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Black hole burps up shredded star（图）
黑洞 恒星残骸 天文学
2023/6/25
In October 2018, a small star was ripped to shreds when it wandered too close to a black hole in a galaxy located 665 million light years away from Earth. Though it may sound thrilling, the event did ...
An international team of more than 300 scientists from 80 institutions has created the first-ever image of the supermassive black hole at the center of our Milky Way galaxy.
Black holes are paradoxically both the simplest and most complex objects in the universe, as shown by the still-mysterious set of laws Stephen Hawking discovered a half-century ago. Resolving this par...
Even the most extreme objects in the universe – including black holes – must obey certain rules.
New observations of black hole devouring a star reveal rapid disk formation（图）
New observations black hole devouring star rapid disk formation
2020/9/11
When a star passes too close to a supermassive black hole, tidal forces tear it apart, producing a bright flare of radiation as material from the star falls into the black hole. Astronomers study the ...
Astronomers see evidence of Einstein's theories in star orbiting massive black hole（图）
Astronomers evidence Einstein theories star orbiting massive black hole
2019/10/22
More than 100 years ago, Albert Einstein predicted that light is deflected by extremely massive objects, but there is no way to test such powerful effects on Earth. Instead, astronomers turn their att...
VLA Reveals New Object Near Supermassive Black Hole in Famous Galaxy
VLA New Object Near Supermassive Black Hole Galaxy
2017/7/20
Pointing the National Science Foundation’s Very Large Array (VLA) at a famous galaxy for the first time in two decades, a team of astronomers got a big surprise, finding that a bright new object had a...
Black-Hole-Powered Jets Forge Fuel for Star Formation
Black-Hole-Powered Jets Forge Fuel Star Formation
2017/3/13
Astronomers using the Atacama Large Millimeter/submillimeter Array (ALMA) have discovered a surprising connection between a supermassive black hole and the galaxy where it resides.Powerful radio jets ...
A better way to simulate accretion of the supermassive black hole at the center of the Milky Way is developed by PPPL and Princeton scientists
simulate accretion supermassive black hole Milky Way developed PPPL Princeton scientists
2017/1/9
Scientists at Princeton University and the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (PPPL) have developed a rigorous new method for modeling the accretion disk that feeds ...
Perturbed stellar motions around the rotating black hole in Sgr A* for a generic orientation of its spin axis
Perturbed stellar motions rotating black hole generic orientation spin axis
2011/10/17
Empirically determining the averaged variations of the orbital parameters of the stars orbiting the Supermassive Black Hole (SBH) hosted by the Galactic Centre (GC) in Sgr A* is, in principle, a valua...
The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54
The Candidate Intermediate-Mass Black Hole in the Globular Cluster M54
2011/10/13
Ibata et al. reported evidence for density and kinematic cusps in the Galactic globular cluster M54, possibly due to the presence of a 9400 solar-mass black hole. Radiative signatures of accretion ont...
The host galaxies and black-hole:galaxy mass ratios of luminous quasars at z~4
galaxies: active – galaxies: fundamental parameters – galaxies: high-redshift –galaxies: photometry – infrared: galaxies – quasars: general
2011/10/8
We present and analyse the deepest, high-quality Ks-band images ever obtained of luminous quasars at z~4, in an attempt to determine the basic properties of their host galaxies less than 1 Gyr after t...
Non-thermal Processes in Black-Hole-Jet Magnetospheres
Black Hole Magnetosphere Particle Acceleration Radiation Mechanism Gamma-Rays Cosmic Rays
2011/10/8
The environs of supermassive black holes are among the universe's most extreme phenomena. Understanding the physical processes occurring in the vicinity of black holes may provide the key to answer a ...
Mergers of black-hole binaries with aligned spins: Waveform characteristics
Mergers black-hole binaries aligned spins Waveform characteristics
2011/10/18
We conduct a descriptive analysis of the multipolar structure of gravitational-radiation waveforms from equal-mass aligned-spin mergers, following an approach first presented in the complementary cont...
Area spectra of the rotating BTZ black hole from quasinormal modes
black hole quasinormal modes discrete spectrum
2010/3/19
Following Bekenstein's suggestion that the horizon area of a black hole should be quantized, the discrete spectrum of the horizon area has been investigated in various ways. By considering the quasino...