whereA′stands for the rest of the universe outside the black hole, and where the entropy of the black hole (BH) is much larger than the entropy ofS. The gravitational collapse is essentially a local phenomenon, which starts when a (sufficiently massive) star losses its thermal equilibrium. ...
The images gathered by the EHT won't be of the gravitational effects of the black hole, or of particles or radiation emitted by the accretion disk, but instead they will constitute an actual effort to see a black hole's accretion disk, and possibl...
[It would be interesting to ask what happens in the Lorentzian picture. However in that case one has to be very careful when dealing with the interior of a black hole, due to the non-static nature of the spacetime there. Also, even for ordinary black hole–i.e., not one formed from...
“This makes me want to watch the old Disney movie again, regardless of how disconnected it is from actual black hole science.” @iamlucky13 Hahaha! My thoughts exactly! I’ve been listening to the soundtrack on Youtube today. Gregg the Obscure says: 10 April 2019 at 7:08 PM is ...
A Schwarzschild Black Hole is defined as a region in space where the gravitational field is so strong that light cannot escape, resulting in a singularity at the Schwarzschild radius. AI generated definition based on: Special Relativity, Electrodynamics, and General Relativity (Second Edition), 2018...
Although we can't see the actual object, we can see the matter — intensely hot gas — swirling around a black hole, called an "accretion disk." Some of this material inevitably falls into the black hole, never to return; much of it gets spewed back out into the cosmos, because black...
This implies that the actual boundaries of the computational domain are: the black hole horizon, the asymptotic infinity, the periodic boundary, the reflection plane and an axis of symmetry where the horizon SD−2 smoothly shrinks to zero size, which is exposed because the localization on the ...
(12)TODAY’S THING TO NOT WORRY ABOUT.AlthoughGizmodohas learned“Tiny Black Holes Could Have Left Tunnels Inside Earth’s Rocks”, they say “A pair of imaginative cosmologists have great news for everyone: If a primordial black hole tunnels through your body, you probably won’t die.” ...
Black Hole is most likely a stellar, dense blackhole due to his mass being more than the sun, but not enough to be the core of a galaxy. His appearance is made up of two parts: his event horizon is round and is solid black, with a surrounding gassy accretion disk comprised of ...
Using a telescope the size of the planet, astronomers have captured the first image of this space oddity. Here's why that matters.