Podcasts about gamma ray bursts

This episode of Space Nuts is brought you with the support of Saily. If you love travelling, you need Saily by your side. To find out more and get the special Space Nuts listener discount, visit www.saily.com/spacenutsSpace Nuts Episode 512 Q&A: Cosmic Colors, Gamma Ray Bursts, and Terraforming VenusIn this enlightening episode of Space Nuts, host Heidi Campo takes the helm alongside astronomer Professor Fred Watson to tackle a range of fascinating cosmic queries from our listeners. From the vibrant colors of celestial bodies to the dangers of gamma ray bursts, and the challenges of terraforming Venus, this episode is a treasure trove of astronomical insights that will spark your curiosity about the universe.Episode Highlights:- Cosmic Colors: Heidi and Fred discuss Rusty from Donnybrook's inquiry about the colors of stars, particularly red giants like Pollux and the blue hues of certain stars. They explore how large telescopes enhance our perception of these colors and the subtlety of what we actually see through the eyepiece.- Gamma Ray Bursts Explained: The duo dives into the nature of gamma ray bursts and why their intensity diminishes with distance. Fred explains the inverse square law and clarifies the effects of dust and gas on signal strength, providing a comprehensive understanding of these powerful cosmic events.- Terraforming Venus: A thought-provoking discussion on the feasibility of terraforming Venus reveals the planet's extreme conditions and the challenges posed by its thick atmosphere. Fred shares insights on whether blocking sunlight could reverse the runaway greenhouse effect and the implications of Venus's proximity to the sun.- The Double Slit Experiment: The episode wraps up with a listener's question about the double slit experiment and the puzzling behavior of photons. Fred elaborates on the concept of quantum superposition and entanglement, shedding light on this fundamental experiment that underpins our understanding of light as both a particle and a wave.For more Space Nuts, including our continually updating newsfeed and to listen to all our episodes, visit our website. Follow us on social media at SpaceNutsPod on Facebook, X, YouTube Music Music, Tumblr, Instagram, and TikTok. We love engaging with our community, so be sure to drop us a message or comment on your favorite platform.If you'd like to help support Space Nuts and join our growing family of insiders for commercial-free episodes and more, visit spacenutspodcast.com/aboutStay curious, keep looking up, and join us next time for more stellar insights and cosmic wonders. Until then, clear skies and happy stargazing.(00:00) Heidi Campo welcomes Professor Fred Watson to Space Nuts(00:30) Andrew and Fred have some questions for you about telescopes and color(06:36) Radio waves and gamma rays get weaker the further away they get(09:41) Mike Cupid from the UK has a question about terraforming Venus(11:41) How could you terraform Venus without losing runaway greenhouse effect(16:45) Our very, uh, last question is from Todd. He's from Utah. His question is about spring skiing(17:13) Todd from Utah has a question about the double slit experimentBecome a supporter of this podcast: https://www.spreaker.com/podcast/space-nuts-astronomy-insights-cosmic-discoveries--2631155/support.

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Astronomy ~ Astrophiz 202: Dr Genevieve Schroeder ~ Radio Eyes on Gamma-ray Burst Skies Meet Dr Genevieve Schroeder a fabulous astrophysicist who does exciting research into GRBs … Gamma Ray Bursts. A Gamma Ray Burst is the undisputed brightest-ever radiation coming from the most extreme events in the universe … Specifically, Genevieve hunts down and understands how Gamma-ray Bursts are generated by the most cataclysmic events in our universe

In this episode of SpaceTime, we explore the possibility of Mercury harbouring a thick layer of solid diamond deep below its ancient surface. We also delve into new details about the brightest gamma ray burst of all time and discuss the recent surge in auroral activity as the sun approaches solar maximum. Join us for these fascinating updates and more!For more SpaceTime visit our website at www.spacetimewithstuartgary.comFor more Space News podcasts, visit our HQ at www.bitesz.comBecome a supporter of this podcast: https://www.spreaker.com/podcast/spacetime-with-stuart-gary--2458531/support.

Welcome to Astronomy AstroDailyPod! I'm your host, Steve Dunkley, bringing you the latest cosmic updates for 24 June 2024. Today, we delve into a star on the brink of explosion, a stranded spacecraft, and the ongoing search for Planet Nine. We'll also explore new satellite constellations aiding in firefighting, a joint Chinese-French satellite mission, and a family suing NASA over space debris. Plus, we look at racing drones testing spacecraft control systems. Let's dive in!- **NASA Sued Over Space Junk**: An American family is claiming over $80,000 from NASA after space debris crashed into their Florida home. The debris, part of a cargo pallet from the ISS, caused significant damage but fortunately no injuries. NASA's response could set a precedent for future claims.- **Chinese-French Satellite Mission**: A joint mission between China and France has launched the Space Variable Objects Monitor (SVOM) to study gamma ray bursts, the universe's mightiest explosions. This collaboration aims to unravel mysteries of the cosmos and enhance our understanding of the universe's history.- **Boeing Starliner Delayed Again**: NASA has delayed the return of the Boeing Starliner from the ISS to review thruster malfunctions and helium leaks. The mission, initially set for June 26, will be rescheduled to ensure safety and thorough data analysis.- **Impending Nova Event**: The star T Coronae Borealis, part of a binary system, is set to undergo a nova event visible from Earth. This rare cosmic event offers a unique opportunity for both professional and amateur astronomers to observe and study.- **Racing Drones for Spacecraft Control**: Researchers at Delft University are using racing drones to test neural network-based AI control systems for future space missions. This innovative approach aims to enhance spacecraft autonomy and efficiency in unpredictable space environments.For an astronomical experience, visit our website at [astronomydaily.io](https://www.astronomydaily.io) for the latest news, sign up for our free newsletter, and check out exclusive sponsor deals. Connect with us on YouTube, TikTok, X, and Facebook via @AstroDailyPod for engaging discussions with fellow space aficionados. This is Steve, reminding you to keep your gaze fixed on the heavens. Until our next stellar episode, let the cosmos ignite your curiosity and wonder. Clear skies and cosmic discoveries to all!**Support**:This podcast is better with your support:[https://www.bitesz.com/show/astronomy-daily-the-podcast/support/](https://www.bitesz.com/show/astronomy-daily-the-podcast/support/)[www.bitesz.com](https://www.bitesz.com/)**Sponsors**:[www.bitesz.com/nordpass](https://www.bitesz.com/nordpass)[https://www.bitesz.com/show/astronomy-daily-the-podcast/sponsors/]

WORLD: French-Chinese satellite to look for gamma-ray bursts | June 23, 2024Subscribe to The Manila Times Channel - https://tmt.ph/YTSubscribeVisit our website at https://www.manilatimes.netFollow us:Facebook - https://tmt.ph/facebookInstagram - https://tmt.ph/instagramTwitter - https://tmt.ph/twitterDailyMotion - https://tmt.ph/dailymotionSubscribe to our Digital Edition - https://tmt.ph/digitalCheck out our Podcasts:Spotify - https://tmt.ph/spotifyApple Podcasts - https://tmt.ph/applepodcastsAmazon Music - https://tmt.ph/amazonmusicDeezer: https://tmt.ph/deezerStitcher: https://tmt.ph/stitcherTune In: https://tmt.ph/tuneinSoundcloud: https://tmt.ph/soundcloud#TheManilaTimes Hosted on Acast. See acast.com/privacy for more information.

Gamma-ray bursts are some of the most powerful explosions in the universe. Short gamma ray bursts are caused by the merger of two neutron stars. However, not all short gamma-ray bursts are associated with galaxies. In this podcast, Brendan O'connor, a graduate student at George Washington University, described recent research into the host galaxies of short gamma-ray bursts.    Bios:  - Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.. - Brendan O'connor is a 6th year PhD student in the Department of Physics at The George Washington University working in collaboration with scientists at NASA Goddard Space Flight Center (GSFC) and the University of Maryland, College Park. His research is in the field of time domain and transient astrophysics. In particular, he is interested in the formation and evolution of high energy transients and their progenitors, and uses a variety of optical, infrared, and X-ray observatories to study transient phenomena across the electromagnetic spectrum. ​ Links  NOIRLab Press Release: https://noirlab.edu/public/news/noirlab2218/ University of Maryland Press Release: https://cmns.umd.edu/news-events/features/4958  NOIRLab social media channels can be found at: https://www.facebook.com/NOIRLabAstro https://twitter.com/NOIRLabAstro https://www.instagram.com/noirlabastro/ https://www.youtube.com/noirlabastro   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations.  Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

There are cosmic snipers firing at random into the universe. What are they and what happens if they hit us? Follow the show to join us in this audio experience of Kurzgesagt - In a Nutshell. A fan-made show out of admiration for the works of Kurzgesagt - In a Nutshell. Learn more about your ad choices. Visit megaphone.fm/adchoices

Are the UAP sightings aliens here on Earth? Neil deGrasse Tyson and comedian co-host Paul Mecurio discuss the congressional hearings on unidentified anomalous phenomena (UAP) with astrophysicist and chair of NASA's UAP independent study team, David Spergel.NOTE: StarTalk+ Patrons can listen to this entire episode commercial-free.Thanks to our Patrons Melissa Campbell, Martynas Piliutis, Darrel Mosier, Danielle Martinez, Randall Thompson, and Anton Popov for supporting us this week.Photo Credit: Department of Defense

In this 90th episode of SpaceTime with Stuart Gary's Series 26, we delve into an array of fascinating cosmic discoveries and scientific insights. 1. **Record-Breaking Gamma-Ray Burst:** Astronomers have registered the brightest gamma-ray burst ever observed, rewriting our understanding of these powerful cosmic events. We explore the implications of this groundbreaking discovery and what it can teach us about the extreme phenomena in our universe. 2. **Twin Planets Sharing an Orbit:** In an unprecedented discovery, astronomers may have located a distant star system with two exoplanets cohabitating the same orbit. We investigate this unique configuration and discuss how it challenges current theories of planetary dynamics. 3. **India's Lunar Leap:** India continues its foray into space with the successful launch of another mission to the Moon. We report on the details of this exciting mission and what it signifies for India's growing role in space exploration. 4. **The Science Report:** This episode's Science Report brings us the latest news from diverse fields. - **Sea Birds at Risk:** As marine plastic pollution intensifies, there are increasing concerns about its impact on seabirds. We look at the alarming studies indicating the dangers these birds face from our waste. - **Iberia's Ancient Matriarchy:** New evidence suggests that the ancient Iberians might have been governed by a female ruler, offering intriguing insights into the societal structures of prehistoric times. - **New Dinosaur Species:** Palaeontologists have identified a new species of Iguanodon, a duck-billed dinosaur in Spain, contributing to our understanding of the dinosaur era's biodiversity. - **Skeptic's Corner - Melatonin Dosage:** We delve into the skeptical view of the variability in melatonin doses, discussing its implications for health and wellness. Join us for this episode as we travel from the farthest reaches of the cosmos to the ancient past, unraveling the mysteries of the universe and our place within it. Gamma-Ray Burst, Exoplanets, Lunar Mission, India Space Exploration, Marine Plastic Pollution, Ancient Iberia, New Dinosaur Species, Melatonin Dosage Variability.

For over fifty years, satellites and telescopes have been detecting short bursts of gamma ray bursts. Their origins remained one of the biggest mysteries of science. Now we know that they are from some of the strangest and biggest explosions in the universe. Please join astrophysicist Salman Hameed in discussing the origins of gamma ray bursts in this Urdu/Hindi documentary. For full video: https://youtu.be/iSHVjUp8gh8

What Communes and Other Radical Experiments in Living Together Reveal https://pca.st/qlk4pp2v Ocean temperatures are off the charts, and El Niño is only partly to blame https://phys.org/news/2023-06-ocean-temperatures-el-nio-blame.html Extinction by Gamma-Ray Burst https://youtu.be/8HvwNOSnveE The Sun Isn't Normal. This Telescope Learned the Hard Way. https://youtu.be/3UpSLmuGcNs James Webb Space Telescope discovers 717 ancient galaxies that flooded the universe with ... Read more

Get Exclusive Episode Of Space Infinite Podcast - https://forms.gle/rnpoMif7SRLs39MR8 #65. Gamma Ray Bursts in Hindi What are GRBs? ( Gamma Ray Bursts ), How are they formed? - Learn about it in this episode of the space infinite podcast! Connect on Instagram - @itssmbh - https://www.instagram.com/itssmbh/

SpaceTime Series 26 Episode 43 *The brightest gamma ray burst ever seen Astronomers around the world have been stunned by the brightest gamma ray burst ever seen. *Comprehensive map of all 85,000 volcanoes on Venus A new study has mapped no less than 85 thousand volcanoes on Venus. *Perseverance begins its next science campaign on Mars NASA's Mars Perseverance rover has commenced its new science campaign on the surface of the red planet. *The Science Report Levels of ozone killing chlorofluorocarbon concentrations increasing again despite global bans. New silicon anode platform doubles the performance of existing lithium-ion batteries. Study shows most methods to reduce a person's conspiracy beliefs don't work. Skeptics guide to spontaneous human combustion This week's talent includes: James Leung from the University of Sydney ESA Director of Space Transportation Daniel Neuenschwander And our regular guests: Alex Zaharov-Reutt from iTWire.com Tim Mendham from Australian Skeptics Jonathan Nally the editor of Australian Sky and Telescope Magazine Listen to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen For more SpaceTime and show links: https://linktr.ee/biteszHQ If you love this podcast, please get someone else to listen to. Thank you… To become a SpaceTime supporter and unlock commercial free editions of the show, gain early access and bonus content, please visit https://bitesz.supercast.com/ . Premium version now available via Spotify and Apple Podcasts. For more podcasts visit our HQ at https://bitesz.com Your support is needed... SpaceTime is an independently produced podcast (we are not funded by any government grants, big organisations or companies), and we're working towards becoming a completely listener supported show...meaning we can do away with the commercials and sponsors. We figure the time can be much better spent on researching and producing stories for you, rather than having to chase sponsors to help us pay the bills. That's where you come in....help us reach our first 1,000 subscribers...at that level the show becomes financially viable, and bills can be paid without us breaking into a sweat every month. Every little bit helps...even if you could contribute just $1 per month. It all adds up. By signing up and becoming a supporter at the $5 or more level, you get immediate access to over 350 commercial-free, triple episode editions of SpaceTime plus extended interview bonus content. You also receive all new episodes on a Monday rather than having to wait the week out. Subscribe via Supercast (you get a month's free trial to see if it's really for you or not) ... and share in the rewards. Details at Supercast - https://bitesznetwork.supercast.tech/ Details at https://spacetimewithstuartgary.com or www.bitesz.com#astronomy #space #science #spacetime #news #podcast

Gamma-ray bursts are explosions so powerful they outshine our entire galaxy. Find out how scientists detected the brightest gamma-ray burst ever observed, and what it means for our understanding of the universe. This episode is also available as a blog post: http://daretoknow.ca/2023/04/01/brightest-gamma-ray-burst-ever-unveils-cosmic-mysteries/ --- Send in a voice message: https://podcasters.spotify.com/pod/show/david-morton-rintoul/message

On The Space Show for Wednesday, 29 March 2023: Space Show News: The strongest gamma ray burst ever detected has been reported in the scientific literature. Commentary by Eric Burns (Louisiana State University) and Francis Reddy (Goddard Space Flight Center). Ed Husic, Federal Minister for Industry and Science and minister responsible for the Australian Space Agency: Comment about space industry funding. (excerpt courtesy National Press Club) Bill Nelson, NASA Administrator: Artemis II crew selection announcement and desire for an Australian astronaut. (excerpt courtesy National Press Club). Lunar and Planetary Science Conference | LPSC 2023: Joel Kearns, Deputy Associate Administrator, Exploration Division, NASA HQ, Washington, D.C. on the status of the Artemis and supporting missions lunar science projects. Remembering Yuri Gagarin: Marking the 55th anniversary of the death of the first cosmonaut using archival audio. Ingenuity: The race between the Ingenuity Mars Helicopter and the Mars 2020 Rover Perseverance to the top of an ancient river delta on Mars, and confirmation that two helicopters will be used to retrieve the rock samples collected by Perseverance.

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Identifying the physical origin of gamma-ray bursts with supervised machine learning by Jia-Wei Luo et al. on Wednesday 30 November The empirical classification of gamma-ray bursts (GRBs) into long and short GRBs based on their durations is already firmly established. This empirical classification is generally linked to the physical classification of GRBs originating from compact binary mergers and GRBs originating from massive star collapses, or Type I and II GRBs, with the majority of short GRBs belonging to Type I and the majority of long GRBs belonging to Type II. However, there is a significant overlap in the duration distributions of long and short GRBs. Furthermore, some intermingled GRBs, i.e., short-duration Type II and long-duration Type I GRBs, have been reported. A multi-wavelength, multi-parameter classification scheme of GRBs is evidently needed. In this paper, we seek to build such a classification scheme with supervised machine learning methods, chiefly XGBoost. We utilize the GRB Big Table and Greiner's GRB catalog and divide the input features into three subgroups: prompt emission, afterglow, and host galaxy. We find that the prompt emission subgroup performs the best in distinguishing between Type I and II GRBs. We also find the most important distinguishing feature in prompt emission to be $T_{90}$, hardness ratio, and fluence. After building the machine learning model, we apply it to the currently unclassified GRBs to predict their probabilities of being either GRB class, and we assign the most probable class of each GRB to be its possible physical class. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16451v1

Identifying the physical origin of gamma-ray bursts with supervised machine learning by Jia-Wei Luo et al. on Wednesday 30 November The empirical classification of gamma-ray bursts (GRBs) into long and short GRBs based on their durations is already firmly established. This empirical classification is generally linked to the physical classification of GRBs originating from compact binary mergers and GRBs originating from massive star collapses, or Type I and II GRBs, with the majority of short GRBs belonging to Type I and the majority of long GRBs belonging to Type II. However, there is a significant overlap in the duration distributions of long and short GRBs. Furthermore, some intermingled GRBs, i.e., short-duration Type II and long-duration Type I GRBs, have been reported. A multi-wavelength, multi-parameter classification scheme of GRBs is evidently needed. In this paper, we seek to build such a classification scheme with supervised machine learning methods, chiefly XGBoost. We utilize the GRB Big Table and Greiner's GRB catalog and divide the input features into three subgroups: prompt emission, afterglow, and host galaxy. We find that the prompt emission subgroup performs the best in distinguishing between Type I and II GRBs. We also find the most important distinguishing feature in prompt emission to be $T_{90}$, hardness ratio, and fluence. After building the machine learning model, we apply it to the currently unclassified GRBs to predict their probabilities of being either GRB class, and we assign the most probable class of each GRB to be its possible physical class. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.16451v1

Constraints on the Model of Gamma-ray Bursts and Implications from GRB 221009A: GeV gamma rays v s High-energy Neutrinos by Ruo-Yu Liu et al. on Tuesday 29 November Gamma-ray bursts (GRB) are generally believed to be efficient particle accelerators. In the presence of energetic protons in a GRB jet, interactions between these protons and intense radiation field of the GRB are supposed to induce electromagnetic cascade. Electrons/positrons generated in the cascade will produce an additional spectrum of robust feature, which is in the form of a power-law distribution up to GeV regime with an index of $lesssim 2$. We suggest that measurements of Fermi-LAT at GeV band can provide independent constraints on the key GRB model parameters such as the dissipation radius, the jet's bulk Lorentz factor, and the baryon loading factor. Taking GRB 221009A, the brightest GRB ever detected, as an example, we show that the constraints from GeV gamma-ray emission may be more stringent than that from the neutrino observation, providing us a deep insight into the origin of GRBs. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.14200v1

Constraints on the Model of Gamma-ray Bursts and Implications from GRB 221009A: GeV gamma rays v s High-energy Neutrinos by Ruo-Yu Liu et al. on Monday 28 November Gamma-ray bursts (GRB) are generally believed to be efficient particle accelerators. In the presence of energetic protons in a GRB jet, interactions between these protons and intense radiation field of the GRB are supposed to induce electromagnetic cascade. Electrons/positrons generated in the cascade will produce an additional spectrum of robust feature, which is in the form of a power-law distribution up to GeV regime with an index of $lesssim 2$. We suggest that measurements of Fermi-LAT at GeV band can provide independent constraints on the key GRB model parameters such as the dissipation radius, the jet's bulk Lorentz factor, and the baryon loading factor. Taking GRB 221009A, the brightest GRB ever detected, as an example, we show that the constraints from GeV gamma-ray emission may be more stringent than that from the neutrino observation, providing us a deep insight into the origin of GRBs. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.14200v1

Constraints on the Model of Gamma-ray Bursts and Implications from GRB 221009A: GeV gamma rays v s High-energy Neutrinos by Ruo-Yu Liu et al. on Monday 28 November Gamma-ray bursts (GRB) are generally believed to be efficient particle accelerators. In the presence of energetic protons in a GRB jet, interactions between these protons and intense radiation field of the GRB are supposed to induce electromagnetic cascade. Electrons/positrons generated in the cascade will produce an additional spectrum of robust feature, which is in the form of a power-law distribution up to GeV regime with an index of $lesssim 2$. We suggest that measurements of Fermi-LAT at GeV band can provide independent constraints on the key GRB model parameters such as the dissipation radius, the jet's bulk Lorentz factor, and the baryon loading factor. Taking GRB 221009A, the brightest GRB ever detected, as an example, we show that the constraints from GeV gamma-ray emission may be more stringent than that from the neutrino observation, providing us a deep insight into the origin of GRBs. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.14200v1

Density Profiles of Collapsed Rotating Massive Stars Favor Long Gamma-Ray Bursts by Goni Halevi et al. on Wednesday 23 November Long-duration gamma-ray bursts (lGRBs) originate in relativistic collimated outflows -- jets -- that drill their way out of collapsing massive stars. Accurately modeling this process requires realistic stellar profiles for the jets to propagate through and break out of. Most previous studies have used simple power laws or pre-collapse models for massive stars. However, the relevant stellar profile for lGRB models is in fact that of a star after its core has collapsed to form a compact object. To self-consistently compute such a stellar profile, we use the open-source code GR1D to simulate the core-collapse process for a suite of low-metallicity, rotating, massive stellar progenitors that have undergone chemically homogeneous evolution. Our models span a range of zero-age main sequence (ZAMS) masses: $M_mathrm{ZAMS} = 13, 18, 21, 25, 35, 40$, and $45 M_odot$. All of these models, at the onset of core-collapse, feature steep density profiles, $rho propto r^{-alpha}$ with $alphaapprox 2.5$, which would result in jets that are inconsistent with lGRB observables. We follow the collapse of four out of our seven models until they form BHs and the other three proto-neutron stars (PNSs). We find, across all models, that the density profile outside of the newly-formed BH or PNS is well-represented by a flatter power law with $alpha approx 1.35{-}1.55$. Such flat density profiles are conducive to successful formation and breakout of BH-powered jets and, in fact, required to reproduce observable properties of lGRBs. Future models of lGRBs should be initialized with shallower textit{post-collapse} stellar profiles like those presented here instead of the much steeper pre-collapse profiles that are typically used. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.11781v1

Gravitational Waves from the Propagation of Long Gamma-Ray Burst jets by Gerardo Urrutia et al. on Wednesday 23 November Gamma-ray bursts (GRBs) are produced during the propagation of ultra-relativistic jets. It is challenging to study the jet close to the central source, due to the high opacity of the medium. In this paper, we present numerical simulations of relativistic jets propagating through a massive, stripped envelope star associated to long GRBs, breaking out of the star and accelerating into the circumstellar medium. We compute the gravitational wave (GW) signal resulting from the propagation of the jet through the star and the circumstellar medium. We show that key parameters of the jet propagation can be directly determined by the GW signal. The signal presents a first peak corresponding to the jet duration and a second peak which corresponds to the break-out time for an observer located close to the jet axis (which in turn depends on the stellar size), or to much larger times (corresponding to the end of the acceleration phase) for off-axis observers. We also show that the slope of the GW signal before and around the first peak tracks the jet luminosity history and the structure of the progenitor star. The amplitude of the GW signal is $h_+D sim$ hundreds to several thousands cm. Although this signal, for extragalactic sources, is outside the range of detectability of current GW detectors, it can be detected by future instruments as BBO, DECIGO and ALIA. Our results illustrate that future detections of GW associated to GRB jets may represent a revolution in our understanding of this phenomenon. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2208.00129v2

Constrains on the physics of the prompt emission from a distant and energetic gamma-ray burst GRB 220101A by Alessio Mei et al. on Wednesday 23 November The emission region of $rm gamma$-ray bursts (GRBs) is poorly constrained. The uncertainty on the size of the dissipation site spans over 4 orders of magnitude ($rm 10^{12}-10^{17}$ cm) depending on the unknown energy composition of the GRB jets. The joint multi-band analysis from soft X-rays to high energies (up to $rm sim$ 1 GeV) of one of the most energetic and distant GRB 220101A (z = 4.618) allows us for an accurate distinction between prompt and early afterglow emissions. The enormous amount of energy released by GRB 220101A ($rm E_{iso} approx 3 times10^{54}$ erg) and the spectral cutoff at $rm E_{cutoff} = 85_{-26}^{+16}$ MeV observed in the prompt emission spectrum constrains the parameter space of GRB dissipation site. We put stringent constraints on the prompt emission site, requiring $rm 700

Constrains on the physics of the prompt emission from a distant and energetic gamma-ray burst GRB 220101A by Alessio Mei et al. on Tuesday 22 November The emission region of $rm gamma$-ray bursts (GRBs) is poorly constrained. The uncertainty on the size of the dissipation site spans over 4 orders of magnitude ($rm 10^{12}-10^{17}$ cm) depending on the unknown energy composition of the GRB jets. The joint multi-band analysis from soft X-rays to high energies (up to $rm sim$ 1 GeV) of one of the most energetic and distant GRB 220101A (z = 4.618) allows us for an accurate distinction between prompt and early afterglow emissions. The enormous amount of energy released by GRB 220101A ($rm E_{iso} approx 3 times10^{54}$ erg) and the spectral cutoff at $rm E_{cutoff} = 85_{-26}^{+16}$ MeV observed in the prompt emission spectrum constrains the parameter space of GRB dissipation site. We put stringent constraints on the prompt emission site, requiring $rm 700

Gravitational Waves from the Propagation of Long Gamma-Ray Burst jets by Gerardo Urrutia et al. on Tuesday 22 November Gamma-ray bursts (GRBs) are produced during the propagation of ultra-relativistic jets. It is challenging to study the jet close to the central source, due to the high opacity of the medium. In this paper, we present numerical simulations of relativistic jets propagating through a massive, stripped envelope star associated to long GRBs, breaking out of the star and accelerating into the circumstellar medium. We compute the gravitational wave (GW) signal resulting from the propagation of the jet through the star and the circumstellar medium. We show that key parameters of the jet propagation can be directly determined by the GW signal. The signal presents a first peak corresponding to the jet duration and a second peak which corresponds to the break-out time for an observer located close to the jet axis (which in turn depends on the stellar size), or to much larger times (corresponding to the end of the acceleration phase) for off-axis observers. We also show that the slope of the GW signal before and around the first peak tracks the jet luminosity history and the structure of the progenitor star. The amplitude of the GW signal is $h_+D sim$ hundreds to several thousands cm. Although this signal, for extragalactic sources, is outside the range of detectability of current GW detectors, it can be detected by future instruments as BBO, DECIGO and ALIA. Our results illustrate that future detections of GW associated to GRB jets may represent a revolution in our understanding of this phenomenon. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2208.00129v2

Density Profiles of Collapsed Rotating Massive Stars Favor Long Gamma-Ray Bursts by Goni Halevi et al. on Tuesday 22 November Long-duration gamma-ray bursts (lGRBs) originate in relativistic collimated outflows -- jets -- that drill their way out of collapsing massive stars. Accurately modeling this process requires realistic stellar profiles for the jets to propagate through and break out of. Most previous studies have used simple power laws or pre-collapse models for massive stars. However, the relevant stellar profile for lGRB models is in fact that of a star after its core has collapsed to form a compact object. To self-consistently compute such a stellar profile, we use the open-source code GR1D to simulate the core-collapse process for a suite of low-metallicity, rotating, massive stellar progenitors that have undergone chemically homogeneous evolution. Our models span a range of zero-age main sequence (ZAMS) masses: $M_mathrm{ZAMS} = 13, 18, 21, 25, 35, 40$, and $45 M_odot$. All of these models, at the onset of core-collapse, feature steep density profiles, $rho propto r^{-alpha}$ with $alphaapprox 2.5$, which would result in jets that are inconsistent with lGRB observables. We follow the collapse of four out of our seven models until they form BHs and the other three proto-neutron stars (PNSs). We find, across all models, that the density profile outside of the newly-formed BH or PNS is well-represented by a flatter power law with $alpha approx 1.35{-}1.55$. Such flat density profiles are conducive to successful formation and breakout of BH-powered jets and, in fact, required to reproduce observable properties of lGRBs. Future models of lGRBs should be initialized with shallower textit{post-collapse} stellar profiles like those presented here instead of the much steeper pre-collapse profiles that are typically used. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.11781v1

Gravitational Waves from the Propagation of Long Gamma-Ray Burst jets by Gerardo Urrutia et al. on Tuesday 22 November Gamma-ray bursts (GRBs) are produced during the propagation of ultra-relativistic jets. It is challenging to study the jet close to the central source, due to the high opacity of the medium. In this paper, we present numerical simulations of relativistic jets propagating through a massive, stripped envelope star associated to long GRBs, breaking out of the star and accelerating into the circumstellar medium. We compute the gravitational wave (GW) signal resulting from the propagation of the jet through the star and the circumstellar medium. We show that key parameters of the jet propagation can be directly determined by the GW signal. The signal presents a first peak corresponding to the jet duration and a second peak which corresponds to the break-out time for an observer located close to the jet axis (which in turn depends on the stellar size), or to much larger times (corresponding to the end of the acceleration phase) for off-axis observers. We also show that the slope of the GW signal before and around the first peak tracks the jet luminosity history and the structure of the progenitor star. The amplitude of the GW signal is $h_+D sim$ hundreds to several thousands cm. Although this signal, for extragalactic sources, is outside the range of detectability of current GW detectors, it can be detected by future instruments as BBO, DECIGO and ALIA. Our results illustrate that future detections of GW associated to GRB jets may represent a revolution in our understanding of this phenomenon. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2208.00129v2

Prospects for constraining interacting dark energy models from gravitational wave and gamma ray burst joint observation by Wan-Ting Hou et al. on Monday 21 November With the measurement of the electromagnetic (EM) counterpart, a gravitational wave (GW) event could be treated as a standard siren. As a novel cosmological probe, the standard siren will bring significant implications for cosmology. In this paper, by considering the coincident detections of GW and associated $gamma$ ray burst (GRB), we find that only about 400 GW bright standard sirens from binary neutron star mergers could be detected in a 10-year observation of the Einstein Telescope and the THESEUS satellite mission. Based on this mock sample, we investigate the implications of GW standard sirens on the interaction between dark energy and dark matter. In our analysis, four viable interacting dark energy (IDE) models, with interaction forms $Q=3beta H rho_{mathrm{de}}$ and $Q=3 beta H rho_{mathrm{c}}$, are considered. Compared with the traditional EM observational data such as CMB, BAO, and SN Ia, the combination of both GW and EM observations could effectively break the degeneracies between different cosmological parameters and provide more stringent cosmological fits. We also find that the GW data could play a more important role for determining the interaction in the models with $Q=3 beta H rho_{mathrm{c}}$, compared with the models with $Q=3beta H rho_{mathrm{de}}$. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2211.10087v1

Neutrinos from the Brightest Gamma-Ray Burst? by Kohta Murase et al. on Monday 21 November We discuss implications that can be obtained by searches for neutrinos from the brightest gamma-ray burst, GRB 221009A. We derive constraints on GRB model parameters such as the cosmic-ray loading factor and dissipation radius, taking into account both neutrino spectra and effective areas. The results are strong enough to constrain proton acceleration near the photosphere, and we find that the single burst limits are comparable to those from stacking analysis. Quasithermal neutrinos from subphotospheres and ultrahigh-energy neutrinos from external shocks are not yet constrained. We show that GeV-TeV neutrinos originating from neutron collisions are detectable, and urge dedicated analysis on these neutrinos with DeepCore and IceCube as well as ORCA and KM3NeT. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.15625v2

Gamma Ray bursts are some of the most powerful explosions observed in the cosmos and frequently herald the birth of a new black hole. A recent gamma ray burst, GRB 221009A, appears to be the brightest of all time and was observed very quickly by multiple instruments. In this podcast, Jillian Rastinejad discusses the discovery of this gamma ray burst and the follow up observations with the Gemini International Observatory.    Bios:  - Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.. - Jillian Rastinejad is a PhD student at Northwestern University in Evanston, IL. She utilizes many of the world's largest optical telescopes in her quest to better understand the sources of the Universe's most powerful explosions, gamma-ray bursts. When she's not chasing gamma-ray bursts, Jillian enjoys going for runs on Lake Michigan and exploring Chicago's many neighborhoods.   Links:  https://noirlab.edu/public/news/noirlab2224/ https://www.facebook.com/NOIRLabAstro https://twitter.com/NOIRLabAstro https://www.instagram.com/noirlabastro/ https://www.youtube.com/noirlabastro   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations.  Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

Telescopes around the world are capturing photons from the blast, and researchers anticipate exciting discoveries ahead.

Telescopes around the world are capturing photons from the blast, and researchers anticipate exciting discoveries ahead.

①Chinese astronomers detect record-breaking gamma-ray burst ②China releases 1st global standard for scenario-based autonomous vehicle tests ③More young Chinese willing to be digital nomads: survey ④World Food Day marked with calls to "leave no one behind" ⑤Benzema wins Ballon d'Or, Putellas retains women's trophy ⑥Qatar to host 2023 AFC Asian Cup

The latest way immigration smugglers are trying to recruit more help is by advertising on social media apps such as TikTok, Instagram, and Snapchat.  Posts are promising hundreds or thousands of dollars for a few hours of driving.  The problem is, the recruits often don't know what they are in for until they are close, picking up migrants by the border and driving them inland.  Alicia Caldwell, immigration reporter at the WSJ, joins us for what to know.   Next, scientists have been very excited after detecting what could be one of the most powerful explosions of its kind ever seen in space.  Space telescopes picked up a bright Gamma Ray Burst 2.4 billion light-years away that could have been triggered by a star exploding in a supernova and possibly creating a black hole.  Miriam Kramer, space reporter at Axios, joins us for all the latest space news.   Finally, marijuana use is becoming the new normal for young adults.  As more states continue to legalize cannabis and the stigma surrounding it wears off, more Americans are lighting up.  A big part of the growth is coming from young women as more companies are offering products geared toward them.  This November, 5 more states have marijuana on the ballot.  Daniel de Visé, reporter at The Hill, joins us for more.See omnystudio.com/listener for privacy information.

Astronomy Daily – The PodcastShow NotesS01E40Astronomy Daily – The Podcast is available on Apple Podcasts and Spotify:Apple Podcasts: https://podcasts.apple.com/us/podcast/astronomy-daily-the-podcast/id1642258990 Spotify: https://open.spotify.com/show/2kPF1ABBW2rCrjDlU2CWLW Andrew's taking a short holiday…so for the next little while Astronomy Daily – The Podcast will be hosted by his brother Steve…and Halley of course.So please welcome Steve to the hosting chair with this episode.Thursday October 20, 2022Today's headline stories:Do you dig the moon like I dig the moon? Well, guess who's planning to mine the moon?A group of lucky astronomers caught an ancient Gamma Ray Burst that originated from the early universe... you can't imagine how hard that is to do. They are bright but fade quickly.. and this one travelled a long, long. long way.Why is the Dubai Space Agency building a simulation of the Red Planet? That's like putting a desert from another planet in a desert on Earth, right? Maybe not.These stories and more in this episode…If you'd like to find out more about the stories featured in today's show, you can read today's edition of the Astronomy Daily Newsletter at any of our websites – www.spacenuts.io , www.bitesz.com or go directly to www.astronomydaily.io – subscribe and get the new edition delivered to your mailbox or RSS reader every day….it's free from us to you.Please subscribe to the podcast and if you have a moment, a quick review would be most helpful. Thank you…#space #astronomy #science #podcast #astronomydaily #spacenuts #spacetime

Finding high-redshift gamma-ray bursts in tandem near-infrared and optical surveys by S. Campana et al. on Tuesday 18 October The race for the most distant object in the Universe has been played by long-duration gamma-ray bursts (GRBs), star-forming galaxies and quasars. GRBs took a temporary lead with the discovery of GRB 090423 at a redshift z=8.2, but now the record-holder is the galaxy GN-z11 at z=11.0. Despite this record, galaxies and quasars are very faint (GN-z11 has a magnitude H=26), hampering the study of the physical properties of the primordial Universe. On the other hand, GRB afterglows are brighter by a factor of >100, with the drawback of lasting only for 1-2 days. Here we describe a novel approach to the discovery of high-redshift (z>6) GRBs, exploiting their near-infrared (nIR) emission properties. Soon after the bright, high-energy prompt phase, a GRB is accompanied by an afterglow. The afterglows of high-redshift GRBs are naturally absorbed, like any other source, at optical wavelengths by Hydrogen along the line of sight in the intergalactic medium (Lyman-alpha absorption). We propose to take advantage of the deep monitoring of the sky by the Vera Rubin Observatory, to simultaneously observe exactly the same fields with a new, dedicated nIR facility. By comparing the two streams of transients, one can pinpoint transients detected in the nIR band and not in the optical band. These fast transients detected only in the nIR and with an AB colour index r-H>3.5 are high-redshift GRBs, with a low contamination rate. Thanks to the depth reached by the Rubin observations, interlopers can be identified, allowing us to discover ~11 GRBs at z>6 per year and ~3 GRBs per year at z>10. This turns out to be one of the most effective probes of the high-redshift Universe. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.09749v1

Probing particle acceleration at trans-relativistic shocks with off-axis gamma-ray burst afterglows by Kazuya Takahashi et al. on Tuesday 18 October Particle acceleration is expected to be different between relativistic and non-relativistic collisionless shocks. We show that electromagnetic counterparts to gravitational waves (GWs), gamma-ray burst (GRB) afterglows, are ideal targets for observing trans-relativistic evolution of accelerated electron distribution because the GWs spot nearby GRBs with off-axis jets, otherwise missed in gamma-ray observations. We find that the relativistic spectral slope begins to change steeply near the peak time of the light curve and approaches the non-relativistic limit in about 10 times the peak time. The trans-relativistic evolution of the afterglow synchrotron spectrum is consistent with GRB 170817A observations within errors, and will be measurable in similar but more distant events at a GW horizon $sim 200$ Mpc in a denser environment. We roughly estimate that such events represent a fraction of 10-50 per cent of the GRB 170817A-like off-axis short GRBs. We also find that the spectral evolution does not depend on the jet structure if their light curves are similar to each other. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2208.06274v2

The Astronomy, Technology, and Space Science News Podcast.SpaceTime Series 25 Episode 110*Scientists change an asteroid's orbit.Scientists have altered the orbit of a celestial object for the first time in history.*Huge Gamma Ray Burst detectedAstronomers have just detected a record-breaking Gamma Ray Burst.*TESS spacecraft placed in safe modeNASA's planet-hunting TESS spacecraft has been placed into safe mode after a sudden computer glitch.*Rocket Lab sets a new launch recordRocket Lab has broken its annual launch record carrying out its eighth mission this year.*The Science ReportScientists teach a dish of living human and mouse brain cells to play pong.The first COVID-19 vaccines designed to target Omicron are now being rolled out across Australia.Earth's population will officially reach eight billion people on November 15th, 2022.Skeptics guide to the predictions of the Queen's passing.Listen to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen For more SpaceTime and show links: https://linktr.ee/biteszHQ If you love this podcast, please get someone else to listen to. Thank you…To become a SpaceTime supporter and unlock commercial free editions of the show, gain early access and bonus content, please visit https://bitesz.supercast.com/ . Premium version now available via Spotify and Apple Podcasts.For more podcasts visit our HQ at https://biteszhq.com Your support is needed...SpaceTime is an independently produced podcast (we are not funded by any government grants, big organisations or companies), and we're working towards becoming a completely listener supported show...meaning we can do away with the commercials and sponsors. We figure the time can be much better spent on researching and producing stories for you, rather than having to chase sponsors to help us pay the bills.That's where you come in....help us reach our first 1,000 subscribers...at that level the show becomes financially viable and bills can be paid without us breaking into a sweat every month. Every little bit helps...even if you could contribute just $1 per month. It all adds up.By signing up and becoming a supporter at the $5 or more level, you get immediate access to over 280 commercial-free, double, and triple episode editions of SpaceTime plus extended interview bonus content. You also receive all new episodes on a Monday rather than having to wait the week out. Subscribe via Supercast (you get a month's free trial to see if it's really for you or not) ... and share in the rewards. Details at Supercast - https://bitesznetwork.supercast.tech/ Details at https://spacetimewithstuartgary.com or www.bitesz.com

Search for Quasi-Periodical Oscillations in Precursors of Short and Long Gamma Ray Bursts by Shuo Xiao et al. on Monday 17 October The precursors of short and long Gamma Ray Bursts (SGRBs and LGRBs) can serve as probes of their progenitors, as well as shedding light on the physical processes of mergers or core-collapse supernovae. Some models predict the possible existence of Quasi-Periodically Oscillations (QPO) in the precursors of SGRBs. Although many previous studies have performed QPO search in the main emission of SGRBs and LGRBs, so far there was no systematic QPO search in their precursors. In this work, we perform a detailed QPO search in the precursors of SGRBs and LGRBs detected by Fermi/GBM from 2008 to 2019 using the power density spectrum (PDS) in frequency domain and Gaussian processes (GP) in time domain. We do not find any convinced QPO signal with significance above 3 $sigma$, possibly due to the low fluxes of precursors. Finally, the PDS continuum properties of both the precursors and main emissions are also studied for the first time, and no significant difference is found in the distributions of the PDS slope for precursors and main emissions in both SGRBs and LGRBs. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2210.08491v1

Gamma-ray bursts are some of the most powerful explosions in the universe. Short gamma ray bursts are caused by the merger of two neutron stars. However, not all short gamma-ray bursts are associated with galaxies. In this podcast, Brendan O'connor, a graduate student at George Washington University, described recent research into the host galaxies of short gamma-ray bursts.    Bios:  - Rob Sparks is in the Communications, Education and Engagement group at NSF's NOIRLab in Tucson, Arizona.. - Brendan O'connor is a 6th year PhD student in the Department of Physics at The George Washington University working in collaboration with scientists at NASA Goddard Space Flight Center (GSFC) and the University of Maryland, College Park. His research is in the field of time domain and transient astrophysics. In particular, he is interested in the formation and evolution of high energy transients and their progenitors, and uses a variety of optical, infrared, and X-ray observatories to study transient phenomena across the electromagnetic spectrum.   Links: NOIRLab Press Release:  https://noirlab.edu/public/news/noirlab2218/ University of Maryland Press Release:  https://cmns.umd.edu/news-events/features/4958   https://www.facebook.com/NOIRLabAstro https://twitter.com/NOIRLabAstro https://www.instagram.com/noirlabastro/ https://www.youtube.com/noirlabastro   We've added a new way to donate to 365 Days of Astronomy to support editing, hosting, and production costs.  Just visit: https://www.patreon.com/365DaysOfAstronomy and donate as much as you can! Share the podcast with your friends and send the Patreon link to them too!  Every bit helps! Thank you! ------------------------------------ Do go visit http://www.redbubble.com/people/CosmoQuestX/shop for cool Astronomy Cast and CosmoQuest t-shirts, coffee mugs and other awesomeness! http://cosmoquest.org/Donate This show is made possible through your donations.  Thank you! (Haven't donated? It's not too late! Just click!) ------------------------------------ The 365 Days of Astronomy Podcast is produced by the Planetary Science Institute. http://www.psi.edu Visit us on the web at 365DaysOfAstronomy.org or email us at info@365DaysOfAstronomy.org.

The Astronomy, Technology, and Space Science News Podcast.SpaceTime Series 25 Episode 88*New record for the most distant and earliest galaxy ever seenAstronomers have just set another new record for the most distant and earliest galaxy ever seen – a stellar city dating back to just 250 million years after the Big Bang 13.8 billion years ago.*Earth sets its own new record for the shortest day everIf the Earth seemed to spin a little faster for you on June 29th – it wasn't your imagination or your heart fluttering – it really did spin faster – by about 1.59 milliseconds short of a full 24 hours.*A unique telescope array to study galactic collisionsMacquarie University have unveiled a unique new telescope array designed to search for and study ultra-faint galaxies.*Explosive Gamma Ray Burst captured for first time in millimetre lightScientists using ALMA the Atacama Large Millimetre/submillimeter Array radio telescope have for the first-time recorded millimetre-wavelength light from a Gamma Ray Burst – the fiery explosion caused by the merger of a neutron star with another star.*Another joint Australian and American spy satellite launched from New ZealandRocket Labs have launched another joint Australian and American spy satellite aboard their Electron Rocket.*Dragon capsule debris found in AustraliaDebris from the tail fin of the trunk section of a Space-X Dragon capsule has been found on a sheep pasture in the Australian Snowy mountains.*China launches a new solid fuel rocketChina have undertaken the maiden flight of a new small payload rocket.*The Science ReportHuanan wet markets in Wuhan confirmed as the epicenter for the spread of COVID-19.Almost half of all Australian's have now had COVID.A new strain of Monkey Pox showing new and different symptoms.Scientists say that the salt in ocean-spray might hinder lightning.New Study says there was only one T-Rex species.Alex on Tech upgradeable appliancesSkeptic's guide to scarry ScotlandListen to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen For more SpaceTime and show links: https://linktr.ee/biteszHQ If you love this podcast, please get someone else to listen to. Thank you…To become a SpaceTime supporter and unlock commercial free editions of the show, gain early access and bonus content, please visit https://bitesz.supercast.com/ . Premium version now available via Spotify and Apple Podcasts.For more podcasts visit our HQ at https://biteszhq.com #jwst #jwstupdate #jwstnews #jwstdiscoveries #jameswebbspacetelescope#space #science #astronomy #astrophysics #cosmology#podcast

Brian Schmidt, is an astronomer at the Research School of Astronomy and Astrophysics at the Australian National University, formerly known as Mount Stromlo and Siding Spring Observatories. He works in several areas of astronomy, most notably with exploding stars called supernovae. He also chases Gamma-Ray Bursts, and is heading a project to build a new Telescope that will map the Southern Sky called SkyMapper. Brian was awarded The Nobel Prize in Physics 2011 for the discovery of the accelerating expansion of the Universe through observations of distant supernovae. Please join my mailing list; just click here: http://briankeating.com/mailing_list.php

These high-energy explosions, brighter than billions and billions of suns, have recently been tracked for days, upending ideas about the cataclysms that create them.

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