2004/05/31 by Norichika Sago, Kunihito Ioka, Takashi Nakamura +1 · 1 citation
Physics and Astronomy · #gr-qc #astro-ph
paper · pdf · doi:10.1103/physrevd.70.104012
published as Phys.Rev.D70:104012,2004 · Revtex4, 10 pages, 6 figures, Fig.2 and Fig.3 replaced, minor changes to text in Sec.I and Sec.V, typos corrected, some reference added, Version to be published in PRD
arxiv created 2004/11/16 · arxiv updated 2014/11/17
Gamma-Ray Bursts (GRBs) are now considered as relativistic jets. We analyze the gravitational waves from the acceleration stage of the GRB jets. We show that (i) the point mass approximation is not appropriate if the opening half-angle of the jet is larger than the inverse of the Lorentz factor of the jet, (ii) the gravitational waveform has many step function like jumps, and (iii) the practical DECIGO and BBO may detect such an event if the GRBs occur in Local group of galaxy. We found that the light curve of GRBs and the gravitational waveform are anti-correlated so that the detection of the gravitational wave is indispensable to determine the structure of GRB jets.