GRB080822B

This page lists all entries on GRB080822B in GRBweb

Summary IPN Swift GCN 8117 GCN 8123 GCN 8128

Summary table
Variable Value Source
T0 21:02:52 UTC GCN_circulars,Swift Det
ra 63.5600° Swift
decl 25.7600° Swift
pos_error 2.80e-02° Swift
T90 64.0 s Swift
T90_start 21:02:52 UTC Swift
fluence 1.70e-07 erg/cm² Swift
T100 64.0 s
GBM_located False
mjd 54700.87699074074 GCN_circulars,Swift Det
IPN table
GRB_name GRB080822B
ra 63.4958°
decl 25.7500°
pos_error 5.00e-02°
Swift table
GRB_name GRB080822B
t_trigger 21:02:52 UTC
ra 63.5600°
decl 25.7600°
pos_error 2.80e-02°
T90 64.0 s
fluence 1.70e-07 erg/cm²
GCN 8117 table
GRB_name GRB080822B
GCN_number 8117
Detection_method Swift Det
t_trigger 21:02:52 UTC
ra 63.4950°
decl 25.7430°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8117 SUBJECT: GRB 080822B: Swift detection of a burst DATE: 08/08/22 21:27:55 GMT FROM: Scott Barthelmy at NASA/GSFC S. T. Holland (CRESST/USRA/GSFC), S. D. Barthelmy (GSFC), J. R. Cummings (NASA/UMBC), V. Mangano (INAF-IASFPA), F. E. Marshall (NASA/GSFC), C. Pagani (PSU), D. M. Palmer (LANL), M. Perri (ASDC), B. Preger (ASDC), R. L. C. Starling (U Leicester) and G. Stratta (ASDC) report on behalf of the Swift Team: At 21:02:52 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 080822B (trigger=321376). Swift did not slew to this burst because of the Moon observing constraint. It will come out of Moon constraint early 26 Aug 08 UT. The BAT on-board calculated location is RA, Dec 63.495, +25.743, which is RA(J2000) = 04h 13m 59s Dec(J2000) = +25d 44' 34" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT TDRSS light curve does not show anything significant which is typical for an image trigger. Burst Advocate for this burst is S. T. Holland (sholland AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.) [GCN OPS NOTE(22aug08): Per author's request, the missing "B" suffix on the burst name was added.]
GCN 8123 table
GRB_name GRB080822B
GCN_number 8123
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 8123 SUBJECT: GRB 080822B: MASTER optical observation DATE: 08/08/23 11:08:44 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs MASTER-Net Team: D.Kuvshinov, V. Lipunov, V.Kornilov, E.Gorbovskoy, A.Belinski, N.Shatskiy, N.Tyurina, Sternberg Astronomical Institute, Moscow Union 'Optic' A. Tlatov, I.Golubov Kislovodsk Solar Station of the Pulkovo observatory V.Krushinski, I.Zalognikh Ural State University, Kourovka S.Yazev, K.Ivanov Irkutsk State University MASTER robotic Net (Moscow region, http://observ.pereplet.ru) responded to GRB080822B (Holland et al., GCN Circ 8117) by hand due to internet problem at the Moscow Region Site. The first image was started at 2008-08-22 21:21:35 UT, 18m 43s after the GRB time. The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B). The robot did not find OT-candidate in error box. T-Tgrb Mean Time Exposition Limit Coadd? 1123 s 1138 s 30 s 17.0 no 1123s 1692 s 25x30 s 18.8 yes The message can be cited. mailto: lipunov@sai.msu.ru
GCN 8128 table
GRB_name GRB080822B
GCN_number 8128
Detection_method Swift-BAT Det
ra 63.5600°
decl 25.7600°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8128 SUBJECT: GRB 080822B, Swift-BAT refined analysis DATE: 08/08/24 21:02:00 GMT FROM: Scott Barthelmy at NASA/GSFC G. Sato (ISAS), S. D. Barthelmy (GSFC), W. Baumgartner (GSFC/UMBC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), S. T. Holland (CRESST/USRA/GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), K. McLean (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team): Using the data set from T-239 to T+903 sec from the recent telemetry downlink, we report further analysis of BAT GRB 080822B (trigger #321376) (Holland, et al., GCN Circ. 8117). The BAT ground-calculated position is RA, Dec = 63.560, 25.760 deg, which is RA(J2000) = 04h 14m 14.5s Dec(J2000) = +25d 45' 35.5" with an uncertainty of 3.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 82%. The mask-weighted light curve shows weak emission starting around T-50 sec and ending around T+70 sec. T90 (15-350 keV) is 64 +- 20 sec (estimated error including systematics). The time-averaged spectrum from T+0.0 to T+64.0 sec is fit by a power law. This fit gives a photon index 2.54 +- 0.5. (chi squared 76.5 for 59 d.o.f.). For this model the total fluence in the 15-150 keV band is 1.7 +- 0.6 x 10^-07 erg/cm2 and the 1-sec peak flux measured from T+0.00 sec in the 15-150 keV band is 0.06 +- 0.02 ph/cm2/sec. All the quoted errors are at the 90% confidence level. We note that this is a weak detection for BAT and that we can not rule out a non-burst explanation for this trigger.