Gamma Ray Bursts are very powerful events that occur all over our universe which unleash unbelievable amounts of energy in a very short time scale, mostly in the form of Gamma Rays. Following the initial burst the output spectrum fades into the X-Ray and eventually the optical portion of the spectrum. There have been and still are a number of satellites monitoring for GRB events. Professional and amateur astronomers have been searching for what are know as optical afterglows and have had some success at it. Some SID observers have also been trying to detect the effects of GRBs with their equipment since the X-Ray portion of these events will have the same effect as a solar flares' X-Ray emission. The AAVSO SID program does not track this activity but observers who want to pursue this avenue are encouraged to do so. The following are some general links to some related information. There are other references available on the web if you search on Gamma Ray Bursts but these here will provide a starting point for you if you are interested in trying to catch a GRB with your SID monitoring equipment.

AAVSO GRB Page
SID/GRB Bulletin
SID Detected GRB