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GCN Circular 13077

GRB 120320A: Gemini-N and UKIRT observations
2012-03-20T15:33:26Z (12 years ago)
Nial Tanvir at U.Leicester <>
A. J. Levan (U. Warwick), N. R. Tanvir (U. Leicester), T. Wold (JACH) and
R. Mason (Gemini) report on behalf of a larger collaboration:

We obtained observations of the field of GRB 120320A (Markwardt et al.
GCN13071) with both Gemini-N/GMOS in i and z, and UKIRT/WFCAM in J, H
and K. Our first observations began approximately 30 minutes after the burst,
and continued for a further 2 hours.

Within the refined X-ray error circle (Beardmore et al. GCN 13075) we detect a
very faint source in our GMOS imaging at position (accuracy ~0.5"):


The source has i~25.7+/-0.3 and z~25.3+/-0.3. It is undetected in the UKIRT
imaging to preliminary limits of J>21.6, H>20.0 and K>19.5.

This source could therefore be related to either the afterglow or the host galaxy of
GRB 120320A, but at the current time we cannot make any statements about fading.
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