Optical follow-up of GRB970508

Details Optical follow-up of GRB970508 Optical follow-up of GRB970508

May 1998

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998aipc..428..499g&link_type=abstract

Fourth Huntsville gamma-ray burst symposium. AIP Conference Proceedings, Volume 428, pp. 499-503 (1998).

Physics

Gamma-Ray Sources, Gamma-Ray Bursts, Visible

Scientific paper

We report on the results of optical follow-up observations of the counterpart of GRB970508 between 7 hours and 100 days after the event. Multi-colour U, B, V, Rc and Ic band observations were obtained during the first three consecutive nights. The Rc light curve rises to a maximum 1.8 days after the burst and after this declines with a power law decay, the exponent of which is α=-1.21+/-0.01. Superposed on this power law decay, we detect small amplitude (<0.5 magnitude) variations on timescales as short as half a day. The optical energy distribution can be well represented by a power law, the slope of which became steeper during the rise to maximum light and stayed constant afterwards.

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