| Autor: |
G. V. Lipunova, N. I. Shakura |
| Jazyk: |
angličtina |
| Rok vydání: |
2017 |
| Předmět: |
|
| Zdroj: |
Odessa Astronomical Publications, Vol 12, Iss 0, Pp 201-204 (2017) |
| Druh dokumentu: |
article |
| ISSN: |
1810-4215 |
| DOI: |
10.18524/1810-4215.1999.12.93090 |
| Popis: |
The analytic investigation of time dependent accretion in disk is carried out. We consider a disk in a binary system at outburst which has fixed tidally truncated outer radius. The standard model (Shakura-Sunyaev 1973) of the disk is considered. The fully analytic solutions in two different opacity regimes are characterized by power-law variations of accretion rate with time. The solutions supply asymptotic description of the disk evolution after the peak of outburst while the disk is fully ionized. The X-ray flux of multicolor (black-body) α-disk is obtained to vary quasi-exponentially. The application to X-ray novae is briefly discussed concerning observed faster-than-power decays of X-ray light curves. The case of time dependent advective disk is mentioned. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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