GCN Circular 9628
Subject
GRB 090709: PAIRITEL NIR Upper Limits
Event
Date
2009-07-09T08:58:46Z (16 years ago)
From
Adam Morgan at U.C. Berkeley <qmorgan@gmail.com>
A. N. Morgan, C. R. Klein, D. A. Perley, J. S. Bloom, (UC Berkeley), report:
We observed the field of GRB 090709 (Morris et al., GCN 9625) with the
1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at
2009-07-09 07:40:22 UT, ~108 seconds after the Swift trigger. In
preliminary mosaics (effective exposure time of ~374 seconds) taken
simultaneously in the J, H, and Ks filters, we detect no source at the
XRT position.
The preliminary photometry yields:
post_burst
t_mid(s) exp(s) filt U. Limit (3 sig)
438 374 J > 17.7
438 374 H > 16.9
438 374 Ks > 15.3
All magnitudes given in the Vega system, calibrated to 2MASS. No
correction for Galactic extinction has been made to the above reported
values. Observations are ongoing.
[GCN OPS NOTE(09jul09): Per author's request, in the Subject line
the "090609" was changed to "090709".]