Telescope at the South Pole
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Pre-show: Michael Jordan & Ωδή στους notatop10ers Do ‘blue zones,' supposed havens of longevity, rest on shaky science? Latest findings from the South Pole Telescope bolster our model of the universe James Webb Confirms Hubble's Calculation of Hubble's Constant - Universe Today Quantum Leap: Scientists Reveal the Shape of a Single Photon for the First Time NASA's Voyager 1 Resumes Regular Operations After Communications Pause Uranus Might Have Experienced a Freak Event When Voyager 2 Visited - The New York Times Post-show Welch Labs YT channel Solar System με τον Briax Cox Gaslight (1944) Επικοινωνία email: hello@notatop10.fm Instagram: @notatop10 Threads: @notatop10 Bluesky: @notatop10.fm Web: notatop10.fm (00:00:00) Pre-show: Michael Jordan & Ωδή στους notatop10ers (00:08:38) Μπλε ζώνες (00:32:33) Διαφωνίες στη διαστολή του σύμπαντος (00:41:18) Το “σχήμα” ενός φωτονίου (00:48:43) Voyager I σταθερό (00:53:36) Ουρανός με νέο μάτι (00:57:40) Post-show: Κατανάλωση περιεχομένου
La tertulia semanal en la que repasamos las últimas noticias de la actualidad científica. En el episodio de hoy: Cara A: -Sobre premios ivoox. Enhorabuena a Universo de Misterios y El Abrazo del Oso (5:00) -Primer data release de DESI (12:30) Este episodio continúa en la Cara B. Contertulios: Jose Alberto Rubiño, José Edelstein, Francis Villatoro, Héctor Socas. Imagen de portada realizada con Midjourney. Todos los comentarios vertidos durante la tertulia representan únicamente la opinión de quien los hace... y a veces ni eso
La tertulia semanal en la que repasamos las últimas noticias de la actualidad científica. En el episodio de hoy: Cara B: -Promo AICAD (00:10) -Primer data release de DESI (continuación) (02:00) -SPT-3G (30:30) -Evento de disrupción de marea por AT2021hdr (55:30) -Sobre la estabilidad de cuerdas negras en más dimensiones y cómo la teoría de cuerdas podría resolver la aparición de singularidades desnudas (1:10:30) -Señales de los oyentes (1:35:30) Este episodio es continuación de la Cara A. Contertulios: Jose Alberto Rubiño, Gastón Giribet, Francis Villatoro, Héctor Socas. Imagen de portada realizada con Midjourney. Todos los comentarios vertidos durante la tertulia representan únicamente la opinión de quien los hace... y a veces ni eso
The south pole is high, dry, and cold. It sits about two miles high, and it gets only two or three inches of snow per year. The humidity is near zero, and the average temperature is more than 50 below. That makes it a tough place to live — but a great spot for studying the universe. Telescopes work best under high, dry skies, where there's little air or water vapor to interfere with the view. In fact, two major observatories operate at the south pole all year long. One of them looks up into the sky, while the other looks down through the solid Earth. The South Pole Telescope watches the universe at radio wavelengths. Among other projects, it's looking for evidence of dark energy. Dark energy appears to account for most of the “stuff” that makes up the universe. So far, though, scientists can't explain it. An observatory known as IceCube looks for evidence of neutrinos — particles that almost never interact with other forms of matter. They're of interest because they're produced by exploding stars and other powerful events. IceCube consists of thousands of light detectors buried a mile deep in the ice. When a neutrino strikes a particle of other matter, it produces a flash of light. Neutrinos pass all the way through Earth, so IceCube uses the planet to screen out other signals. Several scientists and engineers spend the long, dark winter at the pole to help keep these special “eyes” focused on the universe. Script by Damond Benningfield Support McDonald Observatory
Strategic Plan for U.S. Particle Physics in the Global Context, Dark Energy Survey, Cosmological Constraints from Galaxy Clustering and Weak Lensing Prof. Scott Dodelson is a professor of Physics at Carnegie Melon University. He serves as co-chair of the Science Committee for the Dark Energy Survey and is actively involved in the LSST Dark Energy Science Collaboration, and work with data from the South Pole Telescope. --- Send in a voice message: https://anchor.fm/scientificsense/message Support this podcast: https://anchor.fm/scientificsense/support
Open Science Grid, Distributed Computing, Midscale collaborations, South Pole Telescope, ENZO: Adaptive mesh code for Astrophysics, Hydrodynamic simulations, and Fraud Detection. Dr. Pascal Paschos is a computational scientist at the University of Chicago and an instructor of Mathematics and Computer Science at Chicago State University. Previously he was in academic research at UC California San Diego on Computational cosmology, he moved to Chicago where he worked in High-Performance Computing at Northwestern University. Later, he joined the Maniac Lab at the University of Chicago where he is involved in accelerating computational research using advanced cyberinfrastructure for several international high energy physics experiments and serves as the Open Science Grid area coordinator for midscale collaborations. --- Send in a voice message: https://anchor.fm/scientificsense/message Support this podcast: https://anchor.fm/scientificsense/support
This week I talk about how the South Pole Telescope helped image a black hole and talk about plane troubles here on the ice.No questions this week.If you want your questions answered on the show contact me at one of these links.TwitterFacebookYouTube Website—
2017-01-24 Special EnglishThis is Special English. I&`&m Ryan Price in Beijing. Here is the news.Chinese scientists are working to set up the world&`&s highest altitude gravitational wave telescopes in Tibet. The move aims to detect the faintest echoes resonating from the universe, which may reveal more about the Big Bang.Construction has begun for the first telescope, code-named Ngari No.1, in Ngari Prefecture. The telescope, located 5,300 meters above sea level, will detect and gather precise data on gravitational waves in the Northern Hemisphere. It is expected to be operational by 2021.The following phase will involve a series of telescopes, code-named Ngari No. 2, to be placed at 6,000 meters above sea level.The budget for the whole project is estimated at 130 million yuan, roughly 19 million U.S. Dollars.Ngari is known for its clear skies and minimal human activity, thanks to its high altitude. The prefecture is one of the world&`&s best spots to detect tiny twists in cosmic light.The Ngari observatory will be among the world&`&s top primordial gravitational wave observation bases, alongside the South Pole Telescope and the facility in Chile&`&s Atacama Desert.Gravitational waves were first proposed by Albert Einstein&`&s theory of general relativity 100 years ago. But it wasn&`&t until last year that scientists announced proof of the waves&`& existence, spurring fresh research interest around the globe.China has announced its own gravitational wave research plans, which include the launch of satellites and setting up FAST, a 500-meter aperture spherical radio telescope in southwest China.This is Special English.U.S. president Barack Obama&`&s tweet following his farewell address to the nation has become the most popular post on the presidential account.Obama tweeted from the POTUS account, saying "Thank you for everything. My last ask is the same as my first. I&`&m asking you to believe-not in my ability to create change, but in yours."As of midday, the message had been retweeted more than 500,000 times. Twitter spokesman Nick Pacilio says it outperforms his previous top tweet, a message posted after the Supreme Court&`&s June 2015 decision to overturn state bans on gay marriage.The POTUS account has more than 13 million followers. Obama&`&s personal BarackObama account has more than 80 million followers.You&`&re listening to Special English. I&`&m Ryan Price in Beijing. Norway has begun shutting down analog radio technology, making it the first country in the world to phase out the FM signal for national and some regional broadcasting.The FM signal was switched off in January in one of its districts in favor of Digital Audio Broadcasting, or DAB.The switchover was performed by a radio listener who moved a lever to drum rolls and a countdown from the audience at a public library in northern Norway. The listener said she had been listening to FM radio for more than 70 years.Norway gradually switches to digital, and the shutdown process is due to be completed by Dec. 13.The Norwegian government has cited its landscape with deep fjords, high mountains and scattered communities for making it expensive to operate FM networks. Norway&`&s Parliament made the decision in May 2011.It will save the country an estimated 200 million kroner, roughly 23 million U.S. dollars.This is Special English.The annual Consumer Electronics Show has been held in Las Vegas in the United States. The show is one of the largest of its kind in the world. The event has been brimming with Chinese faces, who present to the world the increasingly dazzling Chinese creations. It attracted almost 4,000 companies worldwide, with some 1,300 from China. Chinese tech giants including Huawei and Lenovo have displayed their stunning innovative products. Huawei is known as one of the top global IT solution providers. It brought to the show its latest flagship products and its Future Mobile Plan, an integration of up-to-date technology.Chinese mobile giant ZTE released its crowd sourced Hawkeye phone. The phone enables users to become developers and designers of their own smart phone. The product is expected to become available globally in July or August.Computer giant Lenovo is a regular participant of the show. It made its presence this time with cutting-edge technology products. The ThinkPad series remains on the front burner of Lenovo&`&s research and development landscape, aiming a new high of its brand fame.You&`&re listening to Special English. I&`&m Ryan Price in Beijing. A total of 720 people were detained and more than 6,000 others were held accountable in China for environment-related wrongdoing last year.According to a national environment work conference, the cases have been discovered through public tip-offs and random checks.The central government had carried out inspections of several provinces and municipalities including Beijing and Shanghai. Inspectors looked into 33,000 cases and imposed fines totaling 440 million yuan, roughly 64 million U.S. dollars.Last year, the government refused a dozen of high-pollution and high-energy consuming projects, involving a total investment of 97 billion yuan. And 4 million high-emission vehicles were taken off the roads.The conference says that partly due to these efforts, Chinese cities reported less PM2.5 pollution from last year. The average density of PM2.5 in 300 cities fell by 6 percent. The number of days with good air quality increased by 2 percent compared with a year ago.This is Special English.Chinese internet giant Baidu has announced a strategic partnership with automobile manufacturer BAIC Motor Corporation to expand the smart vehicle sector. Baidu&`&s autonomous driving research and development arm, Baidu Intelligent Vehicle, will work on two key projects, in cooperation with BAIC Motor, which is based in Beijing. The two sides have agreed to launch a car model driven by Baidu&`&s telematics solutions in the first half of this year and road test self-driving cars by the end of this year. Baidu says intelligent vehicle technology is an increasingly important area for the company, and BAIC Motor is one of the most active automobile manufacturers worldwide in promoting smart software. The two companies will also cooperate on high level autonomous driving technology including high definition maps.A research lab will be launched to promote technological collaboration and the mass application of intelligent vehicle technology. You&`&re listening to Special English. I&`&m Ryan Price in Beijing. You can access the program by logging on to newsplusradio.cn. You can also find us on our Apple Podcast. If you have any comments or suggestions, please let us know by e-mailing us at mansuyingyu@cri.com.cn. That&`&s mansuyingyu@cri.com.cn. Now the news continues.Two Chinese scientists, physicist Zhao Zhongxian and Nobel laureate Tu Youyou, have won China&`&s top science award for their outstanding contributions to scientific and technological innovation.President Xi Jinping presented the award certificates to the scientists and offered congratulations at an annual ceremony held to honor distinguished scientists and research achievements.Physicist Zhao Zhongxian is a leading researcher in superconductivity, while Tu Youyou won the 2015 Nobel Prize in Physiology or Medicine for her discovery of artemisinin as a treatment for malaria.This is Special English.The average PM2.5 density in Shanghai was 45 micrograms per cubic meter last year, down 15 percent from a year earlier.According to the local environment department, the average density of sulfur dioxide, PM10 and nitrogen dioxide last year reported a year-on-year decrease by around 10 percent each.The number of days with air quality rated "good" or "excellent" accounted for 75 percent of the year in Shanghai last year, 5 percentage points higher than a year earlier.PM2.5 was found to be the primary pollutant in Shanghai, accounting for almost half of the pollutants monitored during days with air quality rated "polluted".In order to improve air quality, Shanghai upgraded nine coal-fired units to reduce emissions and removed 53,000 highly-polluting vehicles during the year. You&`&re listening to Special English. I&`&m Ryan Price in Beijing. American engineers have built a small robot with the highest vertical jumping agility ever recorded. The robot has been developed by engineers from the University of California in Berkeley. The robot is known as Salto, and is capable of leaping into the air and springing off a wall, or performing multiple vertical jumps in a row.Salto weighs 100 grams, and is 26 centimeters tall when fully extended. It can jump as far as up to one meter. For the wall jump, Salto attained an average height gain of almost 4 feet, or 1.2 meters.Salto&`&s vertical jumping agility is 1.7 meters per second, which is better than a bullfrog but falls behind the galago.Salto&`&s design is based on the galago&`&s power modulation, which is an adaptation found in natural systems. The power modulation has been designed into some robotic systems to increase the peak power available for jumping.The galagos jump so well because their tendons are loaded with energy by its muscles when it is crouched into position. Adapting the process to Salto enabled its ability to jump, including wall jumps. This is Special English.A new type of tag, known as "Advanced Dive Behavior", can record data every second for weeks at a time to provide a view of whale behavior, biology and their trips deep beneath the sea, over thousands of kilometers, as well as their interaction with the prey.Researchers with Oregon State University in the United States outlined continued evolution and improvements made in the technology from 2007 to 2015, in which it was used on sperm whales, as well as blue and fin whales.Data collected by the tag showed that sperm whales diving all the way to the sea floor, more than 1,000 meters deep, being submerged for up to 75 minutes, while baleen whales lunge after their food.By using the technology, scientists have seen the full range of behavior that is specific to each of the three whale species. The tag shows what whales do while they are underwater, when and where they feed, how they might be affected by passing ships or other noises, as well as what types of water temperatures they prefer.You&`&re listening to Special English. I&`&m Ryan Price in Beijing. The renovation of 19 iron cannons has begun in Tianjin, a neighboring city of Beijing.The cannons were built in 1816 in the eastern part of the city. The renovation is scheduled to take a year, at the Dagukou Fort Ruins Museum. The famous Dagukou was an important battlefield during the Second Opium War 160 years ago.The museum says the cannons will be thoroughly cleaned to remove all rust, and sealed to prevent further corrosion. The project will set the standard for the renovation of iron antiques in China.The Second Opium War took place between China and its rival, Britain and France. The war ended with the Anglo-French forces defeating the local army in Tianjin and approached Beijing, where the imperial family fled Beijing. This is Special English.The number of lawyers operating in China has surpassed 300,000, growing at an annual average of almost 10 percent in recent years. The information was released by the All China Lawyers Association.More than 3 million lawsuits were handled every year on average, in addition to almost 1 million non-litigation cases. Lawyers also handle half a million legal assistance cases each year.The number of law firms is also expanding. There are more than 25,000 law firms operating across the country, maintaining an average annual growth rate of 7 percent.This is the end of this edition of Special English. (全文见周日微信。)
In this episode, Christopher Schmitt talks with Dr. Christine Corbett. Dr. Corbett works on the South Pole Telescope on-site at the South Pole in Antarctica for January-November 2016 with the University of Chicago.
In this episode, Christopher Schmitt talks with Dr. Christine Corbett. Dr. Corbett works on the South Pole Telescope on-site at the South Pole in Antarctica for January-November 2016 with the University of Chicago.
In this episode, Christopher Schmitt talks with Dr. Christine Corbett. Dr. Corbett works on the South Pole Telescope on-site at the South Pole in Antarctica for January-November 2016 with the University of Chicago.
D'ici deux ans, le réseau de quatre radiotélescopes nommé le Event Horizon Telescope, qui a déjà révélé de nouvelles données sur Sgr A, le trou noir central de notre galaxie, ainsi que sur celui, bien plus monstrueux, de la galaxie M87, augmentera énormément ses capacités d'observation. Une trentaine de radiotélescopes du réseau ALMA au Chili ainsi que le radiotélescope de 10 m du Pôle Sud (le bien nommé South Pole Telescope) rejoindront en 2015 le réseau de l'Event Horizon. L'ajout de ces unités permettra d'améliorer par un facteur deux la résolution accessible, en créant un radiotélescope virtuel de la taille de la Terre. Sheperd Doeleman du MIT, coordinateur du projet, précise que le radiotélescope ainsi constitué pourra faire des observations totalement inédites de Sgr A et de son disque d'accrétion.
Fakultät für Physik - Digitale Hochschulschriften der LMU - Teil 05/05
This thesis presents a study of the galaxy populations in massive galaxy clusters that have been selected via the Sunyaev - Zeldovich Effect from the South Pole Telescope. The clusters have multiband optical imaging data from the Dark Energy Survey (DES). Each cluster has a robust mass estimate and with the deep DES data they cover a redshift range between 0 and 1.1. This makes it an ideal cluster sample to study evolutionary trends of the galaxy populations with mass and redshift.
Fakultät für Physik - Digitale Hochschulschriften der LMU - Teil 05/05
Der Ursprung und die Entwicklung unseres Universums zeigt sich gleichermaßen in der Raumzeit selbst wie in den Strukturen, die in ihr entstehen. Galaxienhaufen sind das Ergebnis hierarchischer Strukturbildung. Sie sind die massivsten Objekte, die sich im heutigen Universum bilden konnten. Aufgrund dieser Eigenschaft ist ihre Anzahl und Struktur hochgradig abhängig von der Zusammensetzung und Evolution des Universums. Die Messung der Anzahldichte von Galaxienhaufen beruht auf Katalogen, die nach einer beobachtbaren Größe ausgewählt werden. Die Anwendung einer Massen-Observablen-Relation (MOR) erlaubt es, die beobachtete Anzahl als Funktion der Observablen und der Rotverschiebung mit Vorhersagen zu vergleichen und so kosmologische Parameter zu bestimmen. Man kann jedoch zu Recht behaupten, dass diese Messungen noch nicht präzise im Prozentbereich sind. Hauptgrund hierfür ist das unvollständige Verständnis der MOR. Ihre Normalisierung, die Skalierung der Observablen mit Masse und Rotverschiebung und die Größe und Korrelation von intrinsischen Streuungen muss bekannt sein, um Anzahldichten korrekt interpretieren zu können. Die Massenbestimmung von Galaxienhaufen durch die differenzielle Lichtablenkung in ihrem Gravitationsfeld, i.e. durch den so genannten schwachen Gravitationslinseneffekt (weak lensing), kann erheblich hierzu beitragen. In dieser Arbeit werden neue Methoden und Ergebnisse solcher Untersuchungen vorgestellt. Zu ersteren gehören, als Teil der Datenaufbereitung, (i) die Korrektur von CCD-Bildern für nichtlineare Effekte durch die elektrischen Felder der angesammelten Ladungen (Kapitel 2) und (ii) eine Methode zur Maskierung von Artefakten in überlappenden Aufnahmen eines Himmelsbereichs durch Vergleich mit dem Median-Bild (Kapitel 3). Schließlich ist (iii) eine Methode zur Selektion von Hintergrundgalaxien, basierend auf deren Farbe und scheinbarer Magnitude, die eine neue Korrektur für die Kontamination durch Mitglieder des Galaxienhaufens einschließt, im Abschnitt 5.3.1 beschrieben. Die wissenschaftlichen Hauptergebnisse sind die folgenden. (i) Für den Hubble Frontier Field-Haufen RXC J2248.7-4431 bestimmen wir Masse und Konzentration mittels weak lensing und bestätigen die durch Röntgen- und Sunyaev-Zel'dovich-Beobachtungen (SZ) vorhergesagte große Masse. Die Untersuchung von Haufengalaxien zeigt die Abhängigkeit von Morphologie und Leuchtkraft sowie Umgebung (Kapitel 4). (ii) Unsere Massenbestimmung für 12 Galaxienhaufen ist konsistent mit Röntgenmassen, die unter Annahme hydrostatischen Gleichgewichts des heißen Gases gemacht wurden. Wir bestätigen die MOR, die für die Signifikanz der Detektion mit dem South Pole Telescope bestimmt wurde. Wir finden jedoch Diskrepanzen zur Planck-SZ MOR. Unsere Vermutung ist, dass diese mit einer flacheren Steigung der MOR oder einem größen-, rotverschiebungs- oder rauschabhängigen Problem in der Signalextraktion zusammenhängt (Kapitel 5). (iii) Schließlich zeigen wir, durch die Verbindung von Simulationen und theoretischer Modellierung, dass die Variation von Dichteprofilen bei fester Masse signifikant zur Ungenauigkeit von Massenbestimmungen von Galaxienhaufen mittels weak lensing beiträgt. Ein Modell für diese Variationen, wie das hier entwickelte, ist daher wichtig für die genaue Bestimmung der MOR, wie sie für kommende Untersuchungen nötig sein wird (Kapitel 6).
Fakultät für Physik - Digitale Hochschulschriften der LMU - Teil 05/05
Galaxy clusters, the massive systems host hundreds of galaxies, are invaluable cosmological probes and astrophysical laboratories. Besides these fascinating galaxies, the concentration of dark matter creates a deep gravitational potential well, where even light passing by is bended and the background image is distorted. The baryonic gas falling into the potential well is heated up to more than 10^7 K that free electrons start to emitting in X-ray. Observing those phenomena leads to a throughout understanding of gravity, particle physics and hydrodynamics. In addition, residing on the top of the density perturbations, clusters are sensitive to the initial condition of the Universe, such that they are complimentary tools for cosmology studies. In this thesis we first introduce the basic framework of the Universe and supporting observational evidence. Following that, we sketch the principle to use clusters for cosmology study via their redshift and mass distribution. However cluster mass is not a direct observable, so we need to estimate it by other channels. We briefly exhibit cluster observations in optical, X-ray and microwave bands and discuss the challenges in estimating the underlying cluster mass with them. After this introduction, we present our results on three aspects of the cluster cosmology study. First, we present a study of Planck Sunyaev-Zel’dovich effect (SZE) selected galaxy cluster candidates using Panoramic Survey Telescope & Rapid Response System (Pan-STARRS) imaging data. To fulfil the strength of SZE survey, the redshifts of clusters are required. In this work we examine 237 Planck cluster candidates that have no redshift in the Planck source catalogue. Among them, we confirmed 60 galaxy clusters and measure their redshifts. For the remaining sample, 83 candidates are so heavily contaminated by stars due to their location near the Galactic plane that we do not identify galaxy members and assign reliable redshifts. For the rest 94 candidates we find no optical counterparts. By examining with 150 Planck confirmed clusters with spectroscopy redshifts, our redshift estimations have an accuracy of σ_{z/(1+z)}~0.022. Scaling for the already published Planck sample, we expect the majority of the unconfirmed candidates to be noise fluctuations, except a few at high redshift that the Pan-STARRS1 (PS1) data are not sufficiently deep for confirmation. Thus we use the depth of the optical imaging for each candidate together with a model of the expected galaxy population for a massive cluster to estimate a redshift lower limit, beyond which we would not have expected to detect the optical counterpart. Second, we use 95GHz, 150GHz, and 220GHz observations from South Pole Telescope (SPT) to study the SZE signatures of a sample of 46 X-ray selected groups and clusters drawn from ~6 deg^2 of the XMM-Newton Blanco Cosmology Survey (XMM-BCS). The wide redshift range and low masses make this analysis complementary to previous studies. We develop an analysis tool that using X-ray luminosity as a mass proxy to extract selection-bias corrected constraints on the SZE significance- and Y_{SZ}-mass relations. The SZE significance- mass relation is in good agreement with an extrapolation of the relation obtained from high mass clusters. However, the fit to the Y_{SZ}-mass relation at low masses, while in agreement with the extrapolation from high mass SPT sample, is in tension at 2.8σ with the constraints from the Planck sample. We examine the tension with the Planck relation, discussing sample differences and biases that could contribute. We also analyse the radio galaxy point source population in this ensemble of X-ray selected systems. We find 18 of our systems have 1 GHz Sydney University Molonglo Sky Survey (SUMSS) sources within 2 arcmin of the X-ray centre, and three of these are also detected at significance >4 by SPT. Among these three, two are associated with the brightest cluster galaxies, and the third is a likely unassociated quasar candidate. We examined the impact of these point sources on our SZE scaling relation result and find no evidence of biases. We also examined the impact of dusty galaxies. By stacking the 220 GHz data, we found 2.8σ significant evidence of flux excess, which would correspond to an average underestimate of the SZE signal that is (17±9) % in this sample of low mass systems. Finally we predict a factor of four to five improvements on these SZE mass-observable relation constraints based on future data from SPTpol and XMM-XXL. In the end we present a study using clusters as tools to probe deviations from adiabatic evolution of the Cosmic Microwave Background (CMB) temperature. The expected adiabatic evolution is a key prediction of standard cosmology. We measure the deviation of the form T(z)=T_0(1+z)^{1-α} using measurements of the spectrum of the SZE with SPT. We present a method using the ratio of the SZE signal measured at 95 and 150 GHz in the SPT data to constrain the temperature of the CMB. We validate that this approach provides unbiased results using mock observations of cluster from a new set of hydrodynamical simulations. Applying this method to a sample of 158 SPT-selected clusters, we measure α=0.017^{+0.030}_{−0.028} consistent with the standard model prediction of α=0. Combining with other published results, we find α=0.005±0.012, an improvement of ~ 10% over published constraints. This measurement also provides a strong constraint on the effective equation of state, w_{eff}=−0.994±0.010, which is presented in models of decaying dark energy.
The study of the origin, evolution and make-up of the universe has made dramatic and surprising advances over the last decades John E. Carlstrom, Professor at the University of Chicago and the deputy director of the UCSB Kavli Institute for Cosmological Physics, describes new measurements being carried out with the 10-m South Pole Telescope to test the inflation theory of the origin of the Universe and to investigate the nature of dark energy. Series: "Scientific Horizons" [Science] [Show ID: 24126]
The study of the origin, evolution and make-up of the universe has made dramatic and surprising advances over the last decades John E. Carlstrom, Professor at the University of Chicago and the deputy director of the UCSB Kavli Institute for Cosmological Physics, describes new measurements being carried out with the 10-m South Pole Telescope to test the inflation theory of the origin of the Universe and to investigate the nature of dark energy. Series: "Scientific Horizons" [Science] [Show ID: 24126]
The icy South Pole desert is a harsh and desolate landscape in which few life-forms can flourish. But the extreme cold and isolation are perfect for astronomical observations. Taking advantage of the severe conditions, scientists are using the new South Pole Telescope—the largest ever deployed in Antarctica—to observe the oldest light in the Universe, the cosmic microwave background (CMB).