![]() Astrophysicists want to better understand how the inner edge of the accretion disk and the corona change in size and shape as a black hole accretes material from its companion star. Above this disk is the corona, a region of subatomic particles that glows in higher-energy X-rays. A black hole can siphon gas from a nearby star and into a ring of material called an accretion disk that glows in X-rays. Waves of X-rays formed "light echoes" that reflected off the swirling gas near the black hole and revealed changes in the environment’s size and shape. NICER detected X-ray light from a recently discovered black hole, called MAXI J1820+070 (J1820 for short), as it consumed material from a companion star. || Scientists have mapped the environment surrounding a black hole that is 10 times the mass of the Sun using NASA’s Neutron star Interior Composition Explorer (NICER) payload aboard the International Space Station. Watch how X-ray echoes, mapped by NASA’s Neutron star Interior Composition Explorer (NICER) revealed changes to the corona of black hole MAXI J1820+070.Credit: NASA’s Goddard Space Flight CenterMusic: "Superluminal" from Killer TracksComplete transcript available. of Maryland Baltimore County), Chris Henze (Ames) and Tim Sandstrom (CSC Government Solutions LLC) || At maximum resolution this visualization is 8192x8192 pixels in size.Credit: NASA/Bernard J. This simulation was performed on the Pleiades supercomputer at NASA's Ames Research Center. For the 2015 LIGO detection, these events played out in little more than a quarter of a second. As the two black holes near each other, they merge into a single black hole that settles into its "ringdown" phase, where the final gravitational waves are emitted. Space-time distortions radiate away orbital energy and cause the binary to contract quickly. For a system containing black holes with about 30 times the sun’s mass, similar to the one detected by LIGO in 2015, the orbital period at the start of the movie is just 65 milliseconds, with the black holes moving at about 15 percent the speed of light. The merger timescale depends on the masses of the black holes. These distortions spread out and weaken, ultimately becoming gravitational waves (purple). Orange ripples represent distortions of space-time caused by the rapidly orbiting masses. Yellow structures near the black holes illustrate the strong curvature of space-time in the region. || || This visualization shows gravitational waves emitted by two black holes (black spheres) of nearly equal mass as they spiral together and merge. of Maryland Baltimore County), Chris Henze (Ames) and Tim Sandstrom (CSC Government Solutions LLC)Complete transcript available. ![]() Text-on-screen explainer of the above.Credit: NASA/Bernard J. of Maryland Baltimore County), Chris Henze (Ames) and Tim Sandstrom (CSC Government Solutions LLC) ![]() This simulation was performed on the Pleiades supercomputer at NASA's Ames Research Center.Ĭredit: NASA/Bernard J. ![]() This visualization shows gravitational waves emitted by two black holes (black spheres) of nearly equal mass as they spiral together and merge. BHW_Gravitational_Waves_3D_Visualization.gif (500x500)
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |