GRB 070227

Time: 22:21:59
Trigger Number: 262347
Ground Analysis
Burst Advocate: Claudio Pagani

BAT Data:

RA: a	120.578 08:02:18.7
Dec: a	-46.302 -46:18:07.2
90% Error Radius: b	2.3
T90: c	7
Fluence: d	16.20 (2.49)
1s Peak Photon Flux: e	4.62 (1.27)
Photon Index: f	1.53, PL (0.27)

---

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	08:02:19.37
Dec: a	-46:18:50.4
90% Error Radius: b	2.1
Time to First Observation: c	n/a
Early Flux: d	n/a
11 Hour Flux: d	0.09417642
24 Hour Flux: d	0.03946644
Initial Temporal Index:	-1.115
Spectral Index (Gamma):	2.25869
Column Density (NH): e	3.59505

---

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

UVOT Data:

RA: a	n/a
Dec: a	n/a
90% Error Radius: b	n/a
Time to First Observation: c	56680
V Magnitude:	V>20.90
Other Filter Magnitudes:	B>21.58 U>21.31 UVW1>21.17 UVM2>21.34 UVW2>21.04

---

^a J2000; ^b arcsec; ^c seconds

Comments:

Burst found in ground analysis, ToO issued.
XRT: possible afterglow
UVOT: no detection

References:

BAT: GCN 6156; GCN 6158; arXiv:0707.4626
XRT: GCN 6157; GCN 6167; Evans et al., 2009, MNRAS, 397, 1177
UVOT: GCN 6160
Radio:
Redshift:
Host:
Other: GCN Report 37.1