GCN Circular 13937
Subject
GRB 121027A: sub-mm upper limit
Date
2012-11-01T15:32:19Z (12 years ago)
From
Jochen Greiner at MPI <jcg@mpe.mpg.de>
J. Greiner (MPE Garching), A. Belloche, T. Csengeri, F. Wyrowski
(all MPIfR Bonn), F. Schuller, F. Montenegro (both APEX, ESO),
V. Sudilovsky, J. Elliott (both MPE Garching),
D. A. Kann (MPE Garching/Universe Cluster),
A. de Ugarte Postigo (IAA-CSIC Granada/DARK Copenhagen),
T. Kruehler (DARK Copenhagen) report:
We observed the afterglow of the peculiar GRB 121027A (Starling et al. 2012,
GCN 13911; Levan et al. 2012, GCN 13920; Evans et al. 2012, GCN 13921) with
LABOCA/APEX at 870 micron. The observations in photometry mode started on
Oct. 31, 7:57 UT, 4.02 days after the Swift trigger (Evans et al. 2012,
GCN 13906, Barthelmy et al. 2012, GCN 13910). They were performed under
good weather conditions (pwv ~ 1 mm), and lasted for 1 hr.
No source is detected, down to a 3 sigma upper limit of 21 mJy/beam.