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Scientists detected a chirp of a baby black hole

This ringing does, in fact, predict the black hole's mass and spin.
Rendering of a star called S0-2 orbiting the supermassive black hole at the center of the Milky Way. It did not fall in, but its close approach could be one reason for the black hole’s growing appetite.

The enormous black hole at the center of our galaxy appears to be getting...

UCLA astronomers notice brightest light in 24 years of observations.
Like a starved dragon, the supermassive black hole in the center of quasar gobbles materials with endless appetite. These materials glares shiningly when gathering into an accretion disk before finally sliding down into the black hole. Outside the accretion disk, materials are pumped from all directions to the center to feed the black hole. These materials are described as inflows. CREDIT Image by CUI Jie, Universit of Science and Technoloy of China

Researchers observe energy consumption in quasars

As the most luminous steady beacons in the Universe, quasars are believed to be powered by an accretion disk around the central black hole.
X-ray (NASA/CXC/SAO/A.Vikhlinin et al.); Optical (SDSS)

Scientists discovered the largest observed black hole to date

Scientists have found the largest black hole ever observed at the center of Holm 15A, a galaxy about 700 million light-years away.
Data from NASA’s Chandra X-ray Observatory have revealed what may be the most distant shrouded black hole. Credits: X-ray: NASA/CXO/Pontificia Universidad Catolica de Chile/F. Vito; Radio: ALMA (ESO/NAOJ/NRAO); optical: Pan-STARRS

Evidence for the farthest cloaked black hole found in early universe

Astronomers have discovered evidence for the farthest "cloaked" black hole found to date, using NASA's Chandra X-ray Observatory.
Where in the universe can you find a black hole nursery?

Where in the universe can you find a black hole nursery?

Now, it is possible for astronomers to track down the black hole nursery, thanks to a new model developed by gravitational wave researchers at the University of Birmingham.
An artistic visualization of the star S0-2 as it passes by the supermassive black hole at the galactic center, which has warped the geometry of space and time. As the star gets closer to the supermassive black hole, its light undergoes a gravitational redshift that is predicted by Einstein’s general theory of relativity. (National Science Foundation graphic by Nicolle R. Fuller)

Milky Way’s central black hole puts theory of general relativity to the test

Almost a century later, Albert Einstein published his iconic theory of General relativity. Now, scientists at the University of California, Los Angeles have tested...
NASA's Spitzer Space Telescope captures galaxy NGC 4395 in infrared light. NGC 4395 is about 1,000 times smaller than the Milky Way, and a team of astronomers including U-M's Elena Gallo has determined the mass of the black hole at its center. CREDIT NASA

Astronomers determined the mass of surprisingly tiny black hole

The motions of gas and stars in the nuclei of nearby galaxies have demonstrated that massive black holes are common and that their masses...
This image shows how the inner region of the accretion disk (red) aligns with the equatorial plane of the black hole. The outer disk is tilted away. The inner disk (where the black curve dips) is horizontal, signaling the long-sought Bardeen-Petterson alignment. Credit: Sasha Tchekhovskoy/Northwestern University; Matthew Liska/University of Amsterdam

40 year black hole mystery solved with most detailed simulation ever

Using a custom built code and a supercomputer, an international team of scientists has created the most detailed, highest resolution simulation of a black...