On the possible association of SN 1998bw and GRB 980425
Astronomical Institute "Anton Pannekoek"/CHEAF, Kruislaan 403, 1098 SJ, Amsterdam, The Netherlands
2 Physics Department, UAH, Huntsville, AL 35899, U.S.A.
3 Universities Space Research Association, U.S.A.
4 NASA Marshall Space Flight Center, ES-84, Huntsville, AL 35812, U.S.A.
5 ESO, Casilla 19001, Santiago 19, Chile
6 SRON Laboratory for Space Research, Sorbonnelaan 2, 3584 CA Utrecht, The Netherlands
7 Dept. of Physics and Astronomy, SUNY, Stony Brook, NY 11794-3800, U.S.A.
8 Istituto Tecnologie e Studio Radiazioni Extraterrestri, CNR, Bologna, Italy
Accepted: 4 May 1999
We here discuss the possibility that the peculiar supernova SN 1998bw and the Gamma-Ray Burst GRB 980425 are associated. If the two are related, the energy radiated in γ rays is at least four orders of magnitude less than in other GRBs, although its appearance is otherwise unremarkable: this suggests that very different mechanisms may give rise to GRBs.
Key words: gamma–rays: bursts / (stars:) supernovae: individual: SN 1998bw
© European Southern Observatory (ESO), 1999