About: Role of emission angular directionality in spin determination of accreting black holes with a broad iron line

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About: Role of emission angular directionality in spin determination of accreting black holes with a broad iron line Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We discuss the method to determine the spin of black holes by employing the broad relativistic iron line profiles in the X-ray domain. The precision of the spectral fitting procedure could be compromised by an inappropriate account for the angular distribution of the disc emission. Often a unique profile is assumed, invariable over the entire range of radii in the disc and energy in the spectral band. We study how sensitive the spin determination is to the assumptions about the intrinsic angular distribution of the emitted photons. Based on the radiation transfer computations, we produced a new extension to the KY software package for X-ray spectra fitting of relativistic accretion disc models. We found that, from the commonly used simple profiles, the isotropic distribution of the angular emissivity reproduces our model data to the best precision. We discuss the method to determine the spin of black holes by employing the broad relativistic iron line profiles in the X-ray domain. The precision of the spectral fitting procedure could be compromised by an inappropriate account for the angular distribution of the disc emission. Often a unique profile is assumed, invariable over the entire range of radii in the disc and energy in the spectral band. We study how sensitive the spin determination is to the assumptions about the intrinsic angular distribution of the emitted photons. Based on the radiation transfer computations, we produced a new extension to the KY software package for X-ray spectra fitting of relativistic accretion disc models. We found that, from the commonly used simple profiles, the isotropic distribution of the angular emissivity reproduces our model data to the best precision. (en)
Title	Role of emission angular directionality in spin determination of accreting black holes with a broad iron line Role of emission angular directionality in spin determination of accreting black holes with a broad iron line (en)
skos:prefLabel	Role of emission angular directionality in spin determination of accreting black holes with a broad iron line Role of emission angular directionality in spin determination of accreting black holes with a broad iron line (en)
skos:notation	RIV/67985815:_____/09:00332636!RIV10-MSM-67985815
http://linked.open...avai/riv/aktivita	P Z
http://linked.open...avai/riv/aktivity	P(GA205/07/0052), P(GD205/09/H033), P(IAA300030510), P(LC06014), P(ME09036), Z(AV0Z10030501)
http://linked.open...iv/cisloPeriodika	1
http://linked.open...vai/riv/dodaniDat	2010
http://linked.open...aciTvurceVysledku	Dovčiak, Michal Karas, Vladimír Svoboda, Jiří Goosmann, René
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	339707
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/09:00332636
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	accretion disc; black hole physics; active galaxies (en)
http://linked.open.../riv/klicoveSlovo	active galaxies black hole physics accretion disc
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[1EE046EB4E00]
http://linked.open...i/riv/nazevZdroje	Astronomy and Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	4 (xsd:int)
http://linked.open...cetTvurcuVysledku	4 (xsd:int)
http://linked.open...vavai/riv/projekt	General relativity and its applications in astrophysics and cosmology Center for Theoretical Astrophysics Signatures of strong gravity in black hole accretion discs and in outflows Revealing black holes: spectral, polarimetric and timing studies using satellite data Radiation processes near compact objects: timing and polarimetry studies
http://linked.open...UplatneniVysledku	2009
http://linked.open...v/svazekPeriodika	507
http://linked.open...iv/tvurceVysledku	Dovčiak, Michal Karas, Vladimír Svoboda, Jiří Goosmann, René
http://linked.open...ain/vavai/riv/wos	000271782900006
http://linked.open...n/vavai/riv/zamer	Astronomie a astrofyzika
issn	0004-6361
number of pages	17 (xsd:int)
is http://linked.open...avai/riv/vysledek of	Role of emission angular directionality in spin determination of accreting black holes with a broad iron line Role of emission angular directionality in spin determination of accreting black holes with a broad iron line Role of emission angular directionality in spin determination of accreting black holes with a broad iron line Role of emission angular directionality in spin determination of accreting black holes with a broad iron line

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