{
  "bibcode": "2007GCN..6529....1N",
  "body": "J.P. Norris (U.Denver), S.D. Barthelmy (GSFC), N. Gehrels (GSFC):\n\nSpectral lag analysis of the two main emission episodes in GRB 070612A,\ndescribed in GCN Circ. 6522 (Barthelmy et al.) indicate that this burst\nhas relatively long lags, comparable to and longer than that of GRB 980425\n(~ 2-3 s), the first burst associated with a supernova.\n\nFor the first, brighter FRED-like pulse structure, the lag measurement\nbetween BAT energy bands 15-25 keV and 50-100 keV (25-50 and 100-350 keV)\nis 2.5 s +2.1-1.8 s (2.5 +0.7-0.5 s).\n\nFor the second, dimmer pulse structure, the 15-25 keV to 50-100 keV\nlag is 5.8 s +2.6-1.9 s.  The flux in the 100-350 keV band for this\nsecond episode was too low to make a useful measurement.\n\nSpectral lags of several seconds indicate a relatively low luminosity\nburst, consistent with the nearby host (z ~ 0.1) described in GCN Circ.\n6525 (Cenko et al.).",
  "circularId": 6529,
  "createdOn": 1181762901000,
  "email": "jpnorris@stanford.edu",
  "subject": "GRB 070612A:  spectral lag",
  "submitter": "Jay Norris at Stanford U  <jpnorris@stanford.edu>",
  "eventId": "GRB 070612A"
}