Gravitational Wave Emission from the Single-Degenerate Channel of Type Ia Supernovae

Details Gravitational Wave Emission from the Single-Degenerate Channel of Type Ia Supernovae Gravitational Wave Emission from the Single-Degenerate Channel of Type Ia Supernovae

2010-11-29

arxiv.org/abs/1011.6387v3

Phys.Rev.Lett.106:201103,2011

Astronomy and Astrophysics

Astrophysics

High Energy Astrophysical Phenomena

8 pages, 4 figures, Accepted by Physical Review Letters

Scientific paper

10.1103/PhysRevLett.106.201103

The thermonuclear explosion of a C/O white dwarf as a Type Ia supernova (SN Ia) generates a kinetic energy comparable to that released by a massive star during a SN II event. Current observations and theoretical models have established that SNe Ia are asymmetric, and therefore--like SNe II--potential sources of gravitational wave (GW) radiation. We perform the first detailed calculations of the GW emission for a SN Ia of any type within the single-degenerate channel. The gravitationally-confined detonation (GCD) mechanism predicts a strongly-polarized GW burst in the frequency band around 1 Hz. Third-generation spaceborne GW observatories currently in planning may be able to detect this predicted signal from SNe Ia at distances up to 1 Mpc. If observable, GWs may offer a direct probe into the first few seconds of the SNe Ia detonation.

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