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Hace 4 días · The simulation then zooms in on that black hole at a moment when a giant stream of material is torn off a cloud of star-forming gas and begins to swirl around the supermassive black hole. The simulation can continue zooming in, resolving a finer area at each step as it follows the gas on its way toward the hole. Surprisingly Fluffy, Magnetic Disks
Athena will observe hundreds of thousands of black holes, from relatively near to far away, and map the million-degree-hot matter in their surroundings. This includes black holes that formed in the first few hundred million years of the Universe’s long history.
Hace 4 días · Cosmic simulation reveals how black holes grow and evolve. This still from the simulation shows a supermassive black hole, or quasar, surrounded by a swirling disk of material called an accretion ...
8 de sept. de 2020 · A black hole is an astronomical object with a gravitational pull so strong that nothing, not even light, can escape it. A black hole’s “surface,” called its event horizon, defines the boundary where the velocity needed to escape exceeds the speed of light, which is the speed limit of the cosmos.
This has important implications for the theories of galaxy formation and evolution. Black holes exist in different sizes. Stellar black holes, which are around the mass of our Sun, form when very large stars explode as supernovae at the end of their lives.
10 de dic. de 2018 · Loop quantum gravity—a theory that extends general relativity by quantizing spacetime—predicts that black holes evolve into white holes.
Hunting for and characterizing stellar mass black holes, which can include information about their birth process and evolution. NASA's Chandra Adds to Black Hole Birth Announcement
