Gravitational Radiation from Pulsating Magnetic White Dwarfs

Details Gravitational Radiation from Pulsating Magnetic White Dwarfs Gravitational Radiation from Pulsating Magnetic White Dwarfs

Jul 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004ap.....47..324b&link_type=abstract

Astrophysics (English translation of Astrofizika), v. 47, Issue 3, p. 324-334 (2004).

Astronomy and Astrophysics

Astrophysics

Stars, White Dwarfs, Gravitational Radiation, Stars - White Dwarfs - Gravitational Radiation

Scientific paper

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 10-25 for a white dwarf at 50 pc. We had calculated thermal energy losses through a magneto-hydrodynamic mechanism and found it smaller than estimated before. The galactic population of these sources is estimated to be 107 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 astroseismology.

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