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GRB 130508A

Time: 17:08:53
Trigger Number: 555413
Burst Advocate: Stephen Holland

BAT Data:

RA: a 305.351
20:21:24.2
Dec: a 34.966
34:57:57.6
90% Error Radius: b 2.2
T90: c 42
Fluence: d 6.6 (1.0)
1s Peak Photon Flux: e 0.7 (0.2)
Photon Index: f 1.80, PL (0.23)

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 130508A

XRT Data:

RA: a 20:21:17.22
Dec: a 34:57:29.9
90% Error Radius: b 2.5
Time to First Observation: c 130.49
Early Flux: d n/a
11 Hour Flux: d 0.00028673
24 Hour Flux: d 0.0000617
Initial Temporal Index: -1.969
Spectral Index (Gamma): 1.04958
Column Density (NH): e 16.44326

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 136
V Magnitude: V>20.0
Other Filter Magnitudes: B>20.5
U>20.5
UVW1>20.3
UVM2>20.3
UVW2>20.5
White>21.5

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
Host Galaxy:
Other Observatory Detections:

Comments:

Even though this is a weak detection and it is on the Galactic Plane (lon,lat= 74,-1), we determine that this is probably a GRB, but can not rule out some other type of astrophysical source. We will need the full data set to make the determination.
UVOT: no detection

References:

BAT: GCN 14607; GCN 14613
XRT: GCN 14607; GCN 14612; GCN 14614; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 14607; GCN 14619
Radio:
Redshift:
Host:
Other: GCN Report 426.1