Similarities in neutron star and black hole accretion

1994 ◽  
Vol 92 ◽  
pp. 511 ◽  
Author(s):  
M. van der Klis
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Black Hole Accretion ◽  
Hole Accretion

scholarly journals Production of the entire range ofr-process nuclides by black hole accretion disc outflows from neutron star mergers

2016 ◽  
Vol 463 (3) ◽  
pp. 2323-2334 ◽  
Author(s):  
Meng-Ru Wu ◽  
Rodrigo Fernández ◽  
Gabriel Martínez-Pinedo ◽  
Brian D. Metzger
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Entire Range ◽  
Accretion Disc ◽  
Black Hole Accretion ◽  
Hole Accretion

scholarly journals Weak Alfvénic turbulence in relativistic plasmas II: current sheets and dissipation

2021 ◽  
Vol 87 (5) ◽  
Author(s):  
B. Ripperda ◽  
J.F. Mahlmann ◽  
A. Chernoglazov ◽  
J.M. TenBarge ◽  
E.R. Most ◽  
...  
Keyword(s):  
Black Hole ◽  
Neutron Star ◽  
Magnetic Energy ◽  
Alfven Waves ◽  
Alfvén Waves ◽  
Small Scale ◽  
Weak Turbulence ◽  
Current Sheets ◽  
Black Hole Accretion ◽  
Hole Accretion

Alfvén waves as excited in black hole accretion disks and neutron star magnetospheres are the building blocks of turbulence in relativistic, magnetized plasmas. A large reservoir of magnetic energy is available in these systems, such that the plasma can be heated significantly even in the weak turbulence regime. We perform high-resolution three-dimensional simulations of counter-propagating Alfvén waves, showing that an $E_{B_{\perp }}(k_{\perp }) \propto k_{\perp }^{-2}$ energy spectrum develops as a result of the weak turbulence cascade in relativistic magnetohydrodynamics and its infinitely magnetized (force-free) limit. The plasma turbulence ubiquitously generates current sheets, which act as locations where magnetic energy dissipates. We show that current sheets form as a natural result of nonlinear interactions between counter-propagating Alfvén waves. These current sheets form owing to the compression of elongated eddies, driven by the shear induced by growing higher-order modes, and undergo a thinning process until they break-up into small-scale turbulent structures. We explore the formation of current sheets both in overlapping waves and in localized wave packet collisions. The relativistic interaction of localized Alfvén waves induces both Alfvén waves and fast waves, and efficiently mediates the conversion and dissipation of electromagnetic energy in astrophysical systems. Plasma energization through reconnection in current sheets emerging during the interaction of Alfvén waves can potentially explain X-ray emission in black hole accretion coronae and neutron star magnetospheres.

Iron Fluorescence from within the Innermost Stable Orbit of Black Hole Accretion Disks

1997 ◽  
Vol 488 (1) ◽  
pp. 109-118 ◽  
Author(s):  
Christopher S. Reynolds ◽  
Mitchell C. Begelman
Keyword(s):  
Black Hole ◽  
Accretion Disks ◽  
Stable Orbit ◽  
Black Hole Accretion ◽  
Hole Accretion

Hydrodynamics of Black Hole–Accretion Disk Collision

1998 ◽  
Vol 507 (1) ◽  
pp. 131-144 ◽  
Author(s):  
Pavel B. Ivanov ◽  
Igor V. Igumenshchev ◽  
Igor D. Novikov
Keyword(s):  
Black Hole ◽  
Accretion Disk ◽  
Black Hole Accretion ◽  
Black Hole Accretion Disk ◽  
Hole Accretion

The magnetohydrodynamics of black hole accretion

1986 ◽  
Vol 126 (1) ◽  
pp. 99-104 ◽  
Author(s):  
U. S. Pandey ◽  
G. S. Dubey
Keyword(s):  
Black Hole ◽  
Black Hole Accretion ◽  
Hole Accretion

scholarly journals The Galaxy Zoo survey for giant AGN-ionized clouds: past and present black hole accretion events

2011 ◽  
Vol 420 (1) ◽  
pp. 878-900 ◽  
Author(s):  
William C. Keel ◽  
S. Drew Chojnowski ◽  
Vardha N. Bennert ◽  
Kevin Schawinski ◽  
Chris J. Lintott ◽  
...  
Keyword(s):  
Black Hole ◽  
Black Hole Accretion ◽  
The Galaxy ◽  
Hole Accretion
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