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)

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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	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

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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	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

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^a J2000; ^b arcsec; ^c seconds

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