massachusetts institute of technology corona
"NICER is great because it's so nimble," Kara says. For the first time ever, astronomers at Massachusetts Institute of Technology (MIT) and elsewhere have witnessed a supermassive black hole's corona – an ultrabright, billion-degree ring of high energy particles encircling the black hole's event horizon – getting abruptly destroyed. "With the caveat that this event happened from a stellar tidal disruption, this would be some of the strictest constraints we have on where the corona must exist," Kara says.The corona has since reformed, lighting up in high-energy X-rays which the team was also able to observe. ScienceDaily, 16 July 2020. It also might have thrown the disk's magnetic field lines out of whack in a way that it could no longer generate and support a high-energy corona.This last point is a potentially important one for understanding how coronas first form.
Massachusetts Institute of Technology (MIT) Today at 7:29 AM Scientists have found that a corona discharge can strengthen in wind... y conditions, glowing more brightly as the wind further electrifies the air. "We want to keep an eye on it," Kara says.
"Following the corona's disappearance, astronomers continued to watch as the black hole began to slowly pull together material from its outer edges to reform its swirling accretion disk, which in turn began to spin up high-energy X-rays close to the black hole's event horizon.
ScienceDaily. Massachusetts Institute of Technology 77 Massachusetts Avenue, Cambridge, MA, USA. "This will be really important to understanding how a black hole's corona is heated and powered in the first place. "Physicists are unsure exactly what causes a corona to form, but they believe it has something to do with the configuration of magnetic field lines that run through a black hole's accretion disk.
"This was an AGN that we sort of knew about, but it wasn't very special," Kara says. Or view hourly updated newsfeeds in your RSS reader:Keep up to date with the latest news from ScienceDaily via social networks:Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. "Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. "This seems to be the first time we've ever seen a corona first of all disappear, but then also rebuild itself, and we're watching this in real-time," Kara says. ScienceDaily. In a first, astronomers watch a black hole's corona disappear, then reappear: A colliding star may have triggered the drastic transformation. "After ASSASN saw it go through this huge crazy outburst, we watched as the corona disappeared," Kara recalls. Questions?Massachusetts Institute of Technology. Search websites, locations, and people. This may have caused the temporary flash in brightness that ASSASN captured.
"Then they noticed that this run-of-the-mill AGN became suddenly bright, which got our attention, and we started pointing lots of other telescopes in lots of other wavelengths to look at it. Every day, NICER could take a quick little look at this AGN, then go off and do something else.
Massachusetts Institute of Technology. While a crown-encrusted virus has run roughshod over the world, another entirely different corona about 100 million light years from Earth has mysteriously disappeared.For the first time, astronomers at MIT and elsewhere have watched as a supermassive black hole's own corona, the ultrabright, billion-degree ring of high-energy particles that encircles a black hole's event horizon, was abruptly destroyed.The cause of this dramatic transformation is unclear, though the researchers guess that the source of the calamity may have been a star caught in the black hole's gravitational pull. It's not as bright as it once was, but the researchers are continuing to monitor it, though less frequently, to see what more this system has in store. (2020, July 16).
To stymie the spread of COVID-19 (coronavirus), researchers at the Massachusetts Institute of Technology have developed an app to help people steer clear of anyone who has tested positive. ScienceDaily shares links with scholarly publications in the Content on this website is for information only. See More Results. Their drug, an engineered monoclonal antibody that targets the virus, has shown success in early-stage clinical trials. "Then they noticed that this run-of-the-mill AGN became suddenly bright, which got our attention, and we started pointing lots of other telescopes in lots of other wavelengths to look at it. Image. Massachusetts Institute of Technology. "But in this object, we saw it change by 10,000 over a year, and it even changed by a factor of 100 in eight hours, which is just totally unheard of and really mind-boggling,” a The wayward star that fell into the supermassive black hole also might have disturbed the magnetic field lines of the black hole's accretion disk, according to the study authors. Have any problems using the site? Scientists have found that a corona discharge can strengthen in windy conditions, glowing more brightly as the wind further electrifies the air. "This will be really important to understanding how a black hole's corona is heated and powered in the first place. Education; Research; Innovation; Admissions + Aid; Campus Life; News; Alumni; About MIT; More ↓ Admissions + Aid; Campus Life; News; Alumni; About MIT; Menu ↓ Search.
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