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GCN Circular 35467

Subject
GRB 240102A: LCOGT Optical Upper Limits
Date
2024-01-03T01:01:40Z (3 months ago)
From
Robert Strausbaugh at Eastern Illinois University <rstrausbaugh@eiu.edu>
Via
email
R. Strausbaugh (Eastern Illinois University), A. Cucchiara (NASA) report on
behalf of a larger collaboration:

We observed the Swift GRB 240102A (Gropp et al., GCN 35461) field with the LCOGT 1-meter Sinistro instrument at the Teide Observatory, Tenerife site, on January 2, from 23:34 to January 3 00:07 UT (corresponding to 6.00 to 6.55 hours after the GRB trigger time) with the sdss r and i filters.

We performed a series of 3x300s exposures in each band.  We do not detect an uncatalogued source within the XRT error region in either band.  This result is consistent with other optical upper limits (Hu et al., GCN 35465).

The following 5-sigma upper limits are calculated using the PanSTARRS catalog as reference:

r > 22.9
i > 22.3

These magnitudes are not corrected for galactic extinction.

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