Beyond the standard model of the disc-line spectral profiles from black hole accretion discs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985815%3A_____%2F14%3A00442447" target="_blank" >RIV/67985815:_____/14:00442447 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.14311/AP.2014.54.0301" target="_blank" >http://dx.doi.org/10.14311/AP.2014.54.0301</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.14311/AP.2014.54.0301" target="_blank" >10.14311/AP.2014.54.0301</a>

Result language

angličtina

Original language name

Beyond the standard model of the disc-line spectral profiles from black hole accretion discs

Original language description

The strong gravitational field of a black hole has distinct effects on the observed profile of a spectral line from an accretion disc near a black hole. The observed profile of the spectral line is broadened and skewed by a fast orbital motion and redshifted by a gravitational field. These effects can help us to constrain the parameters of a system with a black hole, both in active galactic nuclei and in a stellar-mass black hole. Here we explore the fact that an accretion disc emission can be mathematically imagined as a superposition of radiating accretion rings that extend from the inner edge to the outer rim of the disc, with some radially varying emissivity. In our work, we show that a characteristic double-horn profile of several radially confined (relatively narrow) accretion rings or belts could be recognized by the planned instruments onboard future satellites (such as the proposed ESA Large Observatory for X-ray Timing).

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

2014

Confidentiality

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

Name of the periodical

Acta polytechnica

ISSN

1210-2709

e-ISSN

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Volume of the periodical

54

Issue of the periodical within the volume

4

Country of publishing house

CZ - CZECH REPUBLIC

Number of pages

4

Pages from-to

301-304

UT code for WoS article

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EID of the result in the Scopus database

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