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GRB 050223

Time: 03:09:06
Trigger Number: 106709
Burst Advocate:

BAT Data:

RA: a 271.394
18:05:34.6
Dec: a -62.465
-62:27:54.0
90% Error Radius: b 1.5
T90: c 22.500
Fluence: d 6.36 (0.65)
1s Peak Photon Flux: e 0.69 (0.16)
Photon Index: f 1.85, PL (0.17)

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 050223

XRT Data:

RA: a 18:05:32.43
Dec: a -62:28:20.0
90% Error Radius: b 3.7
Time to First Observation: c n/a
Early Flux: d n/a
11 Hour Flux: d 0.012110821
24 Hour Flux: d 0.006444152
Initial Temporal Index: -0.8087
Spectral Index (Gamma): 1.79783
Column Density (NH): e 0.00131696

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 2782
V Magnitude: n/a
Other Filter Magnitudes: n/a

a J2000; b arcsec; c seconds

Other Burst Info:

Redshift:
0.5915 (Magellan: emission from host)
0.584 (VLT: emission from host)
Host Galaxy:
R = 21.6, Ks = 18.9 (VLT)
Other Observatory Detections:
INTEGRAL/IBIS, XMM, VLT

Comments:

BAT: slow rise and fall, several small peaks
UVOT: no detection
No AT slew (too near Earth)

References:

BAT: GCN 3055; TS table 9/13/05, 9/24/05; arXiv:0707.4626
XRT: GCN 3054; position DB table 2/24/05; flux DB table 4/4/05; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 3057
Radio:
Redshift: GCN 5283 (Magellan); A&A, 459, L5, 2006 (VLT)
Host: GCN 5268 (VLT)
Other: MNRAS, 363, 76P, 2005