TITLE: GCN CIRCULAR NUMBER: 14186 SUBJECT: GRB 130206A, Swift-BAT refined analysis DATE: 13/02/07 13:51:11 GMT FROM: Hans Krimm at NASA-GSFC M. Stamatikos (OSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), M. De Pasquale (UCL-MSSL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team): Using the data set from T-61 to T+242 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130206A (trigger #547918) (De Pasquale, et al., GCN Circ. 14181). The BAT ground-calculated position is RA, Dec = 140.387, -58.193 deg which is RA(J2000) = 09h 21m 32.9s Dec(J2000) = -58d 11' 35.6" with an uncertainty of 1.9 arcmin, (radius, sys+stat, 90% containment). The partial coding was 52%. The mask-weighted light curve shows two clusters of peaks. The first runs from approximately T-10 sec to T+15 sec and the second from T+20 sec to T+60 sec, though the count rate does not return to baseline between the two clusters. Each of these clusters consists of multiple sub-peaks. There is also some low-level emission extending out to T+150 sec. T90 (15-350 keV) is 128.0 +- 50.6 sec (estimated error including systematics). The time-averaged spectrum from -12.78 to 147.21 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.56 +- 0.17. The fluence in the 15-150 keV band is 2.0 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+42.72 sec in the 15-150 keV band is 0.3 +- 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/547918/BA/