2003/06/21 by Kei Kotake, Shoichi Yamada, Katsuhiko Sato · 3 citations
Physics and Astronomy · #Amplitude #Angular momentum #Astrophysics #Astrophysics and Cosmic Phenomena #Classical mechanics #Gamma-ray bursts and supernovae #Gravitational wave #LIGO #Neutrino #Physics #Pulsars and Gravitational Waves Research #Quantum mechanics #astro-ph
paper · pdf · doi:10.1103/physrevd.68.044023
published as Phys.Rev.D68:044023,2003 · PRD accepted
arxiv created 2003/06/21 · openalex publication_date 2003/08/28 · arxiv updated 2016/08/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We perform a series of two-dimensional hydrodynamic simulations of the rotational collapse of a supernova core in axisymmetry. We employ a realistic equation of state (EOS) and take into account electron capture and neutrino transport by the so-called leakage scheme. It is an important step to apply the realistic EOS coupled with microphysics to 2D simulations for computing gravitational radiation in rotational core collapse. We use the quadrupole formula to calculate the amplitudes and the waveforms of the gravitational wave assuming Newtonian gravity. With these computations, we extend the conventional category of the gravitational waveforms. Our results show that the peak amplitudes of the gravitational wave are mostly within the sensitivity range of laser interferometers such as TAMA and the first LIGO for a source at a distance of 10 kpc. Furthermore, we find that the amplitudes of the second peaks are within the detection limit of the first LIGO for the source, and first point out the importance of the detection, since it will give us information as to the angular momentum distribution of evolved massive stars.