{
  "submittedHow": "email",
  "createdOn": 1791778248661,
  "submitter": "Amy <yarleen@gmail.com>",
  "eventId": "GRB 261010A",
  "body": "S. D. Barthelmy (GSFC), R. Gupta (GSFC), H. A. Krimm (NSF), S. Laha\n(GSFC/UMBC), A. Y. Lien (U Tampa), C. B. Markwardt (GSFC), M. J. Moss\n(GSFC), D. M. Palmer (LANL), T. Parsotan (GSFC), D. Sadaula (GSFC/UMBC), T.\nSakamoto (AGU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-120 to T+662 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 261010A (trigger #1516528)\n(Lien et al., GCN Circ. 45889).  The BAT ground-calculated position is\nRA, Dec = 248.767, 26.600 deg which is\n   RA(J2000)  =  16h 35m 04.2s\n   Dec(J2000) = +26d 36' 01.3\"\nwith an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The\npartial coding was 83%.\n\nThe mask-weighted light curve shows a main pulse that starts and peaks at\n~T0 and ends at ~T+3 s. In addition, there are some weak emission that\nstarts prior to the main pulse at ~T-10 s and lasts till ~T+70 s. T90\n(15-350 keV) is 71.50 +- 14.07 sec (estimated error including systematics).\n\nThe time-averaged spectrum from T-9.28 to T+76.45 sec is best fit by a\nsimple power-law model.  The power law index of the time-averaged spectrum\nis 1.43 +- 0.17.  The fluence in the 15-150 keV band is 3.1 +- 0.4 x 10^-6\nerg/cm2. The 1-sec peak photon flux measured from T+0.26 sec in the 15-150\nkeV band is 3.6 +- 0.4 ph/cm2/sec.  All the quoted errors are at the 90%\nconfidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttps://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1516528\n\n(In memory of Scott Barthelmy, the BAT team dedicates the rest of our\ncirculars to Scott.)\n",
  "subject": "GRB 261010A: Swift-BAT refined analysis",
  "circularId": 45918
}