{
  "bibcode": "2016GCN.19579....1K",
  "body": "D. A. Kann (TLS Tautenburg) speculates:\n\nSwift just triggered on GRB 160625A (Swift Trigger 701503, Maselli et al.,\nGCN #19577). They reported several rather small peaks followed by very\nstrong emission ca. three minutes later.\n\nThis burst is seen to be extremely powerful in INTEGRAL SPI ACS and CALET\nGBM. It seems to have begun with a short spike at about the same time as\nthe Swift BAT trigger (Fermi GBM trigger 488587220).\n\nThree minutes later, Fermi LAT sent out a flight position at:\n\nRA = 308.267\nDec. = +6.900\n\nwith an error of 0.5 degrees.\n\nThis position differs very strongly from the Swift BAT position. (Dec. of\n-65!)\n\nAdditionally, Swift BAT has recently slewed to the BAT position and found\na faint X-ray afterglow (Burrows et al., GCN 19578), which is in contrast\nto the very bright one one would expect from the extreme burst seen by\nINTEGRAL and CALET.\n\nI suggest that these are two different events, with the bright GRB seen\nthrough side of the Swift spacecraft.\n\nThe Fermi LAT position is affected by a relatively low amount of\nextinction (E_(B-V)=0.1), in contrast to the Swift position (E_(B-V)=1.3).\n\nI strongly urge observations of the LAT position by Swift to determine an\nXRT position, and by optical observatories as well. Judging from the\nINTEGRAL SPI ACS light curve, this GRB is of similar intensity to GRB\n160623A.",
  "circularId": 19579,
  "createdOn": 1466899291000,
  "email": "kann@tls-tautenburg.de",
  "subject": "GRB 160625A - two different events?",
  "submitter": "Alexander Kann at TLS Tautenburg  <kann@tls-tautenburg.de>",
  "eventId": "GRB 160625A"
}