Skip to main content
Testing. You are viewing the public testing version of GCN. For the production version, go to https://gcn.nasa.gov.
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 22716

Subject
GRB 180512A: LT prompt observations
Date
2018-05-13T08:31:12Z (6 years ago)
From
Cristiano Guidorzi at Ferrara U,Italy <guidorzi@fe.infn.it>
C. Guidorzi, R. Martone (U. Ferrara), S. Kobayashi (LJMU), C.G. Mundell 
(U. Bath), A. Gomboc (U. Nova Gorica), I.A. Steele (LJMU) on behalf of a 
large collaboration report:

The 2-m Liverpool Telescope automatically began observing Swift GRB 
180512A (Deich et al. GCN 22710) on May 12, 22:07:15 UT (5.5 minutes 
since the GRB) with the RINGO3 polarimeter and the IO:O camera in the 
SDSS-R filter. Within the enhanced XRT error circle (Evans et al. GCN 
22715) we do not detect any optical counterpart down to the following 
magnitude:

Mid time since GRB�������� Exp�������������� Filter���������������� Magnitude
(hrs)���������������������������������� (s)
-----------------------------------------------------------
0.64���������������������������������� 6x10������������ SDSS-R������������������ > 20.8
-----------------------------------------------------------

as calibrated against nearby SDSS objects.
Looking for U.S. government information and services? Visit USA.gov