Two more years of GRB optical afterglows

Details Two more years of GRB optical afterglows Two more years of GRB optical afterglows

2003-01-31

arxiv.org/abs/astro-ph/0301644v2

Astronomy and Astrophysics

Astrophysics

6 pages, 2 figures, solicited talk at the Rome 2002 GRB workshop; typo corrected in the text

Scientific paper

I review the main observational achievements concerning GRB optical afterglows occurred in the past two years. Their emission seems to be well interpreted in terms of the `fireball' model, although a variety of behaviours are observed. Evidence for supernova-like late time `bumps' in the optical light curves is growing; however, other interpretations are possible. Fast follow-up observations allowed the detection of faint optical afterglows, and seem to suggest that a fraction of the so-called `dark' bursts might actually be re-classified as `dim' GRBs. Perspectives for future observations in this field are also outlined.

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