GRB 090309A

Time: 23:29:13
Trigger Number: 345945
Burst Advocate: Phil Evans

BAT Data:

RA: a	284.978 18:59:54.7
Dec: a	-25.274 -25:16:26.4
90% Error Radius: b	2.3
T90: c	3.0
Fluence: d	1.3 (0.3)
1s Peak Photon Flux: e	0.9 (0.2)
Photon Index: f	1.36, PL (0.33)

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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:

XRT Data:

RA: a	18:59:53.82
Dec: a	-25:15:39.6
90% Error Radius: b	2.0
Time to First Observation: c	79.3
Early Flux: d	n/a
11 Hour Flux: d	n/a
24 Hour Flux: d	0.082
Initial Temporal Index:	0.38
Spectral Index (Gamma):	2.2
Column Density (NH): e	2.8

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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	82
V Magnitude:	V>20.7
Other Filter Magnitudes:	B>21.4 U>21.5 UVW1>21.6 UVM2>21.6 UVW2>21.6 White>21.8

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^a J2000; ^b arcsec; ^c seconds

Comments:

BAT: unable to determine if this is a short or long burst.
UVOT: no detection

References:

BAT: GCN 8964; GCN 8967; GCN 8982
XRT: GCN 8964; GCN 8969; GCN 8970
UVOT: GCN 8964; GCN 8973
Radio:
Redshift:
Host:
Other: GCN Report 203.1