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GCN Circular 11583

GRB 110119A: PAIRITEL NIR Afterglow Detection
2011-01-20T03:43:24Z (13 years ago)
Adam Morgan at U.C. Berkeley <>
A. N. Morgan, C. R. Klein, and J. S. Bloom (UC Berkeley) report:

We observed the field of GRB 110119A (Troja et al., GCN 11581) with the 1.3m
PAIRITEL located at Mt. Hopkins, Arizona. Observations began at 2011-Jan-20
01h24m08s UT, ~3.1 hours after the Swift Trigger, under high airmass (~1.9),
and continued until the source set beyond telescope limits.  In  mosaics
(effective exposure time of 0.64 hours) taken simultaneously in the J, H,
and Ks filters, we detect a source at the UVOT position (Troja et al., GCN

The preliminary photometry yields:

post burst
t_mid (hr) exp.(hr) filt  mag   m_err
3.78       0.64     J     17.9  0.2
3.78       0.64     H     17.0  0.2
3.78       0.64     Ks    16.2  0.2

All magnitudes are given in the Vega system, calibrated to 2MASS. No
correction for Galactic extinction has been made to the above reported
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