Donald Q. Lamb
Published 2001-07-28Version 1
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.
Comments: To appear in Procs. of Gamma-Ray Bursts in the Afterglow Era: 2nd Workshop, 3 pages, 2 figures, LaTeX
The Role of Dust in GRB Afterglows
A catalog of optical/near-infrared data on GRB afterglows in the pre-Swift era. I. Light curve information
Identifying the Environment and Redshift of GRB Afterglows from the Time-Dependence of Their Absorption Spectra
