dc.contributor.author |
Suleimanov V. |
|
dc.contributor.author |
Lipunova G. |
|
dc.contributor.author |
Shakura N. |
|
dc.date.accessioned |
2018-09-17T20:44:28Z |
|
dc.date.available |
2018-09-17T20:44:28Z |
|
dc.date.issued |
2004 |
|
dc.identifier.issn |
0379-6566 |
|
dc.identifier.uri |
https://dspace.kpfu.ru/xmlui/handle/net/133970 |
|
dc.description.abstract |
We present a method of modeling X-ray and optical light curves of time-dependent accretion α-disks in X-ray novae. The model is based on an analytic solution for α-disk evolution after the outburst maximum. The method involves relativistic effects near a Kerr black hole and self-irradiation of an accretion disk. The method is applied to the outbursts of X-ray Nova Monocerotis 1975 (A 0620-00) and X-ray Nova Muscae 1991 (GRS 1124-68). Recently, narrow limits were obtained for the masses and the distances of these binaries (11 ± 2M⊙, 1.1 kpc for A 0620-00 and 7 ± 0.6M⊙, 5.1 kpc for GRS 1124-68, Gelino et al. (2001a,b)). This allows us to limit other model parameters: Kerr parameter (0.5-0.7 and ∼ 0.95 respectively for A 0620-00 and GRS 1124-68) and α-parameter (0.6-0.8 and 0.4-0.5). The inner radius of the accretion disk in GRS 1124-68 has to be few times larger than that of the last marginally stable orbit. Modeled disks in both systems should be thicker than in the standard theory and should thermalize a significant part of the incident X-ray flux (≳ 20%). Possible reasons for these results are discussed. |
|
dc.relation.ispartofseries |
European Space Agency, (Special Publication) ESA SP |
|
dc.subject |
Accretion disks |
|
dc.subject |
Binaries |
|
dc.subject |
Novae: Individual (Nova Mon 1975; Nova Mus 1991) |
|
dc.title |
Light curve modeling for time-dependent accretion disks in X-ray novae with general relativity effects taken into account |
|
dc.type |
Conference Paper |
|
dc.relation.ispartofseries-issue |
552 |
|
dc.collection |
Публикации сотрудников КФУ |
|
dc.relation.startpage |
403 |
|
dc.source.id |
SCOPUS03796566-2004-552-SID23844509840 |
|