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GCN Circular 15535

GRB 131128A: Nanshan afterglow candidate
2013-11-28T15:49:12Z (10 years ago)
Dong Xu at DARK/NBI <>
D. Xu (DARK/NBI), H.-B. Niu, J.-Z. Liu, G.-J. Feng, C.-H. Bai, A.
Esamdin, L. Ma (XAO) report:

We observed the fields of GRB 131128A (Sonbas et al., GCN 15533),
using the 1m telescope located on Mt. Nanshan, Xinjiang, China.
Observations started 880s after the Swift trigger and a series of
R-band frames were obtained.

An optical source is clearly detected at coordinates:

R.A. (J2000) = 23:41:13.75
Dec.(J2000) = +31:18:23.14

Error Radius: ~1 arcsec

which is consistent with the SPER XRT position of this burst
(, thus it's likely the afterglow of the

Note that there is a very bright star (r=14.76 mag from SDSS) just a
few arcsec away from this optical transient. Observations are ongoing.
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