GCN Circular 15628

Subject

GRB 131229A: P60 nondetection

Event

Date

2013-12-29T07:15:30Z (12 years ago)

From

Daniel Perley at Caltech <dperley@astro.caltech.edu>

D. A. Perley (Caltech) reports on behalf of a larger collaboration:

The robotic Palomar 60-inch telescope automatically responded to GRB 
131229A (Page et al., GCN 15627Loading...
 
 ) and began a sequence of 60-second image 
starting at 06:44:54 UT, 5.5 minutes after the burst.

In the initial r-band image we identify no sources within the XRT error 
circle down to a limiting magnitude of R > 20.5.  No source in the error 
circle is detected in the i- or z-band filters either.

We do detect a source not present in USNO B1.0 well north of the XRT 
error circle at RA=05:40:55.702, dec=-04:23:21.11 (J2000).  It does not 
appear to be fading in images taken so far.

Further P60 observations are ongoing.  NIR observations are encouraged.

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