The Method of Transfer Functions to Describe GR Effects in Spectra and Polarisation from Black-hole Accretion Disks

0520225 - ASÚ 2020 RIV US eng C - Conference Paper (international conference)
Karas, Vladimír - Bursa, Michal - Dovčiak, Michal
The Method of Transfer Functions to Describe GR Effects in Spectra and Polarisation from Black-hole Accretion Disks.
Radiative Signatures from the Cosmos: A Conference in Honor of Ivan Hubený. San Francisco: Astronomical Society of the Pacific, 2019 - (Werner, K.), s. 293-298. ASP Conference Series, 519. ISBN 9781583819265. ISSN 1050-3390.
[Conference on Radiative Signatures from the Cosmos. Paris (FR), 23.10.2018-26.10.2018]
R&D Projects: GA MŠMT(CZ) LTAUSA17095; GA ČR(CZ) GC19-01137J
Institutional support: RVO:67985815
Keywords : line-profiles * emission * accretion disks
OECD category: Astronomy (including astrophysics,space science)

We briefly review a fruitful approach to compute a variety of radiation signatures of General Relativity (GR) originating from accretion disks in strong gravity. A set of transfer functions can be pre-computed and then employed to accelerate the ray-traycing computations, generate a series of model spectra, and to fit the model predictions to actual data sets in X-rays. We have been developing this method to examine spectra and light curves and to model the expected polarimetric properties - in particular, to analyse the properties of the corona disk-line geometry with GR effects taken into account. New impetus to this activity is emerging in the anticipation of upcoming missions equipped with the sensitivity to polarimetric properties in X-rays: IXPE (Imaging X-Ray Polarimetry Explorer) and eXTP (enhanced X-ray Timing and Polarimetry mission).
Permanent Link: http://hdl.handle.net/11104/0304914