搜索结果: 1-14 共查到“理学 Supermassive Black Holes”相关记录14条 . 查询时间(0.66 秒)
Supermassive Black Holes Control Star Formation In Large Galaxies（图）
Supermassive Black Holes Control Star Formation Large Galaxies
2018/1/10
Young galaxies blaze with bright new stars forming at a rapid rate, but star formation eventually shuts down as a galaxy evolves. A new study, published January 1, 2018, in Nature, shows that the mass...
Astronomers Detect Orbital Motion in Pair of Supermassive Black Holes
Astronomers Orbital Motion Supermassive Black Holes
2017/7/24
Using the supersharp radio “vision” of the National Science Foundation’s Very Long Baseline Array (VLBA), astronomers have made the first detection of orbital motion in a pair of supermassive black ho...
Pairs of Supermassive Black Holes in Galaxies May Be Rarer Than Previously Thought（图）
Supermassive Black Holes Galaxies Previously Thought
2015/9/25
There may be fewer pairs of supermassive black holes orbiting each other at the cores of giant galaxies than previously thought, according to a new study by astronomers who analyzed data from the Nati...
A Lower Limit on the Halo Mass to form Supermassive Black Holes
black hole physics — hydrodynamics— galaxies: nuclei—accretion:accretion discs
2011/10/11
We consider a scenario where supermassive black holes form through direct accumulation of gas at the centre of proto-galaxies. In the first stage, the accumulated gas forms a super-massive star whose ...
VHE gamma-ray Emission from Passive Supermassive Black Holes: Constraints for NGC 1399
Emission Passive Supermassive Black Holes
2011/9/28
Very high energy (VHE; >100 GeV) gamma-rays are expected to be emitted from the vicinity of super-massive black holes (SMBH), irrespective of their activity state. In the magnetosphere of rotating SMB...
Formation of galactic nuclei with multiple supermassive black holes at high redshifts
black hole physics – galaxies:nuclei – galaxies:evolution – galaxies:high redshift – galaxies:kinematics dynamics
2011/9/27
We examine the formation of groups of multiple supermassive black holes (SMBHs) in gas-poor galactic nuclei due to the high merger rate of galaxies at high redshifts. We calculate the relative likelih...
Retrograde Accretion and Merging Supermassive Black Holes
accretion accretion discs black hole physics galaxies formation – galaxies
2010/11/12
We investigate whether a circumbinary gas disc can coalesce a supermassive black hole
binary system in the centre of a galaxy. This is known to be problematic for a prograde disc.
We show that in co...
Properties of Accretion Flows Around Coalescing Supermassive Black Holes
Cosmology and Extragalactic Astrophysics (astro-ph.CO) General Relativity and Quantum Cosmology (gr-qc)
2010/12/29
What are the properties of accretion flows in the vicinity of coalescing supermassive black holes (SBHs)? The answer to this question has direct implications for the feasibility of coincident detectio...
Lurking at the centre of nearly every galaxy and gobbling up stars in their vicinity, supermassive black holes are a truly menacing feature of the universe. Now, an international team of astronomers c...
Star formation near supermassive black holes。
Obscured and unobscured growth of supermassive black holes
unobscured growth supermassive black holes
2009/6/30
Obscured and unobscured growth of supermassive black holes。
Supermassive black holes in galactic nuclei。
17-May-2007，LIVERMORE, Calif. Astronomers have discovered the exact location and makeup of a pair of supermassive black holes at the center of a collision of two galaxies more than 300 million light y...
Adaptive optics pinpoints 2 supermassive black holes in colliding galaxies
optics black holes
2007/5/21
17-May-2007，SANTA CRUZ, CA--Astronomers have used powerful adaptive optics technology at the W. M. Keck Observatory in Hawaii to reveal the precise locations and environments of a pair of supermassive...