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New black hole images reveal a glowing, fluffy ring and a high-speed jet（图）
黑洞图像 高速喷气机 等离子体物理学
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2023/6/9
In 2017, astronomers captured the first image of a black hole by coordinating radio dishes around the world to act as a single, planet-sized telescope. The synchronized network, known collectively as ...
(No) dynamical constraints on the mass of the black hole in two ULXs
accretion accretion discs – X-rays binaries – black hole physics – binaries spectroscopic
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2010/11/12
We present the preliminary results of two Gemini campaigns to constrain the mass of the black hole in an ultraluminous X-ray source (ULX) via optical spectroscopy. Pilot studies of the optical counter...
The black hole in NGC 1313 X-2
galaxies NGC 1313 – stars individual (NGC 1313 X-2) – X-rays binaries – X-rays galaxies – X-rays
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2010/11/12
The amount of data available for NGC 1313 X-2 make it a cornerstone for the study of ultraluminous X-ray sources(ULXs). We modelled the optical and X-ray data of this ULX with a binary evolution code ...
The effect of coronal radiation on a residual inner disk in the low/hard spectral state of black hole X-ray binary systems
accretion accretion disks — black hole physics —X-rays bi-naries — X-rays stars
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2010/11/15
Thermal conduction between a cool accretion disk and a hot inner corona can result in either evaporation of the disk or condensation of the hot corona. At low mass accretion rates, evaporation dominat...
The Murmur of The Hidden Monster: Chandra's Decadal View of The Super-massive Black Hole in M31
galaxies individual (M 31) – galaxies nuclei – X-rays galaxies
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2010/11/11
The Andromeda galaxy (M31) hosts a central super-massive black hole (SMBH), known as M31∗, which is remarkable for its mass (108 M⊙) and extreme radiative quiescence. Over the past decade, the ...
The angular momentum evolution of stars close to massive black holes (MBHs) is driven by secular torques. In contrast to two-body relaxation, where interactions between stars are incoherent, the resul...