A new window on black hole accretion
Sign Up to like & getrecommendations! Published in 2018 at "Nature Astronomy"
DOI: 10.1038/s41550-018-0507-z
Abstract: Recent polarization measurements of the stellar-mass black hole in Cygnus X-1 reveal an extended corona in the inner parts of the accretion flow and open the path for a new era in high-energy astrophysics. read more here.
Keywords: black hole; hole accretion; new window; hole ... See more keywords
Slow black hole accretion drives mass loss
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DOI: 10.1038/s41550-021-01419-8
Abstract: Novel observational evidence appears to confirm that when mass is supplied to massive black holes at low rates, only a fraction is actually accreted. Much of the gas may be lost in a low-speed magnetohydrodynamic… read more here.
Keywords: mass loss; black hole; drives mass; accretion drives ... See more keywords
Reionization with galaxies and active galactic nuclei
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa1138
Abstract: In this work we investigate the properties of the sources that reionized the intergalactic medium (IGM) in the high-redshift Universe. Using a semi-analytical model aimed at reproducing galaxies and black holes in the first ∼1.5 Gyr… read more here.
Keywords: reionization; stellar mass; black hole; hole accretion ... See more keywords
The effects of resolution on black hole accretion simulations of jets
Sign Up to like & getrecommendations! Published in 2020 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/staa2423
Abstract: We perform three general-relativistic magnetohydrodynamic simulations of black hole accretion designed to test how sensitive results are to grid resolution in the jet region. The cases differ only in numerics, modelling the same physical scenario… read more here.
Keywords: effects resolution; black hole; hole accretion; resolution black ... See more keywords
What is the real accretion rate on to a black hole for low-angular-momentum accretion?
Sign Up to like & getrecommendations! Published in 2019 at "Monthly Notices of the Royal Astronomical Society"
DOI: 10.1093/mnras/stz050
Abstract: Mass accretion rate is a key parameter in accretion disk theory. It determines black hole accretion mode. In large scale cosmological simulations studying galaxy formation and evolution, Bondi radius can at most be marginally resolved.… read more here.
Keywords: accretion; accretion rate; hole accretion; mass ... See more keywords