The Role of Dust in GRB Afterglows

Details The Role of Dust in GRB Afterglows The Role of Dust in GRB Afterglows

2001-07-28

arxiv.org/abs/astro-ph/0107551v1

Astronomy and Astrophysics

Astrophysics

To appear in Procs. of Gamma-Ray Bursts in the Afterglow Era: 2nd Workshop, 3 pages, 2 figures, LaTeX

Scientific paper

10.1007/10853853_79

We show that the clumpy structure of star-forming regions can naturally explain the fact that 50-70% of GRB afterglows are optical``dark.'' We also show that dust echos from the GRB and its afterglow, produced by the clumpy structure of the star-forming region in which the GRB occurs, can lead to temporal variability and peaks in the NIR, optical, and UV lightcurves of GRB afterglows.

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