The Temporal and Spectral Properties of the Swift UVOT GRB Catalog: The Gold Sample
Abstract
We present highlights of the second Swift Ultraviolet/Optical Telescope (UVOT) gamma-ray burst (GRB) afterglow catalog. This catalog covers GRBs occurring during the period from 2005 January 17 to 2010 December 31 and includes GRBs first detected by Swift, HETE2, INTEGRAL, IPN, and Fermi. Unlike the first UVOT GRB catalog, in this version of the catalog we use optimal co-addition and normalization of the colored data in order to produce detailed light curves. These detailed light curves allow the sample to be subdivided into `gold,’ `silver,’ and `bronze’ light curves thus allowing for a more thorough examination of the UV/optical properties of these bursts. An inspection of the gold sample reveals that more than 80% of the bursts manifest at least one break in the temporal slope. For the first time, a large sample of UV/optical spectral slopes is also provided.
- Publication:
-
AAS/High Energy Astrophysics Division #12
- Pub Date:
- September 2011
- Bibcode:
- 2011HEAD...12.0725R