AN UPPER BOUND FROM HELIOSEISMOLOGY ON THE STOCHASTIC BACKGROUND OF GRAVITATIONAL WAVES

作者：Siegel Daniel M^*; Roth Markus

来源：Astrophysical Journal, 2014, 784(2): 88.

DOI：10.1088/0004-637X/784/2/88

• asteroseismology
• gravitational waves
• stars: oscillations (including pulsations)
• Sun: helioseismology
• Sun: oscillations

The universe is expected to be permeated by a stochastic background of gravitational radiation of astrophysical and cosmological origin. This background is capable of exciting oscillations in solar-like stars. Here we show that solar-like oscillators can be employed as giant hydrodynamical detectors for such a background in the mu Hz to mHz frequency range, which has remained essentially unexplored until today. We demonstrate this approach by using high-precision radial velocity data for the Sun to constrain the normalized energy density of the stochastic gravitational-wave background around 0.11 mHz. These results open up the possibility for asteroseismic missions like CoRoT and Kepler to probe fundamental physics.

• 出版日期2014-4-1