Gravitational Radiation from Pulsating White Dwarfs
نویسنده
چکیده
Rotating white dwarfs undergoing quasi-radial oscillations can emit gravitational radiation in a frequency range from 0.1 − 0.3 Hz. Assuming that the energy source for the gravitational radiation comes from the oblateness of the white dwarf induced by the rotation, the strain amplitude is found to be ∼ 10 for a white dwarf at ∼ 50 pc. The galactic population of these sources is estimated to be ∼ 10, and may produce a confusion limited foreground for proposed advanced detectors in the frequency band between space-based and ground-based interferometers. Nearby oscillating white dwarfs may provide a clear enough signal to investigate white dwarf interiors through gravitational wave asteroseismology. Subject headings: gravitational waves — stars: oscillations — white dwarfs
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