GCN Circular 13458
Subject
GRB 120712A Gemini-S redshift
Date
2012-07-13T01:17:34Z (12 years ago)
From
Nial Tanvir at U.Leicester <nrt3@star.le.ac.uk>
N. R. Tanvir (U. Leicester), A. J. Levan (U. Warwick) and D. Krogsrud (Gemini)
report on behalf of a larger collaboration:
We observed the afterglow of GRB 120712A (Page et al. GCN 12454;
using the GMOS-S spectrograph on Gemini-South in good conditions.
Observations began at 2012-7-12 23:43 UT, about 10 hr post-burst.
The spectrum reveals a clear Ly-a break, and many other absorption
features. A provisional reduction gives a redshift of z=4.15, although
this figure will be refined with better calibration.