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GCN Circular 17000

GRB 141031B: Nanshan optical upper limit
2014-10-31T16:33:01Z (10 years ago)
Dong Xu at DARK/NBI <>
D. Xu (DARK/NBI), C.-H. Bai, T.-Z. Yang, A. Esamdin, L. Ma (XAO) report:

We observed the field of GRB 141031B (Gompertz et al., GCN 16998),
using the 1m telescope located at Nanshan, Xinjiang, China. We
obtained 2x300s and 1x600s R-band images, starting at 16:02:08 UT on
2014-10-31 (i.e., 1.090 hr after the burst).

No optical source is detected at the XRT position (R.A.=23:47:37.24,
Dec.=+41:21:07.7, Err. Rad.=2.4"), down to a limiting magnitude of
R=20.6 mag.
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