Diagnostics of the black hole candidate SS433 with the RXTE
| dc.creator | Filippova, E. | |
| dc.creator | Revnivtsev, M. | |
| dc.creator | Fabrika, S. | |
| dc.creator | Postnov, K. | |
| dc.creator | Seifina, E. | |
| dc.date | 2006-09-13 | |
| dc.date | 2006-09-14 | |
| dc.date.accessioned | 2026-07-07T10:23:36Z | |
| dc.date.available | 2026-07-07T10:23:36Z | |
| dc.description | We present our analysis of the extensive monitoring of SS433 by the RXTE observatory collected over the period 1996-2005. The difference between energy spectra taken at different precessional and orbital phases shows the presence of strong photoabsorption (N_H>10^{23}cm^{-2}) near the optical star, probably due to its powerful, dense wind. Therefore the size of the secondary deduced from analysis of X-ray orbital eclipses might be significantly larger than its Roche lobe size, which must be taken into account when evaluating the mass ratio from analysis of X-ray eclipses. Assuming that a precessing accretion disk is geometrically thick, we recover the temperature profile in the X-ray emitting jet that best fits the observed precessional variations in the X-ray emission temperature. The hottest visible part of the X-ray jet is located at a distance of l_0/a~0.06-0.09, or ~2-3*10^{11}cm from the central compact object, and has a temperature of about T_{max}~30 keV. We discovered appreciable orbital X-ray eclipses at the ``crossover'' precessional phases (jets are in the plane of the sky, disk is edge-on), which under model assumptions put a lower limit on the size of the optical component R/a>0.5 and an upper limit on a mass ratio of binary companions q=M_x/M_{opt}<0.3-0.35, if the X-ray opaque size of the star is not larger than 1.2R_{Roche, secondary}. | |
| dc.description | 9 pages, 9 figures, accepted for publication in Astronomy and Astrophysics | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0609367 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0609367 | |
| dc.identifier | Astron.Astrophys.460:125-131,2006 | |
| dc.identifier | doi:10.1051/0004-6361:20054784 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/175887 | |
| dc.subject | Astrophysics | |
| dc.title | Diagnostics of the black hole candidate SS433 with the RXTE | |
| dc.type | text |