Early Optical Afterglow from GRB 030418 and Progenitor Mass Loss

Details Early Optical Afterglow from GRB 030418 and Progenitor Mass Loss Early Optical Afterglow from GRB 030418 and Progenitor Mass Loss

Dec 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aas...20313201s&link_type=abstract

American Astronomical Society Meeting 203, #132.01; Bulletin of the American Astronomical Society, Vol. 35, p.1418

Other

1

Scientific paper

The ROTSE-IIIa telescope and the SSO-40 inch telescope, both located at Siding Spring Observatory, imaged the early time afterglow of GRB 030418. We detect optical emission that rises for ˜ 600 s, slowly varies around R=17.3 mag for ˜ 1400 s, and then fades as a power law of index α =-1.36. This early afterglow behavior is qualitatively different from other afterglows such as GRB 990123 and GRB 021211, and may explain why so few early afterglows have been observed. We find that a simplified model of an absorbed afterglow embedded in a dense wind environment describes the data more accurately than the expected curve caused by a break in a cooling synchrotron spectrum passing through the optical band. If absorption does determine the behavior of this early afterglow, it provides further evidence for the connection between gamma-ray bursts and the collapse of massive stars.

Affiliated with

Also associated with

No associations

Rating

Early Optical Afterglow from GRB 030418 and Progenitor Mass Loss does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Early Optical Afterglow from GRB 030418 and Progenitor Mass Loss, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Early Optical Afterglow from GRB 030418 and Progenitor Mass Loss will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1423399