Statistics – Methodology
Scientific paper
Jan 2010
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010aas...21540510c&link_type=abstract
American Astronomical Society, AAS Meeting #215, #405.10; Bulletin of the American Astronomical Society, Vol. 42, p.229
Statistics
Methodology
Scientific paper
The gamma-ray burst fireball model predicts that gamma-rays are emitted in a collimated jet while lower energy photons have a wider beam angle. This model makes a clear prediction that orphan optical afterglows (optical bursts without associated gamma rays) should exist, as the lower energy photons can be observed when the gamma-ray emission is not in the observer's line of sight. Several surveys in the past have attempted to locate orphan afterglows but these surveys were neither large enough nor had a faint enough limiting magnitude to expect to find a statistically significant number of orphan afterglows. The Sloan Digital Sky Survey Supernova Survey covered 300 square degrees of sky for three months over a three year period at an average cadence of about four days, with a limiting magitude of r 22. Using the procedure outlined in Totani & Panaitescu (2002), between 12-24 orphan afterglows are predicted for this survey.
This poster presents the methodology used to search for orphan afterglows in the SDSS Supernova Survey, preliminary orphan afterglow candidates, and refinements of the predicted number of afterglows based on the actual temporal coverage of the survey.
Clark M. J.
Holtzman Jon
McNamara Brian
No associations
LandOfFree
Searching for Optical Orphan Afterglows with SDSS 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 Searching for Optical Orphan Afterglows with SDSS, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Searching for Optical Orphan Afterglows with SDSS will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-964953