{
  "bibcode": "2007GCN..6836....1G",
  "body": "J. F. Graham (STScI/JHU), A. S. Fruchter (STScI), A. J. Levan (U. \nWarwick), M. Nysewander (STScI), N. R. Tanvir (U. Leicester), T. Dahlen \n(STScI), D. Bersier (Liverpool John Moores U.), A. Pe'er (STScI) report \non behalf of a larger collaboration:\n\nGemini Nod & Shuffle spectroscopy on the host of GRB 070714B shows a \nsingle emission line at 7165 A.  A photometric redshift based on Gemini \ngrizJHK observations with GMOS and NIRI strongly implies that this is \nthe 3727 A [O II] line.  This places the host at a redshift of z=.92\n\nThe Swift BAT discovery data show the burst to have had a short, hard \nmain component of three seconds duration followed by a soft, longer \nduration tail (Sakamoto et al. GCN 6623).  The main component also shows \na small spectral lag (Norris et al. GCN 6631).  Both of these \nobservations are consistent with GRB 070714B being a short GRB.  This \nthen would be the highest spectroscopically confirmed redshift of a \nshort burst.\n\nThe observed fluence of 7.2 x 10^-7 erg/cm^2 (Barbier et al. GCN 6638) \nat a redshift of z=.92 corresponds to an isotropic energy release of \nEiso = 1.6 x 10^51 erg.",
  "circularId": 6836,
  "createdOn": 1191285385000,
  "email": "graham@stsci.edu",
  "subject": "GRB 070714B: host galaxy spectroscopic redshift",
  "submitter": "John Graham at STScI  <graham@stsci.edu>",
  "eventId": "GRB 070714B"
}