The Kinematics of Gamma-ray Bursts

Details The Kinematics of Gamma-ray Bursts The Kinematics of Gamma-ray Bursts

Apr 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aps..aprj14008s&link_type=abstract

American Physical Society, April Meeting, April 28 - May 1, 2001 Washington, DC Bulletin of the American Physical Society, Vol.

Mathematics

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Scientific paper

I argue that the recently discovered relationship between gamma-ray burst pulse lags and luminosity (Norris, Marani, Bonnell, ApJ 534, 248) can be interpreted kinematically, i.e. it is due to variation among bursts of the line-of-sight velocity of the emitting material. In particular, this interpretation predicts a break in the lag-luminosity relationship. If the supernova 1998bw/GRB980425 event defines this break, then this allows one to establish key burst parameters, i.e. the maximum Lorentz factor ~ 1000 and the jet opening angle ~ 1 degree. This reduces the energy necessary to xsgenerate cosmological gamma-ray bursts by ~ 10-4.

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