Gamma-ray Burst 120219A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:31:27 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     515375,   Seg_Num: 0
GRB_RA:          129.793d {+08h 39m 10s} (J2000),
                 130.012d {+08h 40m 03s} (current),
                 128.885d {+08h 35m 32s} (1950)
GRB_DEC:         +51.025d {+51d 01' 29"} (J2000),
                 +50.981d {+50d 58' 53"} (current),
                 +51.201d {+51d 12' 04"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1692 [image_cnts]
TRIGGER_DUR:     64.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        0.00 SOD {00:00:00.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        15976 TJD;    50 DOY;   12/02/19
GRB_TIME:        52208.09 SOD {14:30:08.09} UT
GRB_PHI:         130.95 [deg]
GRB_THETA:        20.23 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.92 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -1  +0  +0 +72  +0 
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 56"}
SUN_DIST:        136.35 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.51d {+20h 14m 01s}  -15.80d {-15d 47' 53"}
MOON_DIST:       144.43 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.87, 37.45 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      118.14, 31.40 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 149.17,-5.55 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:32:49 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     515375,   Seg_Num: 0
GRB_RA:          129.7912d {+08h 39m 09.88s} (J2000),
                 130.0107d {+08h 40m 02.56s} (current),
                 128.8836d {+08h 35m 32.07s} (1950)
GRB_DEC:         +51.0323d {+51d 01' 56.2"} (J2000),
                 +50.9890d {+50d 59' 20.2"} (current),
                 +51.2088d {+51d 12' 31.6"} (1950)
GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       2.37e-09 [erg/cm2/sec]
GRB_SIGNIF:      9.48 [sigma]
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52336.37 SOD {14:32:16.37} UT,   128.3 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.22 261.48 243.69
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 55"}
SUN_DIST:        136.34 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.52d {+20h 14m 04s}  -15.79d {-15d 47' 41"}
MOON_DIST:       144.42 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.86, 37.45 [deg] galactic lon,lat of the burst
ECL_COORDS:      118.14, 31.41 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.46 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:33:08 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     515375,   Seg_Num: 0
GRB_RA:          129.7912d {+08h 39m 09.8s} (J2000),
                 130.0107d {+08h 40m 02.5s} (current),
                 128.8836d {+08h 35m 32.0s} (1950)
GRB_DEC:         +51.0323d {+51d 01' 56.2"} (J2000),
                 +50.9890d {+50d 59' 20.2"} (current),
                 +51.2088d {+51d 12' 31.6"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       90 [cnts]
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52336.37 SOD {14:32:16.37} UT,   128.3 [sec] since BAT Trigger Time
CENTROID_X:      319.72,  raw= 320  [pixels]
CENTROID_Y:      295.39,  raw= 295  [pixels]
ROLL:            326.95 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -6.13
GRB_POS_XRT_Z:   37.76
IMAGE_URL:       sw00515375000msxps_rw.img
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 54"}
SUN_DIST:        136.34 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.52d {+20h 14m 05s}  -15.79d {-15d 47' 38"}
MOON_DIST:       144.42 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.86, 37.45 [deg] galactic lon,lat of the burst
ECL_COORDS:      118.14, 31.41 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:32:59 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     515375,   Seg_Num: 0
GRB_RA:          129.7912d {+08h 39m 09.8s} (J2000),
                 130.0107d {+08h 40m 02.5s} (current),
                 128.8836d {+08h 35m 32.0s} (1950)
GRB_DEC:         +51.0323d {+51d 01' 56.2"} (J2000),
                 +50.9890d {+50d 59' 20.2"} (current),
                 +51.2088d {+51d 12' 31.6"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       90 [cnts]
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52336.37 SOD {14:32:16.37} UT,   128.3 [sec] since BAT Trigger Time
CENTROID_X:      319.72,  raw= 320  [pixels]
CENTROID_Y:      295.39,  raw= 295  [pixels]
ROLL:            326.95 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -6.13
GRB_POS_XRT_Z:   37.76
IMAGE_URL:       sw00515375000msxps_rw.img
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 54"}
SUN_DIST:        136.34 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.52d {+20h 14m 05s}  -15.79d {-15d 47' 39"}
MOON_DIST:       144.42 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.86, 37.45 [deg] galactic lon,lat of the burst
ECL_COORDS:      118.14, 31.41 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:34:14 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     515375,   Seg_Num: 0
GRB_RA:          129.793d {+08h 39m 10s} (J2000),
                 130.012d {+08h 40m 03s} (current),
                 128.885d {+08h 35m 32s} (1950)
GRB_DEC:         +51.025d {+51d 01' 29"} (J2000),
                 +50.981d {+50d 58' 53"} (current),
                 +51.201d {+51d 12' 04"} (1950)
GRB_DATE:        15976 TJD;    50 DOY;   12/02/19
GRB_TIME:        52208.09 SOD {14:30:08.09} UT
TRIGGER_INDEX:   20000
GRB_PHI:         130.95 [deg]
GRB_THETA:        20.23 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.92 [sigma]
LC_URL:          sw00515375000msb.lc
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 53"}
SUN_DIST:        136.35 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.53d {+20h 14m 07s}  -15.79d {-15d 47' 28"}
MOON_DIST:       144.43 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.87, 37.45 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      118.14, 31.40 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is an image trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 149.17,-5.55 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:35:31 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.779d {+08h 39m 07s} (J2000)
POINT_DEC:       +51.040d {+51d 02' 24"} (J2000)
POINT_ROLL:      326.954d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52347.36 SOD {14:32:27.36} UT,   139.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.861
N_STARS:         37
X_OFFSET:        403 [pixels]
Y_OFFSET:        594 [pixels]
X_MAX:           1362 [pixels]
Y_MAX:           1553 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00515375000msufc0139.fits
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 52"}
SUN_DIST:        136.33 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.54d {+20h 14m 10s}  -15.79d {-15d 47' 16"}
MOON_DIST:       144.41 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.41 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:36:01 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.779d {+08h 39m 07s} (J2000)
POINT_DEC:       +51.040d {+51d 02' 24"} (J2000)
POINT_ROLL:      326.954d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52347.36 SOD {14:32:27.36} UT,   139.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.861
N_STARS:         37
X_OFFSET:        403 [pixels]
Y_OFFSET:        594 [pixels]
X_MAX:           1362 [pixels]
Y_MAX:           1553 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00515375000msufc0139.fits
SUN_POSTN:       332.42d {+22h 09m 41s}  -11.35d {-11d 20' 52"}
SUN_DIST:        136.33 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.55d {+20h 14m 11s}  -15.79d {-15d 47' 12"}
MOON_DIST:       144.41 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.41 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:37:01 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.779d {+08h 39m 07s} (J2000)
POINT_DEC:       +51.040d {+51d 02' 24"} (J2000)
ROLL:            326.954d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52347.36 SOD {14:32:27.36} UT,   139.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     351354755
X_OFFSET:        723 [pixels]
Y_OFFSET:        914 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       883
Y_GRB_POS:       1074
BINNING_INDEX:   1
IM_URL:          sw00515375000msuni0147.fits
SUN_POSTN:       332.42d {+22h 09m 42s}  -11.35d {-11d 20' 51"}
SUN_DIST:        136.33 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.56d {+20h 14m 14s}  -15.78d {-15d 47' 03"}
MOON_DIST:       144.41 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.41 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:37:13 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.779d {+08h 39m 07s} (J2000)
POINT_DEC:       +51.040d {+51d 02' 24"} (J2000)
ROLL:            326.954d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52347.36 SOD {14:32:27.36} UT,   139.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     351354755
X_OFFSET:        723 [pixels]
Y_OFFSET:        914 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       883
Y_GRB_POS:       1074
BINNING_INDEX:   1
IM_URL:          sw00515375000msuni0147.fits
SUN_POSTN:       332.42d {+22h 09m 42s}  -11.35d {-11d 20' 51"}
SUN_DIST:        136.33 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.56d {+20h 14m 14s}  -15.78d {-15d 47' 01"}
MOON_DIST:       144.41 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.41 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #12964
C. A. Swenson (PSU), D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), F. E. Marshall (NASA/GSFC), A. Melandri (INAF-OAB), D. M. Palmer (LANL), C. J. Saxton (UCL-MSSL), B. Sbarufatti (INAF-OAB/PSU), G. Tagliaferri (INAF-OAB) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 14:30:08 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120219A (trigger=515375). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 129.793, +51.025 which is
```
   RA(J2000) = 08h 39m 10s
   Dec(J2000) = +51d 01' 29"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). As is usual for an image trigger, there is no obvious variation in the immediately available lightcurve.
The XRT began observing the field at 14:32:16.4 UT, 128.3 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 129.79218, 51.03194 which is equivalent to:
```
   RA(J2000)  = 08h 39m 10.12s
   Dec(J2000) = +51d 01' 55.0"
```
with an uncertainty of 4.1 arcseconds (radius, 90% containment). This location is 25 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 3.48 x 10^20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 2.37e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 139 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.03.
Burst Advocate for this burst is C. A. Swenson (cswenson AT astro.psu.edu). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:42:55 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.781d {+08h 39m 08s} (J2000)
POINT_DEC:       +51.042d {+51d 02' 31"} (J2000)
POINT_ROLL:      326.957d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52505.55 SOD {14:35:05.55} UT,   297.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.528
N_STARS:         13
X_OFFSET:        403 [pixels]
Y_OFFSET:        594 [pixels]
X_MAX:           1362 [pixels]
Y_MAX:           1553 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00515375000msufc0297.fits
SUN_POSTN:       332.43d {+22h 09m 43s}  -11.35d {-11d 20' 46"}
SUN_DIST:        136.32 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.61d {+20h 14m 27s}  -15.77d {-15d 46' 09"}
MOON_DIST:       144.40 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.42 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:43:05 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.781d {+08h 39m 08s} (J2000)
POINT_DEC:       +51.042d {+51d 02' 31"} (J2000)
POINT_ROLL:      326.957d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52505.55 SOD {14:35:05.55} UT,   297.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.528
N_STARS:         13
X_OFFSET:        403 [pixels]
Y_OFFSET:        594 [pixels]
X_MAX:           1362 [pixels]
Y_MAX:           1553 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00515375000msufc0297.fits
SUN_POSTN:       332.43d {+22h 09m 43s}  -11.35d {-11d 20' 45"}
SUN_DIST:        136.32 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.61d {+20h 14m 27s}  -15.77d {-15d 46' 08"}
MOON_DIST:       144.40 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.42 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:44:10 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.781d {+08h 39m 08s} (J2000)
POINT_DEC:       +51.042d {+51d 02' 31"} (J2000)
ROLL:            326.957d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52505.55 SOD {14:35:05.55} UT,   297.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     351354913
X_OFFSET:        723 [pixels]
Y_OFFSET:        914 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       883
Y_GRB_POS:       1074
BINNING_INDEX:   1
IM_URL:          sw00515375000msuni0305.fits
SUN_POSTN:       332.43d {+22h 09m 43s}  -11.35d {-11d 20' 44"}
SUN_DIST:        136.32 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.62d {+20h 14m 29s}  -15.77d {-15d 45' 58"}
MOON_DIST:       144.40 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.42 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:44:32 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     515375,   Seg_Num: 0
GRB_RA:          129.7898d {+08h 39m 09.55s} (J2000),
                 130.0093d {+08h 40m 02.23s} (current),
                 128.8822d {+08h 35m 31.73s} (1950)
GRB_DEC:         +51.0315d {+51d 01' 53.4"} (J2000),
                 +50.9882d {+50d 59' 17.3"} (current),
                 +51.2080d {+51d 12' 28.7"} (1950)
GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52500.00 SOD {14:35:00.00} UT,   291.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       332.43d {+22h 09m 43s}  -11.35d {-11d 20' 44"}
SUN_DIST:        136.34 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.63d {+20h 14m 30s}  -15.77d {-15d 45' 55"}
MOON_DIST:       144.41 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.86, 37.45 [deg] galactic lon,lat of the burst
ECL_COORDS:      118.14, 31.41 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.11% < P(seren) < 0.58%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Feb 12 14:44:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     515375,   Seg_Num: 0
POINT_RA:        129.781d {+08h 39m 08s} (J2000)
POINT_DEC:       +51.042d {+51d 02' 31"} (J2000)
ROLL:            326.957d
IMG_START_DATE:  15976 TJD;    50 DOY;   12/02/19
IMG_START_TIME:  52505.55 SOD {14:35:05.55} UT,   297.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     351354913
X_OFFSET:        723 [pixels]
Y_OFFSET:        914 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       883
Y_GRB_POS:       1074
BINNING_INDEX:   1
IM_URL:          sw00515375000msuni0305.fits
SUN_POSTN:       332.43d {+22h 09m 43s}  -11.35d {-11d 20' 44"}
SUN_DIST:        136.32 [deg]   Sun_angle= -10.5 [hr] (East of Sun)
MOON_POSTN:      303.62d {+20h 14m 30s}  -15.77d {-15d 45' 56"}
MOON_DIST:       144.40 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:      167.85, 37.44 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      118.13, 31.42 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #12965
K.Ivanov, S.Yazev, N.M.Budnev, E.Konstantinov, V.Lenok, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, M.Kornilov, A.Sankovich Sternberg Astronomical Institute, Moscow State University
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
H.Levato, C.Mallamaci, C.Saffe ICATE (Instituto de Ciencias Astronomicas, de la Tierra y del Espacio), San Juan, San Juan University, Felix Aguilar Observatory, Argentina
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka was pointed to the GRB120219A (Swenson et al., GCN Circ 12964) 22 sec s after notice time and 105 sec after GRB time at 2012-02-19 14:31:54 UT. On our first (20s exposure, two "ra" and "dec" polarisation orientations) set we haven`t found optical transient within SWIFT XRT error-box. The 5-sigma upper limit in two polarizations has been about 17.3mag and 17.0 correspondingly.
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kourovka (Ural) was pointed to the GRB120219A (Swenson et al., GCN Circ 12964) 26 sec s after notice time and 109 sec after GRB time at 2012-02-19 14:31:58 UT. On our first (20s exposure, diagonal polarisation) set we haven`t found optical transient within SWIFT XRT error-box. The 5-sigma upper limit has been about 17.0 mag
One MASTER Very Wide Field Camera located at Tunka (D=68 mm, 420 square degrees, 11 Mpx) was observed GRB error box with 5 s exposure befoure, during and after GRB Trigger Time without time gap between images.
Our unfiltered images are calibrated relative to Tycho stars (V). The magnitude limit of the each emage is 11.5 m at the edge of FOW. We do not detect OT. But we need the duration and beginning time of the GRB. The redaction is continuated.
The message may be cited.
GCN Circular #12966
L.P. Xin, M. Zhai , J. Y.Wei, Y.L. Qiu,J. Wang, J.S. Deng, C. Wu, X. H. Han on behalf of EAFON report:
We began to observe GRB120219A (Swenso et al. GCN 12964 ) with Xinglong TNT telescope at 14:32:15 (UT), 127 sec after the burst. A serveral white and R-band were obtained.
After combining 11*300s R-band images, a new marginal source was found within the errorbox of X-ray counterpart ( Swenso et al. GCN 12964). Its coordinates ( RA and Dec ) are 08:39:09.55 51:01:56.5 (J2000) with an uncertainty of about 1 arcsecond. The brightness of the source is estimated to be about 21.5 +/- 0.3 mag relatively to USNO B1.0 R2 mag at the mean time of 37 min after the burst.
Further observations and confirmation are encouraged.
This message may be cited.
For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org/grb/
We thank ChunLan Lu for performing these observations.
GCN Circular #12967
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1088 s of XRT Photon Counting mode data and 2 UVOT images for GRB 120219A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 129.79026, +51.03174 which is equivalent to:
```
RA (J2000): 08h 39m 9.66s
Dec (J2000): +51d 01' 54.2"
```
with an uncertainty of 1.6 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #12968
J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (OSU), C. A. Swenson (PSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+963 sec from recent telemetry downlinks, we report further analysis of BAT GRB 120219A (trigger #515375) (Swenson, et al., GCN Circ. 12964). The BAT ground-calculated position is RA, Dec = 129.862, 51.006 deg, which is
```
   RA(J2000)  =  08h 39m 26.8s 
   Dec(J2000) = +51d 00' 21.4" 
```
with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 77%.
The mask-weighted light curve shows two slightly overlapping peaks starting at ~T-15 sec, peaking at T+0 and T+70 sec, and returning to baseline at ~T+140 sec. T90 (15-350 keV) is 90.5 +- 10.9 sec (estimated error including systematics).
The time-averaged spectrum from T-7.83 to T+90.06 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index -0.60 +- 1.69, and Epeak of 51.6 +- 14.2 keV (chi squared 54.9 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 5.4 +- 1.4 x 10^-7 erg/cm2 and the 1-sec peak flux measured from T-2.30 sec in the 15-150 keV band is 0.3 +- 0.1 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.56 +- 0.23 (chi squared 63.9 for 57 d.o.f.). All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/515375/BA/
GCN Circular #12969
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME collaboration:
We observed the field of GRB 120219A (Swenson et al., GCNC 12964) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.
The observation started on 2012-02-19 14:31:47 UT (~99 sec after the burst) We did not find any new point source within the enhanced XRT circle (Goad et al., GCNC 12967) in all the three bands. We also could not detect the previously reported afterglow (Xin et al., GCNC 12966).
Three sigma upper limits of the OT are listed below. We used SDSS catalog for flux calibration.
```
T0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic
------------------------------------------------------
0.00458    14:36:44     540.0   >20.5  >20.4  >19.6
0.04314    15:32:16    6300.0   >21.4  >21.2  >20.4
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
```
GCN Circular #12970
C. A. Swenson (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 120219A 139 s after the BAT trigger (Swenson et al., GCN Circ. 12964). No optical afterglow consistent with the XRT position (Goad et al., GCN Circ. 12967) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           139          289          147>21.2
u_FC               298          547          246>20.5
white              139          598          167>21.2
v                 3846         4045          197>19.3
b                  553          573           19>19.6
u                  298         4614          397>20.7
w1                4255         4455          197>21.5
m2                4050         4250          197>19.9
w2                 603          623           19>19.5
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #12971
D.N. Burrows (PSU), O.M. Littlejohns (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), G. Stratta (ASDC), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), J.A. Kennea (PSU), M.C. Stroh (PSU) and C.A. Swenson report on behalf of the Swift-XRT team:
We have analysed 6.3 ks of XRT data for GRB 120219A (Swenson et al. GCN Circ. 12964), from 118 s to 51.3 ks after the BAT trigger. The data comprise 667 s in Windowed Timing (WT) mode (the first 9 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 12967).
The light curve can be modelled with an initial power-law decay with an index of alpha=3.25 (+0.11, -0.10), followed by a break at T+444 s to an alpha of 1.64 (+0.15, -0.14).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 3.25 (+0.16, -0.14). The best-fitting absorption column is 2.25 (+0.26, -0.24) x 10^21 cm^-2, in excess of the Galactic value of 3.5 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 2.11 (+0.14, -0.11) and a best-fitting absorption column consistent with the Galactic value. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x 10^-11 (3.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     0 (+3.4, -0) x 10^20 cm^-2
Galactic foreground: 3.5 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     2.11 (+0.14, -0.11)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00515375.
This circular is an official product of the Swift-XRT team.
GCN Circular #12973
D. A. Perley and E. Bellm (Caltech) report:
We imaged the location of GRB 120219A (Swenson et al., GCN 12964) with the Keck I telescope (+ LRIS) on 2012-02-20 (UT) between 10:22-10:41 UT. Observations suffered from strong attenuation due to clouds and poor seeing (>2 arcsec). In a stack of our two deepest individual 200 second R-band frames (at 10:27 and 10:32) UT, we detect no source to a limiting magnitude of R > 24.0 mag. The afterglow is also not detected in our g-band or I-band images. If the reported object of Xin et al. (GCN 12966) represents a real source, this apparent fading confirms it as the afterglow of GRB 120219A.
GCN Circular #12974
Brajesh Kumar, Vijay Kumar Bhatt and S. B. Pandey (ARIES, Nainital, India, on behalf of larger Indian GRB collaboration).
We observed the Swift GRB120219A (trigger=515375, Swenson et al. GCN 12964)
with the 104cm telescope at ARIES Nainital starting ~ 22 minutes after the burst i.e. at 14:52:46 UT and onwards. Several images were taken in R_c and I_c pass-bands.
In the co-added R_c frame (200sec + 2*300sec), we did not detect the optical transient reported by Xin et al. (GCN 12966) down to a limiting magnitude of ~ 20.5 mag. The photometry was performed in comparison to nearby USNO- B1 stars.
This massage may be cited.
GCN Circular #12975
Brajesh Kumar, Vijay Kumar Bhatt and S. B. Pandey (ARIES, Nainital, India, on behalf of larger Indian GRB collaboration).
We made a typo in the subject heading of GCNC 12974.
The correct subject would be "GRB 120219A: optical observations".
We apologize for the typo.
GCN Circular #12976
J. Gorosabel (IAA-CSIC), P. Kubanek (IAA-CSIC & U. Valencia), R. Sanchez-Ramirez (IAA-CSIC), report on behalf of a larger collaboration:
"We imaged the field of the Swift GRB 120219A (Swenson et al., GCN Circ. 12964) with the 1.23m Calar Alto telescope. The observations were carried out in the R and V-bands on Feb 19.89829--20.03333 UT and 20.03396--20.15466 UT, respectively (7.1--13.2 hours post burst). We detect a faint source at RA(J2000)=08:39:09.61 Dec(J2000)=+51:01:55.5 present in both bands (with a +/-0.9" error in each coordinate), consistent with the enhanced XRT error circle (Goad et al., GCN Circ. 12967) and the candidate reported by Xin et al. (GCN Circ. 12966). Preliminary photometry yields an R-band magnitude of ~22.8 with respect to the USNO B1.0 catalogue."
GCN Circular #12977
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, A.Kuznetsov, A.Sankovich Sternberg Astronomical Institute, Moscow State University
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (Global MASTER-Net: http://observ.pereplet.ru) located in Tunka and Ural was pointed to the GRB120219A (Swenson et al., GCN Circ 12964; Ivanov et al., GCN Circ 12965).
One MASTER Very Wide Field Camera located at Tunka (D=68 mm, 420 square degrees, 11 Mpx) was observed GRB error box with 5 s exposure before, during and after GRB Trigger Time without time gap between images. Our unfiltered images are calibrated relative to Tycho stars (V).
We haven`t found optical transient within enhanced SWIFT XRT error-box (Goad et al., GCN Circ 12967).
Our results:
```
T_start-T_trig    T_mean-T_trig   Limit  Coadd  Telescope   Filter   Site
      (s)                   (s)

      -9                -6.5       11.5     No    VWFC (E)   Unfilt   Tunka
      -4                -1.5       11.5     No    VWFC (E)   Unfilt   Tunka
      -9                33.5       13.0     18    VWFC (E)   Unfilt   Tunka
     105                115        17.3     No   MASTERII(E)    P|    Tunka
     105                115        17.0     No   MASTERII(W)    P-    Tunka
     105                772        19.5     22   MASTERII(E+W)Unfilt  Tunka
     109                119        17.0     No   MASTERII(W)    P/     Ural
     109                552        19.0     11   MASTERII(W)    P/     Ural
```
There is some marginal object at Xin et al.(GCN 12966) OT candidate position in Ural and Tunka added images with ~19 and ~20 mag correspondingly (see images). The some marginal object appear on Very Wide Field Camera at -1.5 s (mean time) and +3.5s images with 12 mag (pixel is equal 22"). But the signal/noice level is 2-3 sigma and we can not confirm or reject this candidate.
The images and video are available at http://master.sai.msu.ru/static/GRB120219A/GRB120219A.html .
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).
The message may be cited.
GCN Circular #12978
A.Volnova (SAI MSU), E. Klunko (ISTP), A. Pozanenko (IKI) on behalf of larger GRB follow up collaboration report:
We observed the field of GRB 120219A (Swenson et al., GCN 12964) with AZT-33IK telescope of Sayan observatory (Mondy) on Feb. 19 between (UT) 15:14:55 - 16:25:47 in R filter under mean seeing (FWHM) of 2.2". In a combined image we marginally detect the afterglow (Xin et al., GCN 12966; Gorosabel et al., GCN 12976). Preliminary photometry is based on the USNO-B1.0 field stars:
```
  
T0+,        Filter,  Exposure,   OT,
(mid, d)             (s)
0.05571    R     70 x 60      22.5 +/-0.3
```
GCN Circular #12987
V.V.Golovnya (Main Astro Obs, Kyiv) report:
We have undertaken the review of the sky area in vicinity of=20 GRB 120219A (M.R. Goad et al. GCN Circ.12967) on=20 astronegatives, collected in Ukrainian NAS Main astronomical=20 observatory plate archive (1976-1996). All the plates with=20 the possible object appearance are digitized using Microtek=20 ScanMaker 9800XL TMA and Epson Expression 10000XL flatbed=20 scanners and have been placed into Golosiiv Plate Archive=20 database DBGPA with open access to them. The list of plates is given in the table:
```
YYYYMMDD/TimeUT	--Plates--	Exp.	LimMag	Star USNOA2=20
19830312/185937	GUA040C000131A	11.7	15.3	1350-07433967
19840128/215634	GUA040C000295A	13.5	15.3	1350-07433967
19840128/221630	GUA040C000296	13.5	15.3	1350-07433967
19900105/000440	GUA040C001552A	18.0	15.3	1350-07433967
Plates: =96the plates archive identifier of DWA (D/F=3D400/2000,=20
GUA040C  M=3D103"/mm) of the Ukrainian NAS Main Astro obs.
         (Marsden's number - 83) the plate number [1].
Exp.   - Duration of the maximum exposure (minutes).=20
LimM   - Limited V mag, derived in the 20 minutes area around=20
       the location given in M.R. Goad et al. GCN Circ.12967:=20
       RA(J2000)=3D 08h 39m 09.66s, Dec(J2000)=3D +51d 01'54.2"
Star USNOA2 - Comparison star.
```
The preview images of 4 areas together with =20 the 20x14 min.of arc area from SkyMap can be found in =20 http://gua.db.ukr-vo.org/img/grb/120219A/index.html The images with full resolution are available via e-mail on=20 demand.
References:
1.L.Pakuliak DATABASE of GOLOSIIV PLATE ARCHIVE (DBGPA V2.0), http://gua.db.ukr-vo.org

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Jochen Greiner, last update: 24-Feb-2012 [Disclaimer]