Sloan Digital Sky Survey Multicolor Observations of GRB010222

Abstract

The discovery of an optical counterpart to GRB010222 (detected by BeppoSAX; Piro 2001) was announced 4.4 hrs after the burst by Henden (2001a). The Sloan Digital Sky Survey's 0.5m photometric telescope (PT) and 2.5m survey telescope were used to observe the afterglow of GRB010222 starting 4.8 hours after the GRB. The 0.5m PT observed the afterglow in five, 300 sec g' band exposures over the course of half an hour, measuring a temporal decay rate in this short period of F_nu \propto t^{-1.0+/-0.5}. The 2.5m camera imaged the counterpart nearly simultaneously in five filters (u' g' r' i' z'), with r' = 18.74+/-0.02 at 12:10 UT. These multicolor observations, corrected for reddening and the afterglow's temporal decay, are well fit by the power-law F_nu \propto nu^{-0.90+/-0.03} with the exception of the u' band UV flux which is 20% below this slope. We examine possible interpretations of this spectral shape, including source extinction in a star forming region.

arXiv comment8 pages, 4 figures, accepted for publication in ApJ. Two figures added, minor changes to text in this draft. Related material can be found at: http://sdss.fnal.gov:8000/grb/

References in corpus (15)

• Maps of Dust IR Emission for Use in Estimation of Reddening and CMBR Foregrounds
• The Sloan Digital Sky Survey: Technical Summary
• Spectra and Light Curves of Gamma-Ray Burst Afterglows
• The Sloan Digital Sky Survey Photometric Camera
• Jets in GRBs
• Observation of contemporaneous optical radiation from a gamma-ray burst
• The Fourth BATSE Gamma-Ray Burst Catalog (Revised)
• Dust sublimation by GRBs and its implications
• High column densities and low extinctions of gamma-ray bursts: Evidence for hypernovae and dust destruction
• The Rapid Decay of the Optical Emission from GRB 980326 and its Possible Implications
• Multi-Color Observations of the GRB000926 Afterglow
• GRB010222: afterglow emission from a rapidly decelerating shock
• The Redshift of the Optical Transient Associated with GRB 010222
• Rapid UBVRI Follow-up of the Highly Collimated Optical Afterglow of GRB010222
• H_2 Absorption and Fluorescence for Gamma Ray Bursts in Molecular Clouds

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