GRB 090720***A***, Swift-BAT refined analysis
 
<somebody goes first>
<add the BA alphabetically>
S. D. Barthelmy (GSFC), 
J. R. Cummings (GSFC/UMBC),
N. Gehrels (GSFC),
H. A. Krimm (GSFC/USRA),
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-2 to T+8 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 090720***A*** (trigger #357811)
(NAME, et al., GCN Circ. xxxx).  The BAT ground-calculated position is
RA, Dec = 203.702, -10.339 deg which is 
   RA(J2000)  =  13h 34m 48.5s 
   Dec(J2000) = -10d -20' -20.4" 
with an uncertainty of 2.7 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 2%.
 
[Description about the mask-weighted light curve]
T90 (15-350 keV) is 4.8 +- 1.6 sec (estimated error including systematics).
 
This burst was outside the BAT calibrated field of view (the FLUX mask region)
in the whole event data range, hence spectral analysis is not available.
 
The results of the batgrbproduct analysis are available at
http://gcn.gsfc.nasa.gov/notices_s/357811/BA/