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I-band photometry of the quiescent black hole X-ray nova GROJ0422+32=V518 Per: modelling of the orbital light curve and estimation of the black hole mass
A. Cherepashchuk, T. Khruzina, K. Atapin
We present new photometric observations of the X-ray nova GROJ0422+32 (V518 Per) carried out in the I band over 14 nights in 2020 -- 2023. We had to revise the orbital period o…
Population synthesis of AX J1745.6-2901 X-ray nova type binaries with rapidly decreasing orbital periods
A. I. Bogomazov, A. M. Cherepashchuk, T. S. Khruzina +1
The neutron star low mass X-ray binary (LMXB) AX J1745.6-2901 was detected an anomalously fast decrease of orbital period. The decreasing rate of orbital period exceeds the contrib…
Optical, J, and K light curves of XTE J1118+480 = KV UMa: the mass of the black hole and the spectrum of the non-stellar component
A. M. Cherepashchuk, N. A. Katysheva, T. S. Khruzina +3
Optical, J, and K photometric observations of the KV UMa black hole X-ray nova in its quiescent state obtained in 2017-2018 are presented. A significant flickering within light cur…
Optical and J,K-photometry of black hole X-ray nova A0620-00 in passive and active stages of quiescence
A. M. Cherepashchuk, N. A. Katysheva, T. S. Khruzina +4
Photometric observations of the low-mass X-ray binary system A0620-00=V616 Mon are performed in the optical (unfiltered light, lambda_eff~6400A) and the near-infrared J and K-bands…