GRB 200306C: Swift-BAT refined analysis
Abstract
Using the data set from T-240 to T+1065 sec from the recent telemetry downlink, we report further analysis of BAT GRB 200306C (trigger #960102) (Gropp et al., GCN Circ. 27326). The BAT ground-calculated position is RA, Dec = 198.577, 11.263 deg which is RA(J2000) = 13h 14m 18.6s Dec(J2000) = +11d 15' 47.7" with an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 42%. The mask-weighted light curve shows several overlapping pulses that start at ~T-12 s and end at ~T+50 s. T90 (15-350 keV) is 53.5 +- 12.8 sec (estimated error including systematics). The time-averaged spectrum from T-12.33 to T+50.70 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 0.83 +- 0.12. The fluence in the 15-150 keV band is 2.8 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+3.45 sec in the 15-150 keV band is 1.3 +- 0.3 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/960102/BA/
- Publication:
-
GRB Coordinates Network
- Pub Date:
- March 2020
- Bibcode:
- 2020GCN.27353....1S