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Optical/X-ray Absorption Along Sight Lines to GRBs (lead by Nat Butler)
Recent work has shed light on the absorption properties of GRB host galaxies and potentially solved longstanding issues regarding an apparent discrepancy between absorption observed in the optical and X-ray bands. What does absorption along sight lines to GRBs tell us? What sort of dust is present? Is the material highly ionized, of unusual abundance, etc.? Is the material probed associated with the GRB or its host Galaxy? And what can this tell us about the progenitor environment and host galaxy?
- Recommended Reading:
- (Jakobsson et al. 2006): study of N(HI) absorptions for Swift GRBs at z>2
- (Watson et al. 2006): comparison study of X-ray N_H
- (Schady et al. 2006): optical/X-ray extinction fitting to get N_H and A_V
- Additional Reading (not required):
- (Galama & Wijers 2001): Classic paper, X-ray Afterglows have high N_H but low A_V
- (Stratta et al. 2004): Study of optical/X-ray absorption in 13 SAX GRBs
- (Watson et al. 2005): A nice comparison of optical/X-ray absorption for GRB050401
MASS: Paul Simeon