Generic Gravitational Wave Signals from the Collapse of Rotating Stellar Cores

Details Generic Gravitational Wave Signals from the Collapse of Rotating Stellar Cores Generic Gravitational Wave Signals from the Collapse of Rotating Stellar Cores

2007-02-12

arxiv.org/abs/astro-ph/0702305v2

Phys.Rev.Lett.98:251101,2007

Astronomy and Astrophysics

Astrophysics

4 pages, 3 figures; minor modifications and additions

Scientific paper

10.1103/PhysRevLett.98.251101

We perform general relativistic simulations of stellar core collapse to a proto-neutron star, using a microphysical equation of state as well as an approximate description of deleptonization. We show that for a wide variety of rotation rates and profiles the gravitational wave burst signals from the core bounce are of a generic type, known as Type I in the literature. In our systematic study, using both general relativity and Newtonian gravity, we identify and individually quantify the micro- and macrophysical mechanisms leading to this result, i.e. the effects of rotation, the equation of state, and deleptonization. Such a generic type of signal templates will likely facilitate a more efficient search in current and future gravitational wave detectors of both interferometric and resonant type.

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