http://arxiv.org/abs/2208.11525
We investigate electromagnetic and gravitational radiation generated during a process of the tidal stripping of a white dwarf star circulating a black hole. We model a white dwarf star by a Bose-Fermi droplet at zero temperature and use the quantum hydrodynamic equations to simulate evolution of a black hole-white dwarf binary system. While going through the periastron, the white dwarf loses a small fraction of its mass. The mass falling onto a black hole is a source of powerful electromagnetic and gravitational radiation. Bursts of ultraluminous radiation are flared at each periastron passage by a white dwarf. This resembles the recurrent flaring of X-ray sources discovered recently by Irwin et al. Gravitational energy bursts occur mainly through emission at very low frequencies. The accretion disc, formed due to the stripping of a white dwarf, starts at some point to contribute continuously to radiation of both electromagnetic and gravitational type.
T. Karpiuk, M. Nikołajuk and M. Brewczyk
Thu, 25 Aug 22
8/43
Comments: 9 pages, 5 figures. arXiv admin note: text overlap with arXiv:1907.12419