GRB 080520

Time: 22:20:24
Trigger Number: 312047
Burst Advocate: Dirk Grupe

BAT Data:

RA: a	280.179 18:40:43.0
Dec: a	-54.964 -54:57:50.4
90% Error Radius: b	2.4
T90: c	2.8
Fluence: d	0.55 (0.17)
1s Peak Photon Flux: e	0.5 (0.1)
Photon Index: f	2.90, PL (0.51)

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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	18:40:46.35
Dec: a	-54:59:30.5
90% Error Radius: b	1.6
Time to First Observation: c	99.53
Early Flux: d	n/a
11 Hour Flux: d	0.00866392
24 Hour Flux: d	0.004042805
Initial Temporal Index:	-0.977
Spectral Index (Gamma):	2.16955
Column Density (NH): e	15.0079

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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	18:40:46.30
Dec: a	-54:59:31.0
90% Error Radius: b	0.5
Time to First Observation: c	105
V Magnitude:	V=19.96
Other Filter Magnitudes:	B>20.92 U>20.60 UVW1>20.33 UVM2>20.38 UVW2>20.25 White=19.59

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^a J2000; ^b arcsec; ^c seconds

Comments:

BAT: The burst can be classified as an X-ray flash

References:

BAT: GCN 7753; GCN 7761
XRT: GCN 7753; GCN 7754; GCN 7755; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 7753; GCN 7758
Radio:
Redshift: GCN 7757 (VLT)
Host: GCN 7771 (VLT)
Other: GCN Report 137.1