{
  "body": "S. Laha (GSFC/UMBC), S. D. Barthelmy (GSFC),\nR. Gupta (GSFC), H. A. Krimm (NSF),\nA. Y. Lien (U Tampa), C. B. Markwardt (GSFC),\nM. J. Moss (GSFC), D. M. Palmer (LANL),\nT. Parsotan (GSFC), D. Sadaula (GSFC/UMBC),\nT. Sakamoto (AGU) (i.e. the Swift-BAT team):\n\nUsing the data set from T-200 to T+200 sec from the recent telemetry\ndownlink, we report further analysis of BAT GRB 240516A (trigger #1228797)\n(Parsotan et al., GCN Circ. 36493).  The BAT ground-calculated position is\nRA, Dec = 212.784, -63.495 deg which is\n   RA(J2000)  =  14h 11m 08.3s\n   Dec(J2000) = -63d 29' 41.7\"\nwith an uncertainty of 1.6 arcmin, (radius, sys+stat, 90% containment).\nThe partial coding was 45%.\n\nThe mask-weighted light curve shows a single-peaked, FRED-like structure\nthat starts at ~T-5 s, peaks at ~T-2 s, and ends at ~T+15 s. In addition,\nthere are some weak tail emissions that last till ~T+110 s.\nT90 (15-350 keV) is 94.69 +- 34.00 sec (estimated error including\nsystematics).\n\nThe time-averaged spectrum from T-4.75 to T+112.50 sec is best fit by\na simple power-law model.  The power law index of the time-averaged\nspectrum is 1.09 +- 0.19.  The fluence in the 15-150 keV band\nis 2.0 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured\nfrom T-2.20 sec in the 15-150 keV band is 1.1 +- 0.3 ph/cm2/sec.\nAll the quoted errors are at the 90% confidence level.\n\nThe results of the batgrbproduct analysis are available at\nhttps://swift.gsfc.nasa.gov/results/batgrbcat/BAT_refined_circular/1228797\n",
  "circularId": 36510,
  "subject": "GRB 240516A: Swift-BAT refined analysis",
  "bibcode": "2024GCN.36510....1L",
  "createdOn": 1715982350907,
  "eventId": "GRB 240516A",
  "submitter": "Amy <yarleen@gmail.com>",
  "submittedHow": "email"
}