{
  "bibcode": "2010GCN.11299....1K",
  "body": "D. A. Kann (TLS Tautenburg) speculates:\n\nGRB 100925A (Mangano et al., GCN 11296) is a very peculiar event. It was\nan extremely long image trigger (1592 seconds), yet, after slewing to it,\nSwift discovered that the X-ray afterglow is still bright. Furthermore,\nlooking at the Swift XRT repository page (Evans et al. 2007, 2009)\n(http://www.swift.ac.uk/xrt_curves/00434928/) the source remains\nconstantly bright over almost 9000 seconds (two orbits).\n\nInspection of the DSS images of this field, using the position of the\nbright UVOT transient (Marshall, GCN 11298), shows that there is what\nseems to be an extended source a few arcseconds to the west (R.A.:\n16:59:01.501; Dec.: -15:15:28.76 according to the native DSS WCS system).\nIt is clearly detected in the red frame, and more marginally in the IR\nframe (DSS blue or SDSS are not available for this field). There are also\nsome stars nearby, but at much larger separation (> 10 arcsec). There is\nno source directly beneath the UVOT position.\n\nWhile the initial properties are reminiscent of two local XRFs associated\nwith broadlined Type Ic SNe, namely XRF 060218 (Campana et al. 2006) and\nXRF 100316D (Starling et al. 2010) (the nearby DSS source being the host\ngalaxy), the continuing strong X-ray emission as well as the position near\nthe Galactic bulge (Galactic longitude 5.52, Galactic latitude 16.56) may\nalso point to a new Galactic source.\n\nSpectroscopic follow-up is encouraged.\n\nThis message may be cited.",
  "circularId": 11299,
  "createdOn": 1285422924000,
  "email": "kann@tls-tautenburg.de",
  "subject": "GRB 100925A: Nearby DSS Source - SN-GRB or new Galactic transient?",
  "submitter": "Alexander Kann at TLS Tautenburg  <kann@tls-tautenburg.de>",
  "eventId": "GRB 100925A"
}