{
  "bibcode": "2012GCN.13841....1B",
  "body": "GRB 120804A: Late-time Chandra observation \n\nDavid N. Burrows (PSU), Bin-Bin Zhang (PSU) and Eleonora Troja\n(NASA/GSFC/UMCP) report:\n\nWe re-observed the field of GRB 120804A (Lien et al., GCN Circ. 13573)\nwith the Chandra ACIS instrument, starting on September 18, 2012 \n16:04:50 UT (~46 days after the GRB trigger), for a total exposure of \n60 ks. The X-ray afterglow is clearly detected at the 10 sigma level.  \nThe inferred flux is consistent with an extrapolation of \nthe earlier Swift XRT observations (Troja et al., GCN Circ. 13640) and the \nXMM observation (Margutti et al. (GCN Circ. 13715), and shows a \ncontinuing decline in flux with a power-law decay slope of ~1.0 and \nno evidence for a jet break, consistent with Berger et al. (arXiv:1209:5423).  \n\nWe thank Dan Schwartz  and the entire Chandra staff for \nrapidly executing this observation.",
  "circularId": 13841,
  "createdOn": 1349373375000,
  "email": "dnburrows@gmail.com",
  "subject": "GRB 120804A: Late-time Chandra observation",
  "submitter": "David Burrows at PSU/Swift  <dnburrows@gmail.com>",
  "eventId": "GRB 120804A"
}