Rarefied Gaseous Disk Around Black Hole in the System of V4641 Sgr

V. P. Goranskij, E. A. Barsukova, A. N. Burenkov +1

The results of photometric CCD monitoring and spectral observations of the black hole binary and microquasar V4641 Sgr in the quiet state are presented. The ellipsoidal light curve…