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GRB 120909A

Time: 01:42:03
Trigger Number: 533060
Burst Advocate: Stefan Immler

BAT Data:

RA: a 275.735
18:22:56.4
Dec: a -59.432
-59:25:55.2
90% Error Radius: b 1.2
T90: c n/a
Fluence: d 68 (2)
1s Peak Photon Flux: e 1.8 (0.3)
Photon Index: f 1.39, PL (0.06)

90% error in parentheses,
a J2000; b arcmin; c seconds; d 10-7 erg/cm2 (15-150 keV); e ph/cm2/sec (15-150 keV); f PL = simple power-law, CPL = cutoff power-law (15-150 keV)

BAT Light Curve:

BAT Light Curve for GRB 120909A

XRT Data:

RA: a 18:22:56.77
Dec: a -59:26:55.0
90% Error Radius: b 1.4
Time to First Observation: c 93.42
Early Flux: d 755
11 Hour Flux: d 0.2152997
24 Hour Flux: d 0.0619185
Initial Temporal Index: -1.209
Spectral Index (Gamma): 2.06709
Column Density (NH): e 20.6609

Note: Please be aware that only the very basic temporal and spectral quantities are reported here. You are strongly encouraged to see the referenced GCN circulars for full details.
a J2000; b arcsec; c seconds; d 10-11 erg/cm2/s (0.3-10 keV); e 1021 cm-2

» XRT GRB Live Catalogue
» XRT Light Curves
» XRT Spectra

UVOT Data:

RA: a n/a
Dec: a n/a
90% Error Radius: b n/a
Time to First Observation: c 3308
V Magnitude: V>20.2
Other Filter Magnitudes: B>21.5
U>21.4
UVW1>21.6
UVM2>21.4
UVW2>21.6
White=20.75

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
3.93 (VLT: absorption)
Host Galaxy:
Other Observatory Detections:
PROMPT, MPG/ESO (2.2m), VLT, Konus-Wind, Fermi (GBM), TAROT (25cm)

Comments:

Because of an earth limb constraint, Swift slewed away before UVOT could take its initial exposures.

References: