Hypernovae and gamma ray bursts

Details Hypernovae and gamma ray bursts Hypernovae and gamma ray bursts

Oct 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001aipc..586..478m&link_type=abstract

RELATIVISTIC ASTROPHYSICS: 20th Texas Symposium. AIP Conference Proceedings, Volume 586, pp. 478-483 (2001).

Astronomy and Astrophysics

Astrophysics

1

Gamma-Ray Sources, Gamma-Ray Bursts, Supernovae, Jets And Bursts, Galactic Winds And Fountains

Scientific paper

The properties of the very energetic Type Ic SNe 1997ef and 1998bw, the latter probably connected to GRB980425, are reviewed. It is shown that the SNe have explosion kinetic energies well in excess of normal SNe, hence they are called ``Hypernovae.'' Evidence for asymmetry in the ejecta of SN 1998bw is discussed, and the results of a 2D calculation of an axisymmetric explosion are presented. The nebular line profiles of SN 1998bw computed assuming an axisymmetric explosion viewed from a direction close to that of the jet are shown to reproduce the observed profiles. .

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