Abstract With a great deal of probability the compact objects in X-ray binaries LMC X-3 and A 0620-00 have to be a good black holes candidates. This conclusion results from the high mass function f(m) = mx 3sin3; Here mx 3, mo denote the masses of compact object and normal component, and i is orbital inclination. The mass functions have been obtained on the grounds of optical spectroscopical observations by [4] for LMC X-3 and by [8] for A 0620-00. Besides that the absence of X-ray esclipces puts secondary limits on system inclination. (See for details resent reviews by [9], and [6]. By now there also exist optical light curves received on the base of the photometric data by [17] for LMC X-3 and by [8] for A 0620-00. The aim of our work is to give additional constrains on the parameters of these systems by comparing the observed light curves with theoretically calculated ones. It is shown below that hard radiation anisotropy inherent accretion disks around a black hole permits to explain the absence of effective heating of neighbouring normal component in these system. The heating effect would be more prominent if the hard radiation field of compact object were isotropic under typical ratio of component luminosities. Furthermore, the accounting of relativistic Doppler effect [14,15] and of the hot spot arising on the outer disk edge proves to be important for the system A 0620-00.
Light curves and hard radiation anisotropy of accretion disks around black holes in LMC X-3 and A 0620-00
Advances in Space Research ; 8 , 2-3 ; 237-245
1988-01-01
9 pages
Article (Journal)
Electronic Resource
English
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