White dwarfs stripped by massive black holes: sources of coincident gravitational and electromagnetic radiation
arXiv:1005.3987 · doi:10.1111/j.1745-3933.2010.00930.x
Abstract
White dwarfs inspiraling into black holes of mass $\MBH\simgt 10^5M_\odot$ are detectable sources of gravitational waves in the LISA band. In many of these events, the white dwarf begins to lose mass during the main observational phase of the inspiral. The mass loss starts gently and can last for thousands of orbits. The white dwarf matter overflows the Roche lobe through the point at each pericenter passage and the mass loss repeats periodically. The process occurs very close to the black hole and the released gas can accrete, creating a bright source of radiation with luminosity close to the Eddington limit, ~erg~s. This class of inspirals offers a promising scenario for dual detections of gravitational waves and electromagnetic radiation.
5 pages, 3 figures. Minor changes. Accepted in MNRAS Letters on August 6 2010
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