Photometric Analysis of the PAIRITEL Infrared Observations of Early Time Gamma Ray Burst Afterglows

Details Photometric Analysis of the PAIRITEL Infrared Observations of Early Time Gamma Ray Burst Afterglows Photometric Analysis of the PAIRITEL Infrared Observations of Early Time Gamma Ray Burst Afterglows

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21914204c&link_type=abstract

American Astronomical Society, AAS Meeting #219, #142.04

Astronomy and Astrophysics

Astronomy

Scientific paper

Since continuous operations began in 2004, the Peters Automated Infrared Imaging Telescope (PAIRITEL) has autonomously observed over 150 Swift GRBs within 24 hours of the trigger, including 16 in under 4 minutes of the trigger. Using improved pipelines, we have systematically re-reduced and photometered all observed events under 30 minutes of the trigger (20 bursts), yielding a homogenous sample of early-time JHKs lightcurves. Of the 20 bursts in our sample, 15 events have full-color light curves. Of the remaining bursts, 2 events are detected in at least one band and upper limits of the afterglow magnitude were obtained for the remainder of the set. We present an analysis of the results, showing IR magnitude/color distributions at fixed observer rest frame times since the trigger.

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