Now, another Northwestern team offers a potential explanation for what generated the unprecedented and incredibly luminous burst of light.
After developing the first numerical simulation that follows the jet evolution in a black hole — neutron star merger out to large distances, the astrophysicists discovered that the post-merger black hole can launch jets of material from the swallowed neutron star.
Sign up for the mailing list to get episode notifications and hear special announcements! https://mailchi.mp/1a6eb8f2717d/space… we detected the very first gravitational wave, a new window was opened to the mysteries of the universe. We knew we’d see things previously thought impossible. And we just did — an object on the boundary between neutron stars and black holes, which promises to reveal the secrets of both. Hosted by Matt O’Dowd Written by Matt O’Dowd Graphics by Leonardo Scholzer, Yago Ballarini, & Pedro Osinski Directed by: Andrew Kornhaber Camera Operator: Bahaar Gholipour Executive Producers: Eric Brown & Andrew Kornhaber Previous Episodes Referenced: Ligo’s First Detection of Gravitational Waves: • LIGO’s First Detection of Gravitation… The Future of Gravitational Waves: • The Future of Gravitational Waves How to build a black hole • How to Build a Black Hole Strange Stars — • Strange Stars | Space Time | PBS Digi… Special Thanks to Our Patreon Supporters Big Bang Supporters Robert Doxtator Ahmad Jodeh Caed Aldwych Radu Negulescu Alexander Tamas Morgan Hough Juan Benet Fabrice Eap David Nicklas Quasar Supporters Alec S-L Christina Oegren Mark Heising Vinnie Falco Hypernova Supporters william bryan Julian Tyacke Syed Ansar John R. Slavik Mathew Danton Spivey Donal Botkin John Pollock Edmund Fokschaner Joseph Salomone Hank S Matthew O’Connor chuck zegar Jordan Young John Hofmann Timothy McCulloch Gamma Ray Burst Supporters fieldsa eleanory Cody Lubinsky Peter Mertz Elliot Azizollahi Kevin O’Connell Bryan Dawley Richard Deighton Isaac Suttell Devon Rosenthal Oliver Flanagan Mikhail Klakotskiy Dawn M Fink Bleys Goodson Darryl J Lyle Robert Walter jechamt Bruce B Ismael Montecel M D Mark Daniel Cohen Andrew Richmond Simon Oliphant Mirik Gogri David Hughes Aria Ahmad Brandon Lattin Yannick Weyns Nickolas Andrew Freeman Protius Protius Brian Blanchard Shane Calimlim Tybie Fitzhugh Patrick Sutton Robert Ilardi Eric Kiebler Tatiana Vorovchenko Craig Stonaha Michael Conroy Graydon Goss Frederic Simon Greg Smith Sean Warniaha Tonyface John Robinson A G Kevin Lee Nick Wright Adrian Hatch Paul Rose Yurii Konovaliuk John Funai Cass Costello Geoffrey Short Bradley Jenkins Kyle Hofer Tim Stephani Luaan AlecZero Malte Ubl Nick Virtue Scott Gossett David Bethala Dan Warren John Griffith Daniel Lyons Josh Thomas DFaulk Kevin Warne Andreas Nautsch Brandon labonte.
When we detected the very first gravitational wave, a new window was opened to the mysteries of the universe. We knew we’d see things previously thought impossible. And we just did — an object on the boundary between neutron stars and black holes, which promises to reveal the secrets of both.
An international team of astronomers has employed a set of space telescopes to observe a peculiar nuclear transient known as AT 2019avd. Results of the observational campaign, presented in a paper published December 21 on the pre-print server arXiv, deliver important insights into the properties and behavior of this transient.
Nuclear astrophysics is key to understanding supernova explosions, and in particular the synthesis of the chemical elements that evolved after the Big Bang. Therefore, detecting and investigating nuclear transient events could be essential in order to advance our knowledge in this field.
At a redshift of 0.028, AT 2019avd is a peculiar nuclear transient discovered by the Zwicky Transient Facility (ZTF) in 2009. The transient has been detected in various wavelengths, from radio to soft X-rays, and has recently exhibited two continuous flaring episodes with different profiles, spanning over two years.
It’s said that the clock is always ticking, but there’s a chance that it isn’t. The theory of “presentism” states that the current moment is the only thing that’s real, while “eternalism” is the belief that all existence in time is equally real. Find out if the future is really out there and predictable—just don’t tell us who wins the big game next year.
This video is episode two from the series “Mysteries of Modern Physics: Time”, Presented by Sean Carroll. Learn more about the physics of time at https://www.wondrium.com/YouTube.
00:00 Science and Philosophy Combine When Studying Time. 2:30 Experiments Prove Continuity of Time. 6:47 Time Is Somewhat Predictable. 8:10 Why We Think of Time Differently. 8:49 Our Perception of Time Leads to Spacetime. 11:54 We Dissect Presentism vs Eternalism. 15:43 Memories and Items From the Past Make it More Real. 17:47 Galileo Discovers Pendulum Speeds Are Identical. 25:00 Thought Experiment: “What if Time Stopped?” 29:07 Time Connects Us With the Outside World.
The science of predicting chaotic systems lies at the intriguing intersection of physics and computer science. This field delves into understanding and forecasting the unpredictable nature of systems where small initial changes can lead to significantly divergent outcomes. It’s a realm where the butterfly effect reigns supreme, challenging the traditional notions of predictability and order.
Central to the challenge in this domain is the unpredictability inherent in chaotic systems. Forecasting these systems is complex due to their sensitive dependence on initial conditions, making long-term predictions highly challenging. Researchers strive to find methods that can accurately anticipate the future states of such systems despite the inherent unpredictability.
Prior approaches in chaotic system prediction have largely centered around domain-specific and physics-based models. These models, informed by an understanding of the underlying physical processes, have been the traditional tools for tackling the complexities of chaotic systems. However, their effectiveness is often limited by the intricate nature of the systems they attempt to predict.
A study published today (Dec. 15) in the journal Astronomy & Astrophysics reveals the discovery of two new planetary systems orbiting stars similar to our sun, also known as solar analogs.
The study was led by Dr. Eder Martioli, a full researcher at the Laboratório Nacional de Astrofísica (LNA/MCTI) and an associate researcher at the Institut d’astrophysique de Paris (IAP), and by Dr. Guillaume Hébrard, a researcher at the Institut d’astrophysique de Paris (IAP).
Observations responsible for detecting these two systems, named TOI-1736 and TOI-2141, were conducted using NASA’s TESS space telescope and the SOPHIE spectrograph installed on the 1.93 m telescope at the Observatoire de Haute-Provence (OHP) in southern France, both illustrated in Figure 1.
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If we ever want to simulate a universe, we should probably learn to simulate even a single atomic nucleus. But it’s taken some of the most incredible ingenuity of the past half-century to figure out how that out. All so that today I can teach you how to simulate a very very small universe.
