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

Abstract

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.

8 pages, 4 figures, Accepted by Physical Review Letters

References in corpus (6)

• Spectropolarimetry of Supernovae
• A Common Explosion Mechanism for Type Ia Supernovae
• An asymmetric explosion as the origin of spectral evolution diversity in type Ia supernovae
• Capturing the Fire: Flame Energetics and Neutronizaton for Type Ia Supernova Simulations
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• Neutrinos from type Ia supernovae: The gravitationally confined detonation scenario
• Expected insights on type Ia supernovae from LISA's gravitational wave observations
• Decihertz gravitational waves from double white dwarf merger remnants
• Astrophysics with the Laser Interferometer Space Antenna
• The Stochastic Gravitational Wave Background from the Single-Degenerate Channel of Type Ia Supernovae
• Re-visiting gravitational wave events via pulsars