Gravitational Radiation and Equations of State in Super-Dense Cores of Core-Collapse Supernovae

Details Gravitational Radiation and Equations of State in Super-Dense Cores of Core-Collapse Supernovae Gravitational Radiation and Equations of State in Super-Dense Cores of Core-Collapse Supernovae

Feb 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008esnm.conf..160k&link_type=abstract

EXOTIC STATES OF NUCLEAR MATTER. Proceedings of the International Symposium EXOCT07. Held 11-15 June 2007 in Catania University,

Physics

Core Collapse Supernovae, Gravitational Waves, Neutrinos

Scientific paper

Core-collapse supernovae have been supposed to be one of the most plausible sources of gravitational waves. Based on a series of our magnetohydrodynamic core-collapse simulations, we found that the gravitational amplitudes at core bounce can be within the detection limits for the currently running laser-interferometers for a galactic supernova if the central core rotates sufficiently rapidly. This is regardless of the difference of the realistic equations of state and the possible occurence of the QCD phase transition near core bounce. Even if the core rotates slowly, we point out that the gravitational waves generated from anisotropic neutrino radiation in the postbounce phase due to the standing accretion shock instability (SASI) could be within the detection limits of the detectors in the next generation such as LCGT and the advanced LIGO for the galactic source. Since the waveforms significanly depend on the exploding scenarios, our results suggest that we can obtain the information about the long-veiled explosion mechanism from the gravitational wave signals when the supernova occurs near to us.

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