GRB 190613A, Swift-BAT refined analysis
Abstract
Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 190613A (trigger #908288) (Ambrosi et al., GCN Circ. 24798). The BAT ground-calculated position is RA, Dec = 182.552, 67.244 deg which is RA(J2000) = 12h 10m 12.5s Dec(J2000) = +67d 14' 39.7" with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 9%. The mask-weighted light curve shows a weak pulse that starts at ~T0, peaks at ~T+7 s, and ends at ~T+20 s. T90 (15-350 keV) is 17.6 +- 3.1 sec (estimated error including systematics). The time-averaged spectrum from T+0.6 to T+20.3 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.22 +- 0.26. The fluence in the 15-150 keV band is 1.7 +- 0.3 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+6.88 sec in the 15-150 keV band is 1.5 +- 0.7 ph/cm2/sec. All the quoted errors are at the 90% confidence level. The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/908288/BA/ [GCN OPS NOTE(13jun19): Per author's request, in the 3rd line "GCN Circ. 908288" was corrected to read "GCN Circ. 24798".
- Publication:
-
GRB Coordinates Network
- Pub Date:
- June 2019
- Bibcode:
- 2019GCN.24819....1S