GRB 200701A: Swift-BAT refined analysis
Abstract
Using the data set from T-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 200701A (trigger #980421) (Bernardini et al., GCN Circ. 28052). The BAT ground-calculated position is RA, Dec = 123.563, -14.553 deg which is RA(J2000) = 08h 14m 15.2s Dec(J2000) = -14d 33' 09.8" with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 77%. The mask-weighted light curve shows a single-pulse structure that starts at ~T-7 s and peaks at ~T0. The main pulse ends at ~T+20 s, followed by a weak tail that lasts till ~T+40 s. T90 (15-350 keV) is 38.9 +- 8.6 sec (estimated error including systematics). The time-averaged spectrum from T-6.81 to T+42.17 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.91 +- 0.16. The fluence in the 15-150 keV band is 9.3 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-1.72 sec in the 15-150 keV band is 0.7 +- 0.2 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/980421/BA/
- Publication:
-
GRB Coordinates Network
- Pub Date:
- July 2020
- Bibcode:
- 2020GCN.28054....1S