GRB 210211A: Swift-BAT refined analysis
Abstract
Using the data set from T-240 to T+600 sec from the recent telemetry downlink, we report further analysis of BAT GRB 210211A (trigger #1032024) (Troja, et al., GCN Circ. 29472). The BAT ground-calculated position is RA, Dec = 269.408, -46.270 deg which is RA(J2000) = 17h 57m 38.0s Dec(J2000) = -46d 16' 11.0" with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows a single broad peak starting at T-1 sec, and decaying to background by T+8 sec. T90 (15-350 keV) is 6.1 +- 0.6 sec (estimated error including systematics). The time-averaged spectrum from T-0.70 to T+5.90 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.09 +- 0.16. The fluence in the 15-150 keV band is 4.2 +- 0.4 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+4.28 sec in the 15-150 keV band is 1.0 +- 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/1032024/BA/
- Publication:
-
GRB Coordinates Network
- Pub Date:
- February 2021
- Bibcode:
- 2021GCN.29483....1M