Photometric study of the X-ray Nova MAXI J1820 + 070 in the optical range
Abstract
UBVRI observations of the optical counterpart of the X-Ray nova MAXI J1820+070 with relativistic component, probable black hole, were carried out from April 2018 to June 2019 on telescopes located in Slovakia and Crimea. The data covers the stages from the beginning of outburst to quiescence. On separate nights, monitoring was conducted to study flickering in different color bands with a time resolution of 15-45 s. The correlation of the optical and X-ray luminosity is found according to our multicolor photometry and the SWIFT data. The changes in the amplitude and shape of a periodic ~0.7-d wave during the outburst and quiescence are studied. The peculiarities of Nova MAXI J1820 + 070 are compared with those of other black hole candidate binaries. Preliminary conclusions of the physical nature of variability are made.
- Publication:
-
Compact White Dwarf Binaries
- Pub Date:
- September 2019
- Bibcode:
- 2019cwdb.confE..55S