{
  "bibcode": "2013GCN.15237....1P",
  "body": "A. Pozanenko (IKI), A. Volnova (IKI), B. Hafizov (UBAI), O. Burhonov\n(UBAI) report on behalf of larger GRB follow-up collaboration:\n\nWe continue observation of the afterglow  (Hagen et al., GCN  15139; \nGuidorzi et al., GCN 15140) of the Swift GRB 130831A (Hagen et al., GCN \n  15139)  with AZT-22 telescope equipped with SNUCAM at Maidanak \nobservatory. A preliminary photometry of combined images obtained on \nSep. 16 is following:\n\nT_start              T0+       Filter, Exposure, OT\n(UT)                 (mid, d)            (s)\n\n2013-09-16T19:00:13  16.28     R       14x300     22.77 +/- 0.07\n\nThe photometry is based on  SDSS stars (see GCN 15190).\n\nThis is brighter than we obtained on Sep. 9  (23.11 +/- 0.06) and  on \nSep. 15 (22.87 +/- 0.08). We suggest the observed re-brightening is an \nemerging Supernova associated with GRB 130831A.\n\nA preliminary lc of the afterglow+SN of GRB 130831A can be found in\nhttp://grb.rssi.ru/GRB130831A/grb130831A_lc_preliminary.PNG",
  "circularId": 15237,
  "createdOn": 1379765046000,
  "email": "apozanen@iki.rssi.ru",
  "subject": "GRB 130831A: Maidanak optical observations, possible emerging Supernova",
  "submitter": "Alexei Pozanenko at IKI, Moscow  <apozanen@iki.rssi.ru>",
  "eventId": "GRB 130831A"
}