Gamma-Ray Bursts (GRBs)
Short (~ a few s), bright bursts of
gamma-rays
Later discovered with
X-ray and optical afterglows lasting several hours – a few days
GRB of May 10, 1999: 1 day after the GRB
2 days after the GRB
Many have now been
associated with host galaxies at large (cosmological) distances.
Probably related to the
deaths of very massive (> 25 Msun) stars.
