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