Gravitational Radiation from Differentially Rotating and Oscillating White Dwarfs

Mathematics – Logic

Scientific paper

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Scientific paper

We examine the possibility of gravitational radiation from white dwarfs undergoing self-similar oscillations which are fed by the energy released during the relaxation of the differential rotation of white dwarf. We consider two cases of initial angular momentum distribution. Assuming the energy of the self-similar oscillations causing gravitational wave emission is about 1% of the energy dissipated in the differentially rotating white dwarf, the strain amplitudes are found to be less than 10-27 for a white dwarf at 50 pc. The gravitational radiation of the galactic population of white dwarfs may produce a confusion limited foreground above the stochastic cosmological background for proposed advanced detectors in the decihertz frequency band.

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