X-ray polarimetry as a new tool to discriminate reflection from absorption scenarios - predictions for MCG-6-30-15

0381269 - ASÚ 2013 RIV GB eng J - Článek v odborném periodiku
Marin, F. - Goosmann, R. W. - Dovčiak, Michal - Muleri, F. - Porquet, D. - Grosso, N. - Karas, Vladimír - Matt, G.
X-ray polarimetry as a new tool to discriminate reflection from absorption scenarios - predictions for MCG-6-30-15.
Monthly Notices of the Royal Astronomical Society. Roč. 426, č. 1 (2012), L101-L105. ISSN 0035-8711. E-ISSN 1365-2966
Grant CEP: GA MŠMT LD12010
Institucionální podpora: RVO:67985815
Klíčová slova: black holes * accretion disks
Kód oboru RIV: BN - Astronomie a nebeská mechanika, astrofyzika; BN - Astronomie a nebeská mechanika, astrofyzika (ASU-R)
Impakt faktor: 5.521, rok: 2012

We present modelling of X-ray polarization spectra emerging from the two competing scenarios that are proposed to explain the broad Fe Kα line in the Seyfert 1 galaxy MCG-6-30-15. The polarization signature of complex absorption is studied for a partial covering scenario using a clumpy wind and compared to a reflection model based on the lamppost geometry. The shape of the polarization percentage and angle as a function of photon energy are found to be distinctly different between the reflection and the absorption cases. Relativistic reflection produces significantly stronger polarization in the 1-10 keV energy band than absorption.
Trvalý link: http://hdl.handle.net/11104/0211781