GRB090129A

This page lists all entries on GRB090129A in GRBweb

Summary Fermi GBM IPN Swift GCN 8861 GCN 8862 GCN 8897

Summary table
Variable Value Source
GRB_name_Fermi GRB090129880
T0 21:07:15 UTC GCN_circulars,Swift Det
ra 269.1050° Swift
decl -32.7930° Swift
pos_error 7.77e-03° Swift
T90 16.64 s Fermi_GBM
T90_error 3.328 s Fermi_GBM
T90_start 21:07:15.170 UTC Fermi_GBM
fluence 5.57e-06 erg/cm² Fermi_GBM
fluence_error 6.20e-08 erg/cm² Fermi_GBM
T100 17.5 s
GBM_located False
mjd 54860.88003472222 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB090129880
trigger_name bn090129880
ra 269.0000°
decl -32.8000°
pos_error 2.94e+00°
datum 2009-01-29
t_trigger 21:07:15.426 UTC
T90 16.64 s
T90_error 3.328 s
T90_start 21:07:15.170 UTC
fluence 5.57e-06 erg/cm²
fluence_error 6.20e-08 erg/cm²
flux_1024 6.60e+00 erg/cm²/s
flux_1024_error 2.18e-01 erg/cm²/s
flux_1024_time 4.48e-01 erg/cm²/s
flux_64 9.78e+00 erg/cm²/s
flux_64_error 1.01e+00 erg/cm²/s
IPN table
GRB_name GRB090129A
ra 269.0917°
decl -32.8333°
pos_error 5.00e-02°
Swift table
GRB_name GRB090129A
t_trigger 21:07:15 UTC
ra 269.1050°
decl -32.7930°
pos_error 7.77e-03°
T90 17.5 s
fluence 2.10e-06 erg/cm²
GCN 8861 table
GRB_name GRB090129A
GCN_number 8861
Detection_method Swift Det
t_trigger 21:07:15 UTC
ra 269.0920°
decl -32.8260°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8861 SUBJECT: GRB 090129: Swift detection of a burst DATE: 09/01/29 21:20:29 GMT FROM: Scott Barthelmy at NASA/GSFC H. Ziaeepour (UCL-MSSL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), P.A. Curran (MSSL-UCL), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Guidorzi (U Ferrara), J. A. Kennea (PSU), N. P. M. Kuin (MSSL), C. B. Markwardt (CRESST/GSFC/UMD), P. T. O'Brien (U Leicester), C. Pagani (PSU), K. L. Page (U Leicester), B. A. Rowlinson (U Leicester), P. Schady (MSSL-UCL), M. Stamatikos (NASA/ORAU) and L. Vetere (PSU) report on behalf of the Swift Team: At 21:07:15 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090129 (trigger=341504). The BAT on-board calculated location is RA, Dec 269.092, -32.826 which is RA(J2000) = 17h 56m 22s Dec(J2000) = -32d 49' 32" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a FRED-like structure with a duration of about 20 sec. The peak count rate was ~7000 counts/sec (15-350 keV), at ~1 sec after the trigger. Due to an observing constraint, Swift cannot slew to the BAT position. There will thus be no XRT or UVOT data for this trigger until at least 03 Feb 2009. Burst Advocate for this burst is H. Ziaeepour (hz AT mssl.ucl.ac.uk). 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 8862 table
GRB_name GRB090129A
GCN_number 8862
Detection_method Swift-BAT Det
ra 269.1050°
decl -32.7930°
Circular_text TITLE: GCN CIRCULAR NUMBER: 8862 SUBJECT: GRB 090129: Swift-BAT refined analysis DATE: 09/01/30 13:58:35 GMT FROM: Scott Barthelmy at NASA/GSFC S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU), H. Ziaeepour (UCL-MSSL) (i.e. the Swift-BAT team): Using the data set from T-120 to T+962 sec from recent telemetry downlinks, we report further analysis of BAT GRB 090129 (trigger #341504) (Ziaeepour, et al., GCN Circ. 8861). The BAT ground-calculated position is RA, Dec = 269.105, -32.793 deg which is RA(J2000) = 17h 56m 25.1s Dec(J2000) = -32d 47' 34.8" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 89%. The mask-weighted light curve shows emission starting at ~T-30 sec, then a large-amplitude FRED peak that returns to background at ~T+70 sec. T90 (15-350 keV) is 17.5 +- 2.7 sec (estimated error including systematics). The time-averaged spectrum from T-0.2 to T+27.0 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.88 +- 0.06. The fluence in the 15-150 keV band is 2.1 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+1.00 sec in the 15-150 keV band is 3.7 +- 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/341504/BA/
GCN 8897 table
GRB_name GRB090129A
GCN_number 8897
Detection_method Fermi GBM Det
t_trigger 21:07:15.420 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 8897 SUBJECT: GRB 090129: Fermi GBM detection DATE: 09/02/09 17:17:37 GMT FROM: Sylvain Guiriec at UAH S. Guiriec (UAH) reports on behalf of the Fermi GBM Team: "At 21:07:15.42 UT on 29 January 2009, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 090129 (trigger 254956037 / 090129880) which was also detected by the SWIFT-BAT. The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 22 degrees. The GBM light curve consists of a single peak with a FRED shape starting at ~T0-0.3s with a duration (T90) of about 17.2s (8-1000 keV). The time-averaged spectrum from T0-0.3s to T0+15.1s is well fitted by a Band function with Epeak = 123.2 +/- 44.8 keV, alpha = -1.39 +/- 0.13, and beta = -1.98 +/- 0.14 (chi squared 373 for 374 d.o.f.). The event fluence (8-1000 keV) in this time interval is (5.6 +/- 0.7)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+0.8 s in the 8-1000 keV band is 8.0 +/- 0.1 ph/s/cm^2. The spectral and temporal analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."