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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)

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 080520

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

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

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
1.545 (VLT: emission)
Host Galaxy:
VLT detection
Other Observatory Detections:
MPI/ESO (2.2m), VLT

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