THE GAMMA-RAY SN OBSERVATIONS PAGE



Pre-GRO




SN1987a

SN1987a was the closest observed with modern instruments, in the LMC.
SN Type: _____
Ni-56 Gamma Rays were detected ___ days after explosion

Refs: ____Conference Proceedings, ____Gro Conference Proceedings.



The GRO Era



SN1991T

Ni 56 Gammas detected by Comptel (?)


1.3 +- 0.5 Msolar Ni-56 estimated
Ref: Dan Morris, announced at Tucson AAS meeting
OSSE made no detection (Ref: Personal comm. )!

SN1993J

Gammas from SN?

Gammas probably came from interactions of shock front with ISM, not NI-56 synthesis. BRUCE PLEASE UPDATE: I forget whether there was spectral information, or the timing of the gammas. In M81=NGC3031 Explosion ~ Mar 23 1993
Refs: Leising et al. ApJ 431, L95