Gamma-ray Burst 120213A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:27:40 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     514767,   Seg_Num: 0
GRB_RA:          301.032d {+20h 04m 08s} (J2000),
                 301.061d {+20h 04m 15s} (current),
                 300.911d {+20h 03m 39s} (1950)
GRB_DEC:         +65.397d {+65d 23' 51"} (J2000),
                 +65.432d {+65d 25' 56"} (current),
                 +65.254d {+65d 15' 15"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5788 [cnts]    Image_Peak=426 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   137     E_range: 15-50 keV
BKG_INTEN:       31781 [cnts]
BKG_TIME:        1624.11 SOD {00:27:04.11} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15970 TJD;    44 DOY;   12/02/13
GRB_TIME:        1639.53 SOD {00:27:19.53} UT
GRB_PHI:         130.91 [deg]
GRB_THETA:         5.78 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.29 [sigma]
IMAGE_SIGNIF:    13.83 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +1  +3  +0  +0 -15  +0 
SUN_POSTN:       326.02d {+21h 44m 04s}  -13.62d {-13d 37' 15"}
SUN_DIST:         81.25 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.93d {+13h 51m 43s}  -15.03d {-15d 01' 55"}
MOON_DIST:       104.94 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:        9.10, 77.45 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate 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 = 182.12,-12.08 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:28:41 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     514767,   Seg_Num: 0
GRB_RA:          301.0105d {+20h 04m 02.51s} (J2000),
                 301.0393d {+20h 04m 09.43s} (current),
                 300.8900d {+20h 03m 33.59s} (1950)
GRB_DEC:         +65.4092d {+65d 24' 33.1"} (J2000),
                 +65.4440d {+65d 26' 38.2"} (current),
                 +65.2660d {+65d 15' 57.6"} (1950)
GRB_ERROR:       5.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       4.08e-08 [erg/cm2/sec]
GRB_SIGNIF:      8.18 [sigma]
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1689.06 SOD {00:28:09.06} UT,   49.5 [sec] since BAT Trigger Time
TAM[0-3]:        327.66 237.22 261.53 243.33
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       326.02d {+21h 44m 04s}  -13.62d {-13d 37' 14"}
SUN_DIST:         81.26 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.94d {+13h 51m 45s}  -15.04d {-15d 02' 05"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.45, 17.41 [deg] galactic lon,lat of the burst
ECL_COORDS:        9.13, 77.46 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.88 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:29:01 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     514767,   Seg_Num: 0
GRB_RA:          301.0105d {+20h 04m 02.5s} (J2000),
                 301.0393d {+20h 04m 09.4s} (current),
                 300.8900d {+20h 03m 33.5s} (1950)
GRB_DEC:         +65.4092d {+65d 24' 33.1"} (J2000),
                 +65.4440d {+65d 26' 38.2"} (current),
                 +65.2660d {+65d 15' 57.6"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       67 [cnts]
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1689.06 SOD {00:28:09.06} UT,   49.5 [sec] since BAT Trigger Time
CENTROID_X:      334.50,  raw= 335  [pixels]
CENTROID_Y:      296.36,  raw= 296  [pixels]
ROLL:            155.47 [deg]
GAIN:            1
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -3.85
GRB_POS_XRT_Z:   72.62
IMAGE_URL:       sw00514767000msxps_rw.img
SUN_POSTN:       326.02d {+21h 44m 04s}  -13.62d {-13d 37' 14"}
SUN_DIST:         81.26 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.94d {+13h 51m 46s}  -15.04d {-15d 02' 09"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.45, 17.41 [deg] galactic lon,lat of the burst
ECL_COORDS:        9.13, 77.46 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:28:53 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     514767,   Seg_Num: 0
GRB_RA:          301.0105d {+20h 04m 02.5s} (J2000),
                 301.0393d {+20h 04m 09.4s} (current),
                 300.8900d {+20h 03m 33.5s} (1950)
GRB_DEC:         +65.4092d {+65d 24' 33.1"} (J2000),
                 +65.4440d {+65d 26' 38.2"} (current),
                 +65.2660d {+65d 15' 57.6"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       67 [cnts]
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1689.06 SOD {00:28:09.06} UT,   49.5 [sec] since BAT Trigger Time
CENTROID_X:      334.50,  raw= 335  [pixels]
CENTROID_Y:      296.36,  raw= 296  [pixels]
ROLL:            155.47 [deg]
GAIN:            1
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -3.85
GRB_POS_XRT_Z:   72.62
IMAGE_URL:       sw00514767000msxps_rw.img
SUN_POSTN:       326.02d {+21h 44m 04s}  -13.62d {-13d 37' 14"}
SUN_DIST:         81.26 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.94d {+13h 51m 46s}  -15.04d {-15d 02' 07"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.45, 17.41 [deg] galactic lon,lat of the burst
ECL_COORDS:        9.13, 77.46 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:30:53 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     514767,   Seg_Num: 0
GRB_RA:          301.032d {+20h 04m 08s} (J2000),
                 301.061d {+20h 04m 15s} (current),
                 300.911d {+20h 03m 39s} (1950)
GRB_DEC:         +65.397d {+65d 23' 51"} (J2000),
                 +65.432d {+65d 25' 56"} (current),
                 +65.254d {+65d 15' 15"} (1950)
GRB_DATE:        15970 TJD;    44 DOY;   12/02/13
GRB_TIME:        1639.53 SOD {00:27:19.53} UT
TRIGGER_INDEX:   137
GRB_PHI:         130.91 [deg]
GRB_THETA:         5.78 [deg]
DELTA_TIME:      58.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     25.29 [sigma]
IMAGE_SIGNIF:    13.83 [sigma]
LC_URL:          sw00514767000msb.lc
SUN_POSTN:       326.02d {+21h 44m 05s}  -13.62d {-13d 37' 12"}
SUN_DIST:         81.25 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.96d {+13h 51m 50s}  -15.04d {-15d 02' 28"}
MOON_DIST:       104.94 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:        9.10, 77.45 [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 a rate 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 = 182.12,-12.08 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:33:50 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.036d {+20h 04m 09s} (J2000)
POINT_DEC:       +65.393d {+65d 23' 34"} (J2000)
POINT_ROLL:      155.469d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1698.31 SOD {00:28:18.31} UT,   58.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        7.415
N_STARS:         66
X_OFFSET:        432 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1391 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      24
PHOTO_THRESH:    14
SL_URL:          sw00514767000msufc0058.fits
SUN_POSTN:       326.02d {+21h 44m 05s}  -13.62d {-13d 37' 10"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.99d {+13h 51m 57s}  -15.05d {-15d 02' 58"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.08, 77.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:34:20 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.036d {+20h 04m 09s} (J2000)
POINT_DEC:       +65.393d {+65d 23' 34"} (J2000)
POINT_ROLL:      155.469d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1698.31 SOD {00:28:18.31} UT,   58.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        7.415
N_STARS:         66
X_OFFSET:        432 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1391 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      24
PHOTO_THRESH:    14
SL_URL:          sw00514767000msufc0058.fits
SUN_POSTN:       326.02d {+21h 44m 05s}  -13.62d {-13d 37' 09"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      207.99d {+13h 51m 58s}  -15.05d {-15d 03' 03"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.08, 77.44 [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:     Mon 13 Feb 12 00:36:11 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.036d {+20h 04m 09s} (J2000)
POINT_DEC:       +65.393d {+65d 23' 34"} (J2000)
ROLL:            155.469d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1698.31 SOD {00:28:18.31} UT,   58.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     350785706
X_OFFSET:        673 [pixels]
Y_OFFSET:        952 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       833
Y_GRB_POS:       1112
BINNING_INDEX:   1
IM_URL:          sw00514767000msuni0066.fits
SUN_POSTN:       326.02d {+21h 44m 06s}  -13.62d {-13d 37' 08"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.01d {+13h 52m 03s}  -15.06d {-15d 03' 22"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.08, 77.44 [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:     Mon 13 Feb 12 00:36:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.036d {+20h 04m 09s} (J2000)
POINT_DEC:       +65.393d {+65d 23' 34"} (J2000)
ROLL:            155.469d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1698.31 SOD {00:28:18.31} UT,   58.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     350785706
X_OFFSET:        673 [pixels]
Y_OFFSET:        952 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       833
Y_GRB_POS:       1112
BINNING_INDEX:   1
IM_URL:          sw00514767000msuni0066.fits
SUN_POSTN:       326.02d {+21h 44m 06s}  -13.62d {-13d 37' 07"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.01d {+13h 52m 04s}  -15.06d {-15d 03' 26"}
MOON_DIST:       104.93 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.08, 77.44 [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 #12942
T. Sakamoto (NASA/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), E. A. Hoversten (PSU), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (NASA/GSFC), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU) and M. C. Stroh (PSU) report on behalf of the Swift Team:
At 00:27:19 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 120213A (trigger=514767). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 301.032, +65.397, which is
```
   RA(J2000)  =  20h 04m 08s
   Dec(J2000) = +65d 23' 51"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single FRED pulse with a duration of about 40 sec. The peak count rate was ~3200 counts/sec (15-350 keV), at ~4 sec after the trigger.
The XRT began observing the field at 00:28:09.0 UT, 49.5 seconds after the BAT trigger. XRT found a bright, uncatalogued, fading X-ray source located at RA, Dec 301.0105, 65.4092 which is equivalent to:
```
   RA(J2000)  = +20h 04m 2.52s
   Dec(J2000) = +65d 24' 33.1"
```
with an uncertainty of 5.2 arcseconds (radius, 90% containment). This location is 54 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
The initial flux in the 0.1 s image was 4.08e-08 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 58 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 0.22.
Burst Advocate for this burst is T. Sakamoto (Taka.Sakamoto AT nasa.gov). 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:     Mon 13 Feb 12 00:41:33 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
POINT_ROLL:      155.467d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1910.54 SOD {00:31:50.54} UT,   271.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        2.700
N_STARS:         43
X_OFFSET:        353 [pixels]
Y_OFFSET:        632 [pixels]
X_MAX:           1312 [pixels]
Y_MAX:           1591 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw00514767000msufc0271.fits
SUN_POSTN:       326.03d {+21h 44m 06s}  -13.62d {-13d 37' 03"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.06d {+13h 52m 15s}  -15.07d {-15d 04' 17"}
MOON_DIST:       104.92 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:41:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
POINT_ROLL:      155.467d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1910.54 SOD {00:31:50.54} UT,   271.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        2.700
N_STARS:         43
X_OFFSET:        353 [pixels]
Y_OFFSET:        632 [pixels]
X_MAX:           1312 [pixels]
Y_MAX:           1591 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw00514767000msufc0271.fits
SUN_POSTN:       326.03d {+21h 44m 06s}  -13.62d {-13d 37' 03"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.07d {+13h 52m 16s}  -15.07d {-15d 04' 20"}
MOON_DIST:       104.92 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [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:     Mon 13 Feb 12 00:42:56 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
ROLL:            155.467d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1910.54 SOD {00:31:50.54} UT,   271.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     350785918
X_OFFSET:        673 [pixels]
Y_OFFSET:        952 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       833
Y_GRB_POS:       1112
BINNING_INDEX:   1
IM_URL:          sw00514767000msuni0279.fits
SUN_POSTN:       326.03d {+21h 44m 07s}  -13.62d {-13d 37' 02"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.08d {+13h 52m 19s}  -15.08d {-15d 04' 32"}
MOON_DIST:       104.92 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [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:     Mon 13 Feb 12 00:43:09 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
ROLL:            155.467d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1910.54 SOD {00:31:50.54} UT,   271.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     350785918
X_OFFSET:        673 [pixels]
Y_OFFSET:        952 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       833
Y_GRB_POS:       1112
BINNING_INDEX:   1
IM_URL:          sw00514767000msuni0279.fits
SUN_POSTN:       326.03d {+21h 44m 07s}  -13.62d {-13d 37' 02"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.08d {+13h 52m 19s}  -15.08d {-15d 04' 34"}
MOON_DIST:       104.92 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:45:22 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
POINT_ROLL:      155.466d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  2516.39 SOD {00:41:56.39} UT,   876.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.421
N_STARS:         190
X_OFFSET:        113 [pixels]
Y_OFFSET:        392 [pixels]
X_MAX:           1552 [pixels]
Y_MAX:           1831 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    11
SL_URL:          sw00514767000msufc0876.fits
SUN_POSTN:       326.03d {+21h 44m 07s}  -13.62d {-13d 37' 00"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.10d {+13h 52m 24s}  -15.08d {-15d 04' 57"}
MOON_DIST:       104.91 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:45:40 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
POINT_ROLL:      155.466d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  2516.39 SOD {00:41:56.39} UT,   876.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.421
N_STARS:         190
X_OFFSET:        113 [pixels]
Y_OFFSET:        392 [pixels]
X_MAX:           1552 [pixels]
Y_MAX:           1831 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    11
SL_URL:          sw00514767000msufc0876.fits
SUN_POSTN:       326.03d {+21h 44m 07s}  -13.62d {-13d 37' 00"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.10d {+13h 52m 25s}  -15.08d {-15d 05' 00"}
MOON_DIST:       104.91 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [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:     Mon 13 Feb 12 00:46:54 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
ROLL:            155.466d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  2516.39 SOD {00:41:56.39} UT,   876.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     350786524
X_OFFSET:        672 [pixels]
Y_OFFSET:        951 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       832
Y_GRB_POS:       1111
BINNING_INDEX:   1
IM_URL:          sw00514767000msuni0884.fits
SUN_POSTN:       326.03d {+21h 44m 07s}  -13.62d {-13d 36' 59"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.12d {+13h 52m 28s}  -15.09d {-15d 05' 12"}
MOON_DIST:       104.91 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:47:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     514767,   Seg_Num: 0
POINT_RA:        301.033d {+20h 04m 08s} (J2000)
POINT_DEC:       +65.391d {+65d 23' 29"} (J2000)
ROLL:            155.466d
IMG_START_DATE:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  2516.39 SOD {00:41:56.39} UT,   876.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     350786524
X_OFFSET:        672 [pixels]
Y_OFFSET:        951 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       832
Y_GRB_POS:       1111
BINNING_INDEX:   1
IM_URL:          sw00514767000msuni0884.fits
SUN_POSTN:       326.03d {+21h 44m 07s}  -13.62d {-13d 36' 58"}
SUN_DIST:         81.24 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.12d {+13h 52m 29s}  -15.09d {-15d 05' 15"}
MOON_DIST:       104.91 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.44, 17.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        9.07, 77.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 13 Feb 12 00:51:43 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     514767,   Seg_Num: 0
GRB_RA:          301.0119d {+20h 04m 02.85s} (J2000),
                 301.0407d {+20h 04m 09.77s} (current),
                 300.8914d {+20h 03m 33.94s} (1950)
GRB_DEC:         +65.4111d {+65d 24' 39.9"} (J2000),
                 +65.4459d {+65d 26' 45.1"} (current),
                 +65.2679d {+65d 16' 04.4"} (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:  15970 TJD;    44 DOY;   12/02/13
IMG_START_TIME:  1984.00 SOD {00:33:04.00} UT,   344.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       326.03d {+21h 44m 08s}  -13.62d {-13d 36' 55"}
SUN_DIST:         81.26 [deg]   Sun_angle= 1.7 [hr] (West of Sun)
MOON_POSTN:      208.16d {+13h 52m 39s}  -15.10d {-15d 06' 02"}
MOON_DIST:       104.90 [deg]
MOON_ILLUM:      69 [%]
GAL_COORDS:       98.45, 17.41 [deg] galactic lon,lat of the burst
ECL_COORDS:        9.14, 77.46 [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 1.1% < P(seren) < 2.8%.

GCN Circular #12944
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Using promptly downlinked XRT event data for GRB 120213A, we find an enhanced XRT position of the afterglow: RA, Dec: 301.0128, 65.4110 which is equivalent to:
```
   RA (J2000)  = 20 04 03.07
   Dec (J2000) = +65 24 39.6
```
with an uncertainty of 2.1 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/514767.
Position enhancement is is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular is an official product of the Swift-XRT team.
GCN Circular #12945
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
V.Krushinski, I.Zalozhnich, A. Popov Ural State University, Kourovka
K.Ivanov, S.Yazev, N.M.Budnev, E.Konstantinov, V.Lenok, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
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 Kislovodsk was pointed to the GRB120213A 26 sec. after notice time and 49 sec. after GRB time at 2012-02-13 00:28:08.528 UT in two polarizations. On our first (10s exposure) set we haven`t found optical transient within SWIFT error-box (ra=20 04 07 dec=+65 23 59 r=0.050000). The 5-sigma upper limit has been about 16.15mag The message may be cited.
GCN Circular #12946
W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (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), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+841 sec from recent telemetry downlinks, we report further analysis of BAT GRB 120213A (trigger #514767) (Sakamoto, et al., GCN Circ. 12942). The BAT ground-calculated position is RA, Dec = 300.987, 65.413 deg, which is
```
   RA(J2000)  =  20h 03m 56.8s 
   Dec(J2000) = +65d 24' 48.0" 
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows a single FRED-like pulse starting at ~T-7 sec, peaking at ~T+5 sec, and ending at ~T+75 sec. T90 (15-350 keV) is 48.9 +- 12.0 sec (estimated error including systematics).
The time-averaged spectrum from T-6.31 to T+74.46 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.37 +- 0.09. The fluence in the 15-150 keV band is 1.9 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+5.44 sec in the 15-150 keV band is 1.7 +- 0.1 ph/cm2/sec. 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/514767/BA/
GCN Circular #12948
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 2431 s of XRT Photon Counting mode data and 5 UVOT images for GRB 120213A, 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 = 301.01211, +65.41135 which is equivalent to:
```
RA (J2000): 20h 04m 2.91s
Dec (J2000): +65d 24' 40.9"
```
with an uncertainty of 1.7 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 #12951
S. R. Oates (MSSL-UCL) and T. Sakamoto (NASA/UMBC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 120213A 59 s after the BAT trigger (Sakamoto et al., GCN Circ. 12942). No optical afterglow consistent with the XRT position (Beardmore et al., GCN Circ. 12948) 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            59          209          147         >19.8
u_FC               271          521          246         >19.7
white               59        12944         1454         >21.6
v                  602         6546          294         >20.4
b                  527        12032         1219         >20.5
u                  271         7161          717         >20.6
w1                 653         6956          471         >19.8
m2                6551         6751          197         >19.8
w2                 578        13010          332         >20.1
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.22 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #12952
J.A. Kennea (PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), O.M. Littlejohns (U. Leicester), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), G. Stratta (ASDC) and T. Sakamoto report on behalf of the Swift-XRT team:
We have analysed 6.5 ks of XRT data for GRB 120213A (Sakamoto et al. GCN Circ. 12942), from 53 s to 22.8 ks after the BAT trigger. The data comprise 886 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Beardmore et al. (GCN. Circ 12944).
The late-time light curve (from T0+5.3 ks) can be modelled with a power-law decay with a decay index of alpha=3.02 (+0.19, -0.18).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 3.28 (+/-0.07). The best-fitting absorption column is 3.52 (+0.15, -0.14) x 10^21 cm^-2, in excess of the Galactic value of 1.0 x 10^21 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 2.22 (+/-0.15) and a best-fitting absorption column of 1.7 (+/-0.4) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x 10^-11 (5.4 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     1.7 (+/-0.4) x 10^21 cm^-2
Galactic foreground: 1.0 x 10^21 cm^-2
Excess significance: 3.2 sigma
Photon index:	     2.22 (+/-0.15)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00514767.
This circular is an official product of the Swift-XRT team.

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Jochen Greiner, last update: 13-Feb-2012 [Disclaimer]