Role of the emission angular directionality in the spin determination of accreting black holes

Details Role of the emission angular directionality in the spin determination of accreting black holes Role of the emission angular directionality in the spin determination of accreting black holes

Jul 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aipc.1248..515s&link_type=abstract

X-RAY ASTRONOMY 2009; PRESENT STATUS, MULTI-WAVELENGTH APPROACH AND FUTURE PERSPECTIVES: Proceedings of the International Confer

Astronomy and Astrophysics

Astronomy

1

Accretion, Black Holes, X-Ray Spectra, Radiative Transfer, Infall, Accretion, And Accretion Disks, Black Holes, X-Ray, Radiative Transfer, Scattering

Scientific paper

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. We perform radiation transfer computations of an X-ray irradiated disc atmosphere to constrain the directionality of the outgoing X-rays in the 2-10 keV energy band. We study how sensitive the spin determination is to the assumptions about the intrinsic angular distribution of the emission.

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