Near Infrared monitoring of the afterglow of the very bright Swift burst GRB 050525

Details Near Infrared monitoring of the afterglow of the very bright Swift burst GRB 050525 Near Infrared monitoring of the afterglow of the very bright Swift burst GRB 050525

May 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..836..333s&link_type=abstract

GAMMA-RAY BURSTS IN THE SWIFT ERA: Sixteenth Maryland Astrophysics Conference. AIP Conference Proceedings, Volume 836, pp. 333-

Astronomy and Astrophysics

Astrophysics

Gamma-Ray Sources, Gamma-Ray Bursts, Near Infrared

Scientific paper

We present the results from an extended monitoring of GRB 050525a taken minutes after the trigger time with the robotic telescope TAROT (Klotz et al. 2005) and more than one day later with the infrared camera WIRCam mounted on the 3.6-mt Canadian French Hawaii Telescope. A re-brightening feature was detected 33 minutes after the burst by TAROT. Together with GRB 021004 and GRB 050319, this is the third burst that shows an optical rebrightening in the rest-frame time interval of 0.01-0.02 days after the burst. We found no evidence of spectral variability before the re-brightening. The late times infrared data are nicely consistent with the expected power law decay with slope -1.6 derived from previous near infrared observations.

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