Black hole spin dependence of general relativistic multi-transonic accretion close to the horizon

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F15%3A00439086" target="_blank" >RIV/67985815:_____/15:00439086 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.newast.2014.11.007" target="_blank" >http://dx.doi.org/10.1016/j.newast.2014.11.007</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.newast.2014.11.007" target="_blank" >10.1016/j.newast.2014.11.007</a>

Result language

angličtina

Original language name

Black hole spin dependence of general relativistic multi-transonic accretion close to the horizon

Original language description

We introduce a novel formalism to investigate the role of the spin angular momentum of astrophysical black holes in influencing the behavior of low angular momentum general relativistic accretion. We propose a metric independent analysis of axisymmetricgeneral relativistic flow, and consequently formulate the space and time dependent equations describing the general relativistic hydrodynamic accretion flow in the Kerr metric. The associated stationary critical solutions for such flow equations are provided and the stability of the stationary transonic configuration is examined using an elegant linear perturbation technique. We examine the properties of infalling material for both prograde and retrograde accretion as a function of the Kerr parameter atextremely close proximity to the event horizon. Our formalism can be used to identify a new spectral signature of black hole spin, and has the potential of performing the black hole shadow imaging corresponding to the low angular momentu

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BN - Astronomy and celestial mechanics, astrophysics

OECD FORD branch

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Project

<a href="/en/project/GC13-00070J" target="_blank" >GC13-00070J: Accretion process in strong gravity of Galactic Center</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2015

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

New Astronomy

ISSN

1384-1076

e-ISSN

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Volume of the periodical

37

Issue of the periodical within the volume

May

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

24

Pages from-to

81-104

UT code for WoS article

000349503400013

EID of the result in the Scopus database

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