Počet záznamů: 1
First results from the use of the relativistic and slim disc model SLIMULX in XSPEC
- 1.0483417 - ASÚ 2018 RIV SK eng J - Článek v odborném periodiku
Caballero-García, María Dolores - Bursa, Michal - Dovčiak, Michal - Fabrika, S. - Castro-Tirado, A.J. - Karas, Vladimír
First results from the use of the relativistic and slim disc model SLIMULX in XSPEC.
Contributions of the Astronomical Observatory Skalnaté Pleso. Roč. 47, č. 2 (2017), s. 84-93. ISSN 1335-1842. E-ISSN 1336-0337
Grant CEP: GA MŠMT(CZ) 7E13012
GRANT EU: European Commission(XE) 312789 - STRONGGRAVITY
Institucionální podpora: RVO:67985815
Klíčová slova: accretion-discs * black hole physics * relativistic processes
Obor OECD: Astronomy (including astrophysics,space science)
Impakt faktor: 0.733, rok: 2017
Ultra-Luminous X-ray sources (ULXs) are accreting black holes for which their X-ray properties have been seen to be different to the case of stellar-mass black hole binaries. For most of the cases their intrinsic energy spectra are well described by a cold accretion disc (thermal) plus a curved high-energy emission components. The mass of the black hole (BH) derived from the thermal disc component is usually in the range of 100-1000 solar masses, which have led to the idea that this might represent strong evidence of the Intermediate Mass Black Holes (IMBH), proposed to exist by theoretical studies but with no firm detection (as a class) so far. Recent theoretical and observational developments are leading towards the idea that these sources are instead stellar-mass BHs accreting at an unusual super-Eddington regime. In this paper we briefly describe the model SLIMULX that can be used in XSPEC for the fit of thermal spectra of slim discs around stellar mass BHs in the super-Eddington regime. This model consistently takes all relativistic effects into account. We present the obtained results from the fit of the X-ray spectra from NGC 5408 X-1.
Trvalý link: http://hdl.handle.net/11104/0278744
Počet záznamů: 1