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

GCN Circular 15518

GRB 131127A: Nanshan optical upper limit
2013-11-27T12:33:21Z (11 years ago)
Dong Xu at DARK/NBI <>
D. Xu (DARK/NBI), J.-Z. Liu, G.-J. Feng, H.-B. Niu, C.-H. Bai, A.
Esamdin, L. Ma (XAO) report:

We observed the field of GRB 131127A (Markwardt et al., GCN 15516)
using 1m telescope located on Mt. Nanshan, Xinjiang, China.
Observations started at 11:45:12 UT on 2013-11-27 (i.e., 1.56 hr after
the BAT trigger) and a series of R-band frames were obtained.

Within the SPER XRT error circle ( of
this burst, no crediable optical source is detected down to a limiting
magnitude of R=20.5 mag, calibrated with nearby USNO B1 field.
Looking for U.S. government information and services? Visit