{
  "bibcode": "2010GCN.10906....1U",
  "body": "GRB 100625A: GROND confirmation of constant source\n\nA. Updike (Clemson University), P. Afonso and J. Greiner (both MPE\nGarching) report on behalf of the GROND team:\n\nWe observed the field of the short-hard GRB 100625A, discovered by\nSWIFT(Holland et al., GCN 10884), simultaneously in g'r'i'z'JHK with GROND\n(Greiner et al.2008, PASP 120, 405) mounted at the 2.2 m MPI/ESO telescope\nat La Silla Observatory (Chile).\n\nFirst epoch observations started at 06:13 UT on June 26, 10.7 hours\nafter the GRB trigger, lasting for about 1 hour and done at high air mass.\nWe took a second epoch starting at 09:29 UT on June 27 (~38 hrs after the\ntrigger), lasting also for about 1 hour and done at seeing of ~ 2''.\n\nWithin the enhanced XRT-position error circle (Good et al., GCN 10886)\nwe detect a faint object at a position compatible with the Gemini-South\ncandidate afterglow (Levan & Tanvir, GCN 10887).\n\nBased on stacked images with a total integration time of 49.6 min in\ng'r'i'z' and 40 min for JHK for each epoch, preliminary AB magnitudes\n(calibrated with GROND zero points) show that within the errors the object\nis constant between our two epochs.\n\nAs suggested by the Magellan observations (Berger et al., GCN 10897) our\nresults also point to the detection of a possible host galaxy.",
  "circularId": 10906,
  "createdOn": 1277820076000,
  "email": "pafonso@mpe.mpg.de",
  "subject": "GRB100625A: GROND confirmation of constant source",
  "submitter": "Paulo M. J. Afonso at MPE  <pafonso@mpe.mpg.de>",
  "eventId": "GRB 100625A"
}