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Understanding the iron K alpha line emissivity profile with GR radiative transfer code
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SYSNO ASEP 0539460 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Understanding the iron K alpha line emissivity profile with GR radiative transfer code Tvůrce(i) Zhang, Wenda (ASU-R) ORCID
Dovčiak, Michal (ASU-R) RID, ORCID
Bursa, Michal (ASU-R) RID, ORCID
Svoboda, Jiří (ASU-R) RID, ORCID
Karas, Vladimír (ASU-R) RID, ORCIDZdroj.dok. Proceedings of RAGtime 20/22: Workshops on black holes and neutron stars. - Opava : Silesian University, 2020 - ISBN 978-80-7510-433-5 Rozsah stran s. 383-396 Poč.str. 14 s. Forma vydání Online - E Akce RAGtime /20.-22./ Datum konání 15.10.2018 - 19.10.2018 Místo konání Opava Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. CZ - Česká republika Klíč. slova emissivity profiles ; accretion discs ; radiative transfer Vědní obor RIV BN - Astronomie a nebeská mechanika, astrofyzika Obor OECD Astronomy (including astrophysics,space science) CEP GA17-02430S GA ČR - Grantová agentura ČR Institucionální podpora ASU-R - RVO:67985815 Anotace In this work, we present calculations of the illumination and the iron K alpha emissivity profiles performed with the GR radiative transfer code Monk that employs the Monte Carlo method. In most previous studies the distinction between the illumination and emissivity profiles was not clearly made. For AGN discs, the emissivity profile has a similar shape with the illumination profile, but in the inner most region the former is steeper than the latter, where as for accretion discs in black hole X-ray binaries, the distinction between the two profiles is more dramatic. We find out that the different behavior between AGN and black hole X-ray binary discs is due to the different energy spectra of the illuminating radiation. This suggests that the emissivity profile of the iron Kαline cannot be determined by black hole spin and corona geometry alone and the energy spectrum of the illuminating radiation has to be taken into account. We also study the dependence of the emissivity profile on the geometry of the corona. Pracoviště Astronomický ústav Kontakt Radka Svašková, bibl@asu.cas.cz, Tel.: 323 620 326 Rok sběru 2022
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