Podcasts about fermi gamma

The Hoover Institution Program on the US, China, and the World held Critical Issues in the US-China Science and Technology Relationship on Thursday, November 7th, 2024 from 4:00 pm - 5:30 pm PT at the Annenberg Conference Room, George P. Shultz Building.  Both the United States and the People's Republic of China see sustaining leadership in science and technology (S+T) as foundational to national and economic security. Policymakers on both sides of the Pacific have taken action to promote indigenous innovation, and to protect S+T ecosystems from misappropriation of research and malign technology transfer. In the US, some of these steps, including the China Initiative, have led to pain, mistrust, and a climate of fear, particularly for students and scholars of and from China. Newer efforts, including research security programs and policies, seek to learn from these mistakes. A distinguished panel of scientists and China scholars discuss these dynamics and their implications. What are the issues facing US-China science and technology collaboration? What are the current challenges confronting Chinese American scientists? How should we foster scientific ecosystems that are inclusive, resilient to security challenges, and aligned with democratic values?  Featuring Zhenan Bao is the K.K. Lee Professor of Chemical Engineering, and by courtesy, a Professor of Chemistry and a Professor of Material Science and Engineering at Stanford University. Bao directs the Stanford Wearable Electronics Initiate (eWEAR). Prior to joining Stanford in 2004, she was a Distinguished Member of Technical Staff in Bell Labs, Lucent Technologies from 1995-2004. She received her Ph.D. in Chemistry from the University of Chicago in 1995. Bao is a member of the National Academy of Sciences, the National Academy of Engineering, the American Academy of Arts and Sciences and the National Academy of Inventors. She is a foreign member of the Chinese Academy of Science. Bao is known for her work on artificial electronic skin, which is enabling a new-generation of skin-like electronics for regaining sense of touch for neuro prosthetics, human-friendly robots, human-machine interface and seamless health monitoring devices. Bao has been named by Nature Magazine as a “Master of Materials”. She is a recipient of the VinFuture Prize Female Innovator 2022, ACS Chemistry of Materials Award 2022, Gibbs Medal 2020, Wilhelm Exner Medal 2018, L'Oréal-UNESCO For Women in Science Award 2017. Bao co-founded C3 Nano and PyrAmes, which produced materials used in commercial smartphones and FDA-approved blood pressure monitors. Research inventions from her group have also been licensed as foundational technologies for multiple start-ups founded by her students. Yasheng Huang (黄亚生) is the Epoch Foundation Professor of Global Economics and Management at the MIT Sloan School of Management. He also serves as the president of the Asian American Scholar Forum, a non-governmental organization dedicated to promoting open science and protecting the civil rights of Asian American scientists. Professor Huang is a co-author of MIT's comprehensive report on university engagement with China and has recently contributed an insightful article to Nature on the US-China science and technology agreement. For more information, you can read his recent article in Nature here. Peter F. Michelson is the Luke Blossom Professor in the School of Humanities & Sciences and Professor of Physics at Stanford University. He has also served as the Chair of the Physics Department and as Senior Associate Dean for the Natural Sciences. His research career began with studies of superconductivity and followed a path that led to working on gravitational wave detection. For the past 15 years his research has been focused on observations of the Universe with the Fermi Gamma-ray Space Telescope, launched by NASA in 2008. He leads the international collaboration that designed, built, and operates the Large Area Telescope (LAT), the primary instrument on Fermi. The collaboration has grown from having members from 5 nations (U.S., Japan, France, Italy, Sweden) to more than 20 today, including members in the United States, Europe, China, Japan, Thailand, South America, and South Africa. Professor Michelson has received several awards for the development of the Fermi Observatory, including the Bruno Rossi Prize of the American Astronomical Society. He is an elected member of the American Academy of Arts and Sciences and a Fellow of the American Physical Society. He has served on a number of advisory committees, including for NASA and various U.S. National Academy of Sciences Decadal Surveys. In 2020-21, he co-directed an American Academy of Arts and Sciences study, Challenges for International Scientific Partnerships, that identified the benefits of international scientific collaboration and recommended actions to be taken to address the most pressing challenges facing international scientific collaborations. Glenn Tiffert is a distinguished research fellow at the Hoover Institution and a historian of modern China. He co-chairs Hoover's program on the US, China, and the World, and also leads Stanford's participation in the National Science Foundation's SECURE program, a $67 million effort authorized by the CHIPS and Science Act of 2022 to enhance the security and integrity of the US research enterprise. He works extensively on the security and integrity of ecosystems of knowledge, particularly academic, corporate, and government research; science and technology policy; and malign foreign interference.  Moderator Frances Hisgen is the senior research program manager for the program on the US, China, and the World at the Hoover Institution. As key personnel for the National Science Foundation's SECURE program, a joint $67 million effort authorized by the CHIPS and Science Act of 2022, Hisgen focuses on ensuring efforts to enhance the security and integrity of the US research enterprise align with democratic values, promote civil rights, and respect civil liberties. Her AB from Harvard and MPhil from the University of Cambridge are both in Chinese history.  ​

A Zombie star's outburst could soon be appearing in the night skyIn 1946 a stellar explosion brightened the night sky as the result of a zombie star going nova 3,000 light-years away reached Earth. The nova soon dimmed, but scientists are expecting a repeat performance any day now. NASA astrophysicist Elizabeth Hayes, the project scientist of the Fermi Gamma-ray Space Telescope, described it as a white dwarf star devouring so much of its companion star that it reaches a critical threshold resulting in a thermonuclear explosion on its surface. When that happens, they expect we'll be able to see it above the western horizon when it temporarily becomes as bright as any star in the Big Dipper. A tiny dinosaur used wings to run fast, and possibly to fly106 million years ago, in what is now South Korea, a bird-like dinosaur with wings ran across a muddy flat and left behind tiny footprints. By reconstructing its stride from these prints, paleontologists have found that it ran faster than could be explained if it weren't using its wings to push it along. Dr. Hans Larsson of McGill university says this discovery gives new insight into the evolution of flight in dinosaurs. This study was published in the journal PNAS.A climate-change disaster scenario could be closer than we thinkThis week, a group of 44 researchers from 15 countries presented an open letter to the Nordic Council of Ministers, to shed light on the potential collapse of a key ocean current system. The Atlantic meridional overturning circulation, or AMOC, is a network of currents that brings warm water from equatorial regions North, and recirculates cool water South, and recent studies indicate it is slowing down because of climate change. A new study, from a team at the University of Oregon led by Christo Buizert, analyzed ice cores to look at what exactly happened when the AMOC had collapsed last, during the last ice age. Their results suggest that an ice sheet would have spread as far down as the South of France, or New York City, which would devastate ecosystems and plunge Europe into a deep freeze while disrupting rainfall distribution across Asia. The research was published in the journal PNAS.Cloudy with a chance of great whitesA group of researchers in California is using drone footage along with artificial intelligence to develop a shark forecasting system. The team, led by Douglas McCauley from the University of California Santa Barbara, have been flying drones over the waters of Padaro beach in California to get daily shark counts, and compare that to oceanological details to determine what conditions make the water more or less “sharky.” While they spotted up to 15 sharks a day near unsuspecting surfers, this beach has very few interactions between humans and sharks in any given year. The results of the drone study have been published in the journal Marine Ecology Progress Series.This biologist wants to change your mind about scary spidersSpiders. For some they're just a bit creepy. For others they're nightmare fuel. But for a select few, they're one of the most fascinating and intriguing creatures on our planet. Behavioural Ecologist James O'Hanlon is one of those people and he thinks we should trade in our arachnophobia for arachnophilia. He pleads his case in a new book, Eight-Legged Wonders The Surprising Lives of Spiders.

CTA 1 內底有一粒 恬 chih-chih ê 脈動星。超新星殘骸 是 天文學家 tī 1960 年 ê 時陣，tī 無線電波 發現 ê 發射源，了後才知影伊是 大質量恆星 死亡爆炸 ê 階段。毋過科學家無 tī 無線電波波段 揣著 這粒 脈動星。脈動星就是大質量恆星 核心崩塌 留落來 ê 殘骸，是一粒 會自旋 ê 中子星。超新星爆炸拄開始 1 萬年 ê 時陣，星際屑仔雲 tī 光學波段 是 足暗--ê。這張 深空望遠鏡影像 是 tī 仙王座 北爿翕--ê。這个星場有 2 度闊，咱會當 tī 可見光波段 看著 CTA 1 咧脹大 ê 衝擊波前。雖罔講科學家無揣著 無線電波 ê 脈動星，毋過 Fermi Gamma-光 太空望遠鏡 tī 2008 年 量著 CTA 1 ê 脈動輻射，證明講這个 超新星殘骸 內底 確實有一粒 咧 自旋 ê 中子星。這个發射源去予人認為是 一大陣 脈動星 ê 頭一粒。這寡脈動星 tī 無線電波波段 是 恬 chih-chih，毋過 tī 高能 ê gamma 光 量著--ê，是活跳跳。 ——— 這是 NASA Astronomy Picture of the Day ê 台語文 podcast 原文版：https://apod.nasa.gov/ 台文版：https://apod.tw/ 今仔日 ê 文章： https://apod.tw/daily/20240823/ 影像：Thomas Lelu 音樂：P!SCO - 鼎鼎 聲優：阿錕 翻譯：An-Li Tsai (NSYSU) 原文：https://apod.nasa.gov/apod/ap240823.html Powered by Firstory Hosting

先 kā X 光影像 擲一爿，咱這馬來 想像一下，若是用 Gamma 光 來看，你會看著啥物？這張全天圖 是 NASA Fermi Gamma 光 太空望遠鏡 看著 ê 宇宙。Fermi 看著 ê 光，能量是 咱 人類目睭 看著--ê 10 億倍。這張圖 是累積 12 年 Fermi 觀測 ê 結果。無仝色水 代表 gamma 光 發射源 有偌光，較光 ê 發射源，色較淺。橫 tī 中央彼逝，是咱 銀河系 ê 中央盤。出現 tī 銀河盤 頂懸 kah 下底 ê 紅點 kah 黃點，大部份是 遙遠 ê 星系。毋閣 tī 銀河盤 內底--ê，是 tī 咱附近 ê 脈動星。藍色 背景是 遙遠 ê gamma 光 發射源 發出 ê 漫射光。In 傷暗矣，無法度一粒一粒量著。一寡 gamma 光 發射源 猶未去予人認出來，所以這是一个研究主題，因為 無人知影 in 是啥物。 ——— 這是 NASA Astronomy Picture of the Day ê 台語文 podcast 原文版：https://apod.nasa.gov/ 台文版：https://apod.tw/ 今仔日 ê 文章： https://apod.tw/daily/20240821/ 影像：NASA, DOE, Fermi LAT Collaboration 文稿：Barb Mattson (U. Maryland, NASA's GSFC) 音樂：P!SCO - 鼎鼎 聲優：阿錕 翻譯：An-Li Tsai (NSYSU) 原文：https://apod.nasa.gov/apod/ap240821.html Powered by Firstory Hosting

Welcome to Astronomy Daily, your Daily dose of all things space and beyond. I'm your host, Anna, and today we've got some exciting updates lined up for you from SpaceX's Falcon 9 rocket getting the green light to return to space to NASA astronauts stuck at the International Space Station longer than expected, there's a lot to cover. We'll also delve into an intriguing discovery made by NASA's Perseverance rover and an unprecedented finding by the Fermi Gamma-ray Space Telescope. So grab your telescopes and let's get started.- SpaceX's Falcon 9 Cleared for Return: SpaceX's Falcon 9, the world's most used rocket, has been officially cleared to return to space following a rare and surprising mid-flight failure earlier this month. The US Federal Aviation Administration (FAA) has given its approval after ensuring that there were no public safety issues stemming from the anomaly that occurred during the failed launch on July 11. SpaceX has identified the cause of the failure, a liquid oxygen leak that led to excessive cooling and subsequently damaged hardware. This return to flight operations couldn't come at a better time, as SpaceX is set to launch its Crew Dragon astronaut capsule on a Falcon 9 rocket for NASA's next mission to the International Space Station as early as August.- - Extended Stay for NASA Astronauts: NASA astronauts Butch Wilmore and Suni Williams find themselves in an extended stay at the International Space Station thanks to some technical hiccups with Boeing's Starliner capsule. Originally scheduled to return in mid-June, the astronauts have been delayed while engineers work through a series of issues, including thruster failures and helium leaks. Despite earlier setbacks and a history of issues, including a failed uncrewed test in 2019 and more problems in 2022, NASA and Boeing are pressing forward in their collaborative effort to ensure safe and reliable missions.- - Perseverance Rover's Organic Molecule Discovery: NASA's Perseverance rover has made an exciting new discovery on Mars—organic molecules in a rock. This isn't definitive proof of life on Mars, but it's certainly the most compelling evidence found so far. Perseverance drilled into a reddish rock named Cheava Falls, the first piece of Mars it has examined that contains these organic molecules. The presence of iron phosphate molecules in the rims could hint at biological activity, although non-biological processes could also be at play. The best way to confirm the origin of these organic molecules would be to bring the sample back to Earth for more detailed analysis.- - Fermi Gamma-ray Space Telescope's Groundbreaking Discovery: NASA's Fermi Gamma-ray Space Telescope has made a groundbreaking discovery in the cosmos. Last October, a gamma-ray burst now famously dubbed the "BOAT" (Brightest of All Time) astounded astronomers with its unprecedented brightness. A few minutes after the BOAT's initial eruption, Fermi detected an unusual energy peak, marking the first high-confidence emission line ever observed in the 50-year history of studying gamma-ray bursts. This feature suggests unique interactions went on, potentially revealing the chemical elements involved or even specific particle processes like matter and antimatter annihilation.- Don't forget to visit our website at astronomydaily.io to sign up for our free Daily newsletter, catch up on all the latest space and astronomy news, and listen to our previous episodes. Follow us on Facebook, X, YouTubeMusic, and TikTok by searching for AstroDailyPod. See you next time, and keep looking up.- www.bitesz.comBecome a supporter of this podcast: https://www.spreaker.com/podcast/astronomy-daily-the-podcast--5648921/support.

With Dr. Roger Romani (Stanford University):NASA's Fermi Gamma-ray Space Telescope has revealed a violent high-energy universe full of stellar explosions, black hole jets, and pulsing stars.  These cosmic objects are often faint when observed with visible light, but glow bright with gamma rays.   Dr. Romani describes the quest to discover the true nature of the most puzzling of these gamma-ray sources.  Several turn out to be a kind of bizarre star corpse called a 'black widow' pulsar -- where a dead star has a companion that it is slowly destroying.This is a talk from 2014, but it is still relevant today.

The Space News Podcast.SpaceTime Series 26 Episode 145*Solar activity likely to peak next year.A new study claims the Sun will reach the peak of its eleven year solar Cycle next year. The current Solar cycle -- 25 began in December 2019 with a minimum smoothed sunspot number of 1.8.NASA's Fermi Mission nets 300 gamma-ray pulsars … and countingA new catalogue shows that NASA's Fermi Gamma-ray Space Telescope has discovered 294 gamma-ray-emitting pulsars, while another 34 suspects await confirmation. *A day that changed astronomy for everBack on the 17th of August 2017 astronomers were for the first time ever able to measure the violent death spiral of a pair of neutron stars using both conventional electromagnetic telescopes and the relatively new field of gravitational wave laser interferometry. *The Science ReportOzone levels above Antarctica may not be recovering after all. Inhaling air pollution while sitting in traffic associated with an increase in blood pressure.Study claims city dwelling bees tend to have bigger brains than their country cousins.Skeptic's guide to the 2023 Bent Spoon AwardsThis week's guests include:Professor Matthew Bailes from OzGrav the ARC Centre of Excellence for Gravitational Wave DiscoveryMars Odyssey deputy project scientist Laura Kerber from JPL And our regular guests:Alex Zaharov-Reutt from techadvice.lifeTim Mendham from Australian SkepticsJonathan Nally from Sky and Telescope Magazineisten to SpaceTime on your favorite podcast app with our universal listen link: https://spacetimewithstuartgary.com/listen and access show links via https://linktr.ee/biteszHQAdditionally, listeners can support the podcast and gain access to bonus content by becoming a SpaceTime crew member through www.bitesz.supercast.com or through premium versions on Spotify and Apple Podcasts. Details on our website at https://spacetimewithstuartgary.com For more SpaceTime and show links: https://linktr.ee/biteszHQFor more podcasts visit our HQ at https://bitesz.com This show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/2458531/advertisement

Webb's study of the second-brightest gamma-ray burst ever seen reveals tellurium.A team of scientists has used multiple space and ground-based telescopes, including NASA's James Webb Space Telescope, NASA's Fermi Gamma-ray Space Telescope, and NASA's Neil Gehrels Swift Observatory, to observe an exceptionally bright gamma-ray burst, GRB 230307A, and identify the neutron star merger that generated an explosion that created the burst. Webb also helped scientists detect the chemical element tellurium in the explosion's aftermath.Image: Gamma-Ray Burst 230307AThis image from NASA's James Webb Space Telescope NIRCam (Near-Infrared Camera) instrument highlights Gamma-Ray Burst (GRB) 230307A and its associated kilonova, as well as its former home galaxy, among their local environment of other galaxies and foreground stars. The GRB likely was powered by the merger of two neutron stars. The neutron stars were kicked out of their home galaxy and traveled the distance of about 120,000 light-years, approximately the diameter of the Milky Way galaxy, before finally merging several hundred million years later.Image: NASA, ESA, CSA, STScI, A. Levan (Radboud University and University of Warwick).Other elements near tellurium on the periodic table – like iodine, which is needed for much of life on Earth – are also likely to be present among the kilonova's ejected material. A kilonova is an explosion produced by a neutron star merging with either a black hole or with another neutron star.“Just over 150 years since Dmitri Mendeleev wrote down the periodic table of elements, we are now finally in the position to start filling in those last blanks of understanding where everything was made, thanks to Webb,” said Andrew Levan of Radboud University in the Netherlands and the University of Warwick in the UK, lead author of the study.While neutron star mergers have long been theorized as being the ideal “pressure cookers” to create some of the rarer elements substantially heavier than iron, astronomers have previously encountered a few obstacles in obtaining solid evidence.Long Gamma-Ray BurstKilonovae are extremely rare, making it difficult to observe these events. Short gamma-ray bursts (GRBs), traditionally thought to be those that last less than two seconds, can be byproducts of these infrequent merger episodes. (In contrast, long gamma-ray bursts may last several minutes and are usually associated with the explosive death of a massive star.)The case of GRB 230307A is particularly remarkable. First detected by Fermi in March, it is the second brightest GRB observed in over 50 years of observations, about 1,000 times brighter than a typical gamma-ray burst that Fermi observes. It also lasted for 200 seconds, placing it firmly in the category of long duration gamma-ray bursts, despite its different origin.“This burst is way into the long category. It's not near the border. But it seems to be coming from a merging neutron star,” added Eric Burns, a co-author of the paper and member of the Fermi team at Louisiana State University.Opportunity: Telescope CollaborationThe collaboration of many telescopes on the ground and in space allowed scientists to piece together a wealth of information about this event as soon as the burst was first detected. It is an example of how satellites and telescopes work together to witness changes in the universe as they unfold. After the first detection, an intensive series of observations from the ground and from space, including with Swift, swung into action to pinpoint the source on the sky and track how its brightness changed. These observations in the gamma-ray, X-ray, optical, infrared, and radio showed that the optical/infrared counterpart was faint, evolved quickly, and became very red – the hallmarks of a kilonova.“This type of explosion is very rapid, with the material in the explosion also expanding swiftly,” said Om Sharan Salafia, a co-author of the study at the INAF – Brera Astronomical Observatory in Italy. “As the whole cloud expands, the material cools off quickly and the peak of its light becomes visible in infrared, and becomes redder on timescales of days to weeks.”Image: Killanova – Webb vs ModelThis graphic presentation compares the spectral data of GRB 230307A's kilonova as observed by NASA's James Webb Space Telescope and a kilonova model. Both show a distinct peak in the region of the spectrum associated with tellurium, with the area shaded in red. The detection of tellurium, which is rarer than platinum on Earth, marks Webb's first direct look at an individual heavy element from a kilonova.Illustration: NASA, ESA, CSA, Joseph Olmsted (STScI).At later times it would have been impossible to study this kilonova from the ground, but these were the perfect conditions for Webb's NIRCam (Near-Infrared Camera) and NIRSpec (Near-Infrared Spectrograph) instruments to observe this tumultuous environment. The spectrum has broad lines that show the material is ejected at high speeds, but one feature is clear: light emitted by tellurium, an element rarer than platinum on Earth.The highly sensitive infrared capabilities of Webb helped scientists identify the home address of the two neutron stars that created the kilonova: a spiral galaxy about 120,000 light-years away from the site of the merger.Prior to their venture, they were once two normal massive stars that formed a binary system in their home spiral galaxy. Since the duo was gravitationally bound, both stars were launched together on two separate occasions: when one among the pair exploded as a supernova and became a neutron star, and when the other star followed suit.In this case, the neutron stars remained as a binary system despite two explosive jolts and were kicked out of their home galaxy. The pair traveled approximately the equivalent of the Milky Way galaxy's diameter before merging several hundred million years later.Scientists expect to find even more kilonovae in the future due to the increasing opportunities to have space and ground-based telescopes work in complementary ways to study changes in the universe. For example, while Webb can peer deeper into space than ever before, the remarkable field of view of NASA's upcoming Nancy Grace Roman Space Telescope will enable astronomers to scout where and how frequently these explosions occur.“Webb provides a phenomenal boost and may find even heavier elements,” said Ben Gompertz, a co-author of the study at the University of Birmingham in the UK. “As we get more frequent observations, the models will improve and the spectrum may evolve more in time. Webb has certainly opened the door to do a lot more, and its abilities will be completely transformative for our understanding of the universe.”These findings have been published in the journal Nature.The James Webb Space Telescope is the world's premier space science observatory. Webb is solving mysteries in our solar system, looking beyond to distant worlds around other stars, and probing the mysterious structures and origins of our universe and our place in it. Webb is an international program led by NASA with its partners, ESA (European Space Agency) and the Canadian Space Agency.This show is part of the Spreaker Prime Network, if you are interested in advertising on this podcast, contact us at https://www.spreaker.com/show/5953955/advertisement

Le 9 octobre dernier, les télescopes Swift/Burst Alert Telescope (BAT) et Fermi/Gamma-ray Burst Monitor ont tous les deux détecté simultanément un sursaut gamma exceptionnel par l'énergie qu'il a dégagée. Baptisé officiellement GRB 221009A, il a été surnommé le BOAT (Brightest of All Time), le sursaut gamma le plus brillant de tous les temps. Depuis l'annonce de sa détection, de nombreux papiers ont été publiés sur le site de preprints ArXiv, mais il est encore trop tôt pour voir paraître les premiers articles après une revue en bonne et due forme. Enfin... pas tout à fait, car il existe un journal qui publie des très courts articles, et rapidement, il s'appelle Research Notes of the American Astronomical Society, et il vient de publier officiellement le tout premier article revu par les pairs consacré à GRB 221009A...

An updated view and perspectives on high-energy gamma-ray emission from SGR J1935+2154 and its environment by Jaziel G. Coelho et al. on Thursday 13 October SGR J1935+2154 was discovered in 2016 and is currently one of the most burst-active Soft Gamma-ray Repeaters (SGR), having emitted several X-ray bursts in recent years. In one of our previous articles, we investigated the contribution to high-energy and very high-energy gamma-ray emission (VHE, $E > 100$ GeV) due to cosmic-ray acceleration of SNR G57.2+0.8 hosting SGR J1935+2154 using the GALPROP propagation code. However, follow-up observations of SGR 1935+2154 were made for 2 hours on April 28, 2020, using the High Energy Stereoscopic System (H.E.S.S.). The observations coincide with X-ray bursts detected by INTEGRAL and Fermi/Gamma-ray Burst Monitor (GBM). These are the first high-energy gamma-ray observations of an SGR in a flaring state, and upper limits on sustained and transient emission have been derived. Now that new H.E.S.S. observations have been made, it is interesting to update our model with respect to these new upper limits. We extend our previous results to a more general situation using the new version of GALPROP. We obtain a hadronic model that confirms the results discussed by H.E.S.S.. This leads to an optimistic prospect that cosmic ray gamma rays from SGR J1935+2154 can contribute to the overall gamma energy density distribution and in particular to the diffusion gamma rays from the Galactic center. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2204.09734v2

The Fermi Gamma Ray Sky: summary of recent Observations by Giacomo Principe. on Thursday 08 September The Fermi Gamma-ray Space Telescope was launched more than 13 years ago and since then it has dramatically changed our knowledge of the gamma-ray sky. With more than three billions photons from the whole sky, collected in the energy range between 20 MeV and more than 300 GeV, and beyond 6,000 detected sources, LAT observations have been crucial to improving our understanding of particle acceleration and gamma-ray production in astrophysical sources. In this proceeding, I will review recent science highlights from the LAT. I will focus on the recent source catalog release, as well as on the main transient phenomena seen with the LAT with multi-wavelength and multi-messenger connection. arXiv: http://arxiv.org/abs/http://arxiv.org/abs/2209.03652v1

I 2010 annoncerede astronomer fra Fermi Gamma-ray Space Telescope, opdagelsen af to gigantiske bobler med en udstrækning på enorme 25.000 lyår - centreret om kernen i Mælkevejen, men nye opdagelser har været med til at kaste mere lys over dette unikke fænomen, som kun er observeret i vores egen galakse. Morten Remar har mødtes med speciale studerende Klara Karlsmose fra Fysik afdelingen på Århus Univeristet, for at få hjælp til at forstå de mystiske bobler. Foto: Morten Remar

On The Space Show for Wednesday, 15 December 2021: NASA's Imaging X-ray Polarimetry Explorer (IXPE) satellite with Tiffany Russell-Lockhart, a systems engineer at the Marshall Space Flight Center in Huntsville, Alabama A primer on why astronomers need to see the non-visible wavelengths of the electromagnetic spectrum Dr Ellen Stofan, Smithsonian Under Secretary for Science and Research and Dr Thomas Zurbuchen, Associate Administrator at NASA's Science Mission Directorate, discuss XPIE at the Smithsonian's National Air and Space Museum in Washington D.C. The James Webb Space Telescope (JWST): A next-generation infra-red observatory is prepared for launch James Webb Space Telescope by the Chromatics Revealing the universe with the JWST: a feature from the Goddard Space Flight Centre in Greenbelt, Maryland The Operations Control Centre for the Hubble Space Telescope: a feature from the Goddard Space Flight Centre in Greenbelt, Maryland The Chandra X-ray Observatory: Celebrating the 8th and 15th anniversaries of the telescope The Fermi Gamma-ray Space Telescope

My next guest is an astrophysicist who works at NASA's Goddard Space Flight Center. I'm speaking about none other than my friend, Joe Eggen. Aside from being the father of my daughter's best friend, Joe is your friendly neighborhood science guy. He earned his Ph. D. in Astronomy and Physics at Georgia State University where he did his dissertation on "Optical Polarimetry and Gamma-Ray Observations of a Sample of Radio-Loud Narrow Line Seyfert 1 Galaxies." I don't know what that means, and neither do you.Joe and I get into:How stars create new elements through fusionNeutrinos, gamma rays, and gravitational wavesHis gripe with the way people talk about geniusesThe era of multi-messenger astronomyPulsars, Quasars, and Blazars, oh my!And of course, his take on the most recent unexplained arial phenomenon ... the aliens.Learn more about Joe and the work he does with the Fermi Gamma-ray Space Telescope!References:Tabetha Boyajian's TED talk on The Most Mysterious Star in the Universe: https://www.ted.com/talks/tabetha_boyajian_the_most_mysterious_star_in_the_universeThe next total solar eclipse in the Americas comes on April 8, 2024. Totality first touches Mexico, enters the United States at Texas, cuts a diagonal to Maine, and visits the maritime provinces of Canada.

Joining Patrina on the podcast today is her good friend, NASA Aerospace Engineer, Sheila Wall. Among her many accomplishments, Sheila was one of the structural analysts on The Fermi Gamma-ray Space Telescope and the Lunar Orbiter Laser Altimeter instrument, and she was also the lead structural analyst for the Advanced Topographic Laser Altimeter System. Sheila is the lead structural analyst for the L’Ralph instrument for the Lucy mission which will launch this year. Today, she shares her thoughts around STEM and a number of other interesting topics with Patrina and her listeners. Their conversation begins by reviewing how these two great friends met, and then Sheila provides a fascinating account of her journey from childhood to becoming an Aerospace engineer and joining NASA. Along the way, she and Patrina discuss the similarities and differences in their upbringing, Sheila’s enviable demeanor, a typical day for her at NASA, and the inspiration that she received and now offers to others in her role. Sheila also offers some ideas for encouraging more children of color to pursue a STEM career and the challenges involved in this, while highlighting the importance of a positive attitude towards challenges and being champions of one another. The interview concludes with Sheila sharing what brings her joy these days, and her sage advice for aspiring scientists. Educational and inspirational, Sheila’s words here today cement her position as a role model for others in determining their goals in life and persevering regardless of any obstacles that may arise.   Episode Highlights:   Sheila and Patrina’s friendship Sheila’s journey to becoming an Aerospace Engineer for NASA  The similarities and differences in their journeys A typical day for Sheila at NASA Their shared admiration of Dr. Mae Jemison Sheila’s ideas for guiding more children of color into STEM occupations Sheila’s determination toward challenges and achievement The importance of being champions of one another What brings joy to Sheila these days Sheila and Patrina’s nieces Sheila’s advice to young, aspiring scientists Quotes:   “There are not a lot of women of color in this aeronautical engineering space, science, technical engineering, math space.”    “If they can do it, I think I can do it too.”   “If you do not make this degree, in my mind, you will be poor the rest of your life. And that could not happen.”   “I am so impressed with your, like, there is no plan B, this is what we're doing, because I've got goals, I have things that I want and need to accomplish. And this seems like a sure path, so we're going to make it happen.”   “You do carry yourself with an incredible air of confidence. There's no arrogance, there's just a really nice self-assuredness that I've always really liked about you.”    “Everything just worked out really, just seamless, just beautiful. I love my branch - that's the group of people that I work with - I love my boss, which I call my branch head. I'm still in the same branch.”   “In Wright-Patterson, like, I actually had someone that was assigned to train me and they refused.”   “I'm able to tell them if the design is sufficient or not…I create mathematical models so that I can assess the design before it's built.”   “My results have imagined these tests so well where a couple of times I'm shocked myself.”   “It's just excitement over just the years of work and you know, many late nights and all that.”   “No design is perfect the first time.”   “I try to just live my life and make myself present.”   “If I can do it then you can do it too.”   “I liked your point early about moving outside of your bubble and not limiting yourself to your bubble or your community.”   “I have now this expanded horizon and I get to actually choose what my sphere of reality contains based on what I want to decide it contains, not what somebody else imposes on me.”   “Find the study group where you aren't the smartest, you want to learn from some other people.”   “Why would you want to be in a group of people who are actually a drag on you? And I do think that that can be a challenge in the black community in particular, because you know, we get accused of ‘crab in a bucket syndrome’.”   “You have to be your own motivator.”   “Hurt people hurt people.”   “There's so much trauma in our community that sometimes we unknowingly inflict that trauma on one another. And so that, I think, informs my desire to support us in being more conscious, being more intentional, and paying more attention on purpose to how we're showing up, how we're treating ourselves, how we're treating others, and just how we're moving through life so that we're doing it in a way that honors the highest and greatest good in ourselves and others.”   “What brings me pure joy is giving back to my mom.”   “It's a natural human thing to sort of compare ourselves to others, right? And the scale was so much smaller when we didn't have the internet.”   “If we just give ourselves that patience to really take time and learn…because if we give ourselves that time, we will learn eventually.”   “Give yourself great patience. Be patient with yourself. Be patient with others, be patient with your journey and trust that all things are working for your highest and greatest good always and in all ways.”     Links:   Joyfully You Life homepage   Joyfully You Life Instagram   Joyfully You Life Facebook   Joyfully You Life Twitter   Joyfully You Life linktree

I 2010 annoncerede astronomer fra Fermi Gamma-ray Space Telescope, opdagelsen af to gigantiske bobler med en udstrækning på enorme 25.000 lyår - centreret om kernen i Mælkevejen, men nye opdagelser har været med til at kaste mere lys over dette unikke fænomen, som kun er observeret i vores egen galakse. Morten Remar har mødtes med speciale studerende Klara Karlsmose fra Fysik afdelingen på Århus Univeristet, for at få hjælp til at forstå de mystiske bobler. Foto: Morten Remar

Astrophiz 82: Dr Ashley Ruiter - Supernova scientist Today we are speaking with Dr Ashley Ruiter, ARC Future Fellow and senior lecturer in the School of Science at UNSW Canberra, Australia. She specializes in Type Ia supernovae and other transient phenomena from stars, in particular their origin, evolution history, and birth rates. Basically she researches anything that erupts, explodes, or merges, and also make predictions about which of these sources may be seen with gravitational waves using LISA. Dr Ruiter is currently looking for graduates to work under her supervision. Prospective PhDs can find out about this opportunity at TinyUrl-Dot-Com/ashleyastro In ‘What’s Up Doc’ for astrophotographers and observers, Dr Ian ‘Astroblog’ Musgrave tells us what to look out for in the morning and evening skies. In ‘Ian’s Tangent’ he introduces us to a great citizen science project ‘Globe at Night’ which involves us measuring light pollution with our eyes and an app. In the News: .1. Via NASA.gov — NASA’s Fermi Satellite Clocks ‘Cannonball’ Pulsar Speeding Through Space Astronomers found a pulsar hurtling through space at nearly 2.5 million miles an hour — so fast it could travel the distance between Earth and the Moon in just 6 minutes. The discovery was made using NASA’s Fermi Gamma-ray Space Telescope and the National Science Foundation’s Karl G Jansky Very Large Array (VLA). 
.2. Via Nature Letters In a paper titled ‘Massive white-dwarf merger product before final collapse’, Dr Vasilii Gvaramadze and Dr Götz Gräfener report observations of a hot star with a spectrum dominated by emission lines, which is located at the centre of a circular mid-infrared nebula. The widths of the emission lines imply that wind material leaves the star with an outflow velocity of 16,000 kilometres per second (that’s almost six million KPH) .3. The International Centre for Radio Astronomy Research (ICRAR) is appealing to members of the public interested in astronomy to climb onboard one of the biggest scientific projects of the next 10 years, AstroQuest (just google AstroQuest) Volunteers are needed to study images of far-off galaxies and figure out which light is coming from which galaxy as part of the citizen science project. 
.4. Our next episode is from early career researcher Tommy Marshman, who used this podcast to find his astrophysics supervisor for his CAASTRO pulsar research for his Masters degree. So stay tuned into Astrophiz.

Астрономы Ягеллонского университета в Кракове (Польша) обнаружили ритмичные колебания в гамма-излучении блазара Markarian 501 (Mrk 501), который удален от Земли на 456 миллионов световых лет. Точная причина этого явления пока неизвестна. Об этом сообщается в пресс-релизе на Phys.org. Блазары представляют собой активные ядра галактик с релятивистскими струями (джетами), направленными в сторону наблюдателя. Таким образом, они представляют собой разновидность квазаров, все из которых имеют в центре сверхмассивную черную дыру. Markarian 501 относится к лацертидам — мощным источникам электромагнитного излучения, которые испускают радиацию во всех диапазонах спектра. Ученые проанализировали данные, полученные при наблюдении Mrk 501 с помощью орбитальной обсерватории Fermi Gamma-ray Space Telescope в период с августа 2008 года по июнь 2018 года. Они обнаружили отчетливые квазипериодические колебания, повторяющиеся примерно каждые 332 дня. Однако при этом изменения в интенсивности гамма-лучей ослабевали в течение последних лет. Вероятными причинами явления исследователи называют присутствие в блазаре двойной сверхмассивной черной дыры; изменения момента импульса, в результате которых джеты меняют свое направления; прецессию аккреционного диска под воздействием крутящего момента.

A detection of a single neutrino at the 1-square-kilometer IceCube detector in Antarctica may signal the beginning of “neutrino astronomy.” The neutral, almost massless particle left its trail of debris in the ice last September, and its source was picked out of the sky by the Fermi Gamma-ray Space Telescope soon thereafter. Science News Writer Daniel Clery joins host Sarah Crespi to discuss the blazar fingered as the source and how neutrinos from this gigantic matter-gobbling black hole could help astronomers learn more about mysterious high-energy cosmic rays that occasionally shriek toward Earth. Read the research. Sarah also talks with Cornell University's Susan McCouch about her team's work on deep-water rice. Rice can survive flooding by fast internodal growth—basically a quick growth spurt that raises its leaves above water. But this growth only occurs in prolonged, deep flooding. How do these plants know they are submerged and how much to grow? Sarah and Susan discuss the mechanisms involved and where they originated. This week's episode was edited by Podigy. Download a transcript of this episode (PDF) Listen to previous podcasts. [Image: NASA/Goddard Space Flight Center Conceptual Image Lab; Music: Jeffrey Cook]

A detection of a single neutrino at the 1-square-kilometer IceCube detector in Antarctica may signal the beginning of “neutrino astronomy.” The neutral, almost massless particle left its trail of debris in the ice last September, and its source was picked out of the sky by the Fermi Gamma-ray Space Telescope soon thereafter. Science News Writer Daniel Clery joins host Sarah Crespi to discuss the blazar fingered as the source and how neutrinos from this gigantic matter-gobbling black hole could help astronomers learn more about mysterious high-energy cosmic rays that occasionally shriek toward Earth. Read the research. Sarah also talks with Cornell University’s Susan McCouch about her team’s work on deep-water rice. Rice can survive flooding by fast internodal growth—basically a quick growth spurt that raises its leaves above water. But this growth only occurs in prolonged, deep flooding. How do these plants know they are submerged and how much to grow? Sarah and Susan discuss the mechanisms involved and where they originated. This week’s episode was edited by Podigy. Download a transcript of this episode (PDF) Listen to previous podcasts. [Image: NASA/Goddard Space Flight Center Conceptual Image Lab; Music: Jeffrey Cook]

Stream Episodes on demand from www.bitesz.com or www.spacetimewithstuartgary.com (both mobile friendly) *Discovery of the most extreme blazars ever seen NASA's Fermi Gamma-ray Space Telescope has discovered the most distant gamma-ray blazars ever seen. Blazars are powerful jets of particles and energy travelling at close to the speed of light. They’re produced by a supermassive black holes feeding in the centre of a galaxy. *Study reveals substantial evidence of holographic universe A new study has provided what researchers believe is the first observational evidence that the universe could be a vast complex hologram. Physicists investigating irregularities in the cosmic microwave background radiation claim they have found as much evidence supporting a holographic explanation of the universe as there is for the traditional explanation of these irregularities using the theory of cosmic inflation. *Asteroid near miss Astronomers have detected another relatively large asteroid that almost sped past the Earth unnoticed. The space rock designated 2017-AG13 passed the Earth at a distance of less than 200 thousand kilometres -- about half way between the Earth and the Moon. (For more...follow @SpaceNuts podcast from all good podcatcher apps or bitesz.com) *Iran conducts ballistic missile test in violation of UN ban Iran has conducted a ballistic missile test in another violation of United Nations Security Council resolutions. The flight – which occurred on Sunday – was designed to test a new re-entry vehicle warhead fitted to a Khorramshahr ballistic missile. *New generation satellite launches in to orbit Arianespace has launched a Russian Soyuz SZT-B rocket from the European Space Agency’s Kourou spaceport in French Guiana a new type of telecommunications satellite into orbit. The early morning launch lit up the black skies with a golden ribbon of fire as Spain’s Hispasat 36W-1 satellite was lifted into geostationary orbit aboard the soviet era Russian rocket. If you're enjoying SpaceTime, please help out by sharing and telling your friends. The best recommendation I can get is one from you. Thank you... #astronomy #space #science #technology #news #blazars #Iran Learn more about your ad choices. Visit megaphone.fm/adchoices Support this show http://supporter.acast.com/spacetime. See acast.com/privacy for privacy and opt-out information.

After taking some time off to seek listener feedback and consider the future direction of our podcast, Blueshift is back with a new episode to kick off 2009! For our re-launch, we've focused our first episode on another recently launched NASA project - the Fermi Gamma-ray Space Telescope - and the exciting gamma-ray bursts that it observes.