{
  "bibcode": "2014GCN.16252....1V",
  "body": "K. Varela, C. Delvaux, and J. Greiner (all MPE Garching) report on behalf of\nthe GROND team:\n\nWe re-observed the field of GRB 140428A (Swift trigger 597519; Kocevski et\nal.,\nGCN #16177) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008,\nPASP 120, 405) mounted at the 2.2 m MPG telescope at La Silla Observatory\n(Chile).\n\nA second epoch obtained on May 6th at 02:01 UT, about 7 days after the\ntrigger,\nshows that the source reported by Knust et al. (GCN # 16191) has clearly\nfaded.\nWe find z' > 23.3, suggesting that the source has faded by at least 1.9 mag,\nand confirming that this was the afterglow of GRB 140428A.",
  "circularId": 16252,
  "createdOn": 1399928718000,
  "email": "kvarela@mpe.mpg.de",
  "subject": "GRB 140428A: GROND afterglow confirmation",
  "submitter": "Karla Varela at MPE  <kvarela@mpe.mpg.de>",
  "eventId": "GRB 140428A"
}