2006/10/09 by A. M. Cherepashchuk, Cherepashchuk, A. M., R. Sunyaev +17
Earth and Planetary Sciences · Engineering · Physics and Astronomy · #Astrophysical Phenomena and Observations #Astrophysics (astro-ph) #FOS: Physical sciences #High-pressure geophysics and materials #SAS software applications and methods #X-ray Spectroscopy and Fluorescence Analysis
paper · pdf · doi:10.48550/arxiv.astro-ph/0610235
openalex publication_date 2006/10/09 · openalex created_date 2019/06/27 · openalex updated_date 2026/07/28
Hard X-ray INT observations of SS 433 carried out during 2003-2005 years with\nan analysis of precessional and orbital variability is presented. The width of\nX-ray eclipse in the 25-50 keV range at the precessional phase \ψ=0.1\n(accretion disk is open to observer) is higher than that in the Ginga 18.4-27.6\nkeV range. This fact suggests existance the presence of hot extended corona\naround the supercritical accretion disk. Spectrum of hard X-rays in the range\n10-200 keV does not change with the precessional phase which also suggests that\nhard X-ray flux is generated in the hot extended corona around the accretion\ndisk. The parameters of this hot corona are: kT=23-25 keV, \τ = 1.8-2.8. Mass\nratio estimated from the analysis of the ingress part of the eclipse light\ncurve is in the range q=mx/mv=0.3-0.5.\n