S E M I N A R IDepartament d'Astronomia i Astrofísica
Universitat de València
Gravitational waves from relativistic simulations of rotational core collapse supernovae
Dr. Harald Dimmelmeier
Max-Planck-Institut für Astrophysik, Garching, Germany
Seminari del Departament d'Astronomia i Astrofísica
Dimecres 05 desembre 2001
Core collapse supernovae are an important astrophysicalsource of gravitational waves. An international collaboration of detectors for such waves will start measurements in 2002. These detectors need very accurate knowledge of the expected wave signals for a successful data analysis. We present results from numerical simulations of rotational supernova core collapse to a neutron star. We solve the general relativistic hydrodynamic equations in a fully dynamic (approximated) spacetime. In our parameter study we identify and quantify the relativistic corrections compared to previous Newtonian simulations. We further compute the signal forms of the gravitational wave emitted during the collapse. Our simulations suggest that relativistic corrections yield important quantitative and qualitative differences.