Gravitational Waves from Stellar Black Hole Binaries and the Impact on Nearby Sun-like Stars

Abstract

We investigate the impact of resonant gravitational waves on quadrupole acoustic modes of Sun-like stars located nearby stellar black hole binary systems (such as GW150914 and GW151226). We find that the stimulation of the low-overtone modes by gravitational radiation can lead to sizeable photometric amplitude variations, much larger than the predictions for amplitudes driven by turbulent convection, which in turn are consistent with the photometric amplitudes observed in most Sun-like stars. For accurate stellar evolution models, using up-to-date stellar physics, we predict photometric amplitude variations of $1$ -- $10^3$ ppm for a solar mass star located at a distance between 1 au and 10 au from the black hole binary, and belonging to the same multi-star system. The observation of such a phenomenon will be within the reach of the Plato mission because telescope will observe several portions of the Milky Way, many of which are regions of high stellar density with a substantial mixed population of Sun-like stars and black hole binaries.

7 pages, 2 figures. ApJ, in press

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