Saturday, February 05, 2005 2:51 PM Subject: GRB afterglow in the radio wave spectrum 1. Has anyone ever tried to follow up Gamma Ray Burst events in the Radio wave portion of the spectrum in real time?
Answer provided by Dale Frail (NRAO): Many radio observations have been done of the afterglows of GRBs. The radio emission comes from the same shock that gives rise to the optical and X-ray emission but the radio reaches peak brightness 5-10 days after the burst. This “afterglow” emission is associated with the synchrotron emission from shocked electrons in the jet. (Synchrotron emission is light emitted due to the acceleration of the electrons by strong magnetic fields.) At early times, the shocked fireball is too small to produce significant radio emission. It is only when the shock expands that the radio gets bright enough to detect.
Related Questions
- Saturday, February 05, 2005 2:51 PM Subject: GRB afterglow in the radio wave spectrum 1. Has anyone ever tried to follow up Gamma Ray Burst events in the Radio wave portion of the spectrum in real time?
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