GRB 200205***A***: Swift-BAT refined analysis
 
<somebody goes first>
<add the BA alphabetically>
S. D. Barthelmy (GSFC), 
J. R. Cummings (CPI),
H. A. Krimm (NSF),
S. Laha (GSFC/UMBC),
A. Y. Lien (GSFC/UMBC),
C. B. Markwardt (GSFC),
D. M. Palmer (LANL),
T. Sakamoto (AGU),
M. Stamatikos (OSU),
T. N. Ukwatta (LANL)
(i.e. the Swift-BAT team):
 
Using the data set from T-239 to T+255 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 200205***A*** (trigger #954304)
(NAME, et al., GCN Circ. xxxx).  The BAT ground-calculated position is
RA, Dec = 130.168, -35.275 deg which is 
   RA(J2000)  =  08h 40m 40.4s 
   Dec(J2000) = -35d 16' 30.9" 
with an uncertainty of 3.0 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 94%.
 
[Description about the mask-weighted light curve]
T90 (15-350 keV) is 198.83 +- 17.00 sec (estimated error including systematics).
 
The time-averaged spectrum from TTBD to TTBD sec is best fit by a power law
with an exponential cutoff.  This fit gives a photon index 0.84 +- 0.91, 
and Epeak of 31.5 +- 8.4 keV (chi squared 67.17 for 56 d.o.f.).  For this
model the total fluence in the 15-150 keV band is 1.3 +- 0.1 x 10^-06 erg/cm2
and the 1-sec peak flux measured from T-81.90 sec in the 15-150 keV band is
0.3 +- 0.2 ph/cm2/sec.  A fit to a simple power law gives a photon index
of 2.26 +- 0.17 (chi squared 77.17 for 57 d.o.f.).  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/954304/BA/