Gamma-ray Burst 061222

(All information courtesy of the instrument teams.)

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:29:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     252588,   Seg_Num: 0
GRB_RA:          358.243d {+23h 52m 58s} (J2000),
                 358.331d {+23h 53m 20s} (current),
                 357.613d {+23h 50m 27s} (1950)
GRB_DEC:         +46.526d {+46d 31' 34"} (J2000),
                 +46.565d {+46d 33' 54"} (current),
                 +46.248d {+46d 14' 53"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       16544 [cnts]    Image_Peak=319 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   298     E_range: 25-100 keV
BKG_INTEN:       142840 [cnts]
BKG_TIME:        12478.35 SOD {03:27:58.35} UT
BKG_DUR:         40 [sec]
GRB_DATE:        14091 TJD;   356 DOY;   06/12/22
GRB_TIME:        12532.11 SOD {03:28:52.11} UT
GRB_PHI:         -136.10 [deg]
GRB_THETA:        28.05 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.37 [sigma]
IMAGE_SIGNIF:    7.21 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2 +12  +0  +0 +26  +1 
SUN_POSTN:       270.14d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.60 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.83d {+19h 27m 18s}  -26.37d {-26d 22' 13"}
MOON_DIST:        94.41 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.57,-15.17 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       21.39, 42.39 [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 = 204.04,10.61 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:30:59 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     252588,   Seg_Num: 0
GRB_RA:          358.2686d {+23h 53m 04.4s} (J2000),
                 358.3567d {+23h 53m 25.6s} (current),
                 357.6385d {+23h 50m 33.2s} (1950)
GRB_DEC:         +46.5347d {+46d 32' 04.9"} (J2000),
                 +46.5735d {+46d 34' 24.6"} (current),
                 +46.2565d {+46d 15' 23.3"} (1950)
GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       22 [cnts]
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12633.13 SOD {03:30:33.13} UT,   101.0 [sec] since BAT Trigger Time
CENTROID_X:      345.21,  raw= 345  [pixels]
CENTROID_Y:      290.59,  raw= 291  [pixels]
ROLL:            252.11 [deg]
GAIN:            1
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -17.44
GRB_POS_XRT_Z:   101.15
IMAGE_URL:       sw00252588000msxps_rw.img
SUN_POSTN:       270.14d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.62 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.84d {+19h 27m 22s}  -26.37d {-26d 22' 03"}
MOON_DIST:        94.42 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.59,-15.16 [deg] galactic lon,lat of the burst
ECL_COORDS:       21.41, 42.39 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:30:59 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     252588,   Seg_Num: 0
GRB_RA:          358.2686d {+23h 53m 04.4s} (J2000),
                 358.3567d {+23h 53m 25.6s} (current),
                 357.6385d {+23h 50m 33.2s} (1950)
GRB_DEC:         +46.5347d {+46d 32' 04.9"} (J2000),
                 +46.5735d {+46d 34' 24.6"} (current),
                 +46.2565d {+46d 15' 23.3"} (1950)
GRB_ERROR:       6.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.51e-08 [erg/cm2/sec]
GRB_SIGNIF:      4.69 [sigma]
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12633.13 SOD {03:30:33.13} UT,   101.0 [sec] since BAT Trigger Time
TAM[0-3]:        327.61 237.20 261.45 243.16
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       270.14d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.62 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.84d {+19h 27m 22s}  -26.37d {-26d 22' 03"}
MOON_DIST:        94.42 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.59,-15.16 [deg] galactic lon,lat of the burst
ECL_COORDS:       21.41, 42.39 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:31:03 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     252588,   Seg_Num: 0
GRB_RA:          358.2686d {+23h 53m 04.4s} (J2000),
                 358.3567d {+23h 53m 25.6s} (current),
                 357.6385d {+23h 50m 33.2s} (1950)
GRB_DEC:         +46.5347d {+46d 32' 04.9"} (J2000),
                 +46.5735d {+46d 34' 24.6"} (current),
                 +46.2565d {+46d 15' 23.3"} (1950)
GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       22 [cnts]
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12633.13 SOD {03:30:33.13} UT,   101.0 [sec] since BAT Trigger Time
CENTROID_X:      345.21,  raw= 345  [pixels]
CENTROID_Y:      290.59,  raw= 291  [pixels]
ROLL:            252.11 [deg]
GAIN:            1
MODE:            2, Short Image mode
WAVEFORM:        134
EXPO_TIME:       0.10 [sec]
GRB_POS_XRT_Y:   -17.44
GRB_POS_XRT_Z:   101.15
IMAGE_URL:       sw00252588000msxps_rw.img
SUN_POSTN:       270.15d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.62 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.84d {+19h 27m 22s}  -26.37d {-26d 22' 03"}
MOON_DIST:        94.42 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.59,-15.16 [deg] galactic lon,lat of the burst
ECL_COORDS:       21.41, 42.39 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:32:17 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     252588,   Seg_Num: 0
GRB_RA:          358.243d {+23h 52m 58s} (J2000),
                 358.331d {+23h 53m 20s} (current),
                 357.613d {+23h 50m 27s} (1950)
GRB_DEC:         +46.526d {+46d 31' 34"} (J2000),
                 +46.565d {+46d 33' 54"} (current),
                 +46.248d {+46d 14' 53"} (1950)
GRB_DATE:        14091 TJD;   356 DOY;   06/12/22
GRB_TIME:        12532.11 SOD {03:28:52.11} UT
TRIGGER_INDEX:   298
GRB_PHI:         -136.10 [deg]
GRB_THETA:        28.05 [deg]
DELTA_TIME:      64.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.37 [sigma]
IMAGE_SIGNIF:    7.21 [sigma]
LC_URL:          sw00252588000msb.lc
SUN_POSTN:       270.15d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.60 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.85d {+19h 27m 25s}  -26.37d {-26d 21' 55"}
MOON_DIST:        94.39 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.57,-15.17 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       21.39, 42.39 [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 = 204.04,10.61 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:32:48 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.229d {+23h 52m 55s} (J2000)
POINT_DEC:       +46.519d {+46d 31' 09"} (J2000)
POINT_ROLL:      252.110d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12641.78 SOD {03:30:41.78} UT,   109.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.712
N_STARS:         190
X_OFFSET:        424 [pixels]
Y_OFFSET:        600 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1559 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0109.fits
SUN_POSTN:       270.15d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.86d {+19h 27m 26s}  -26.36d {-26d 21' 52"}
MOON_DIST:        94.38 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:33:17 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.229d {+23h 52m 55s} (J2000)
POINT_DEC:       +46.519d {+46d 31' 09"} (J2000)
POINT_ROLL:      252.110d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12641.78 SOD {03:30:41.78} UT,   109.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.712
N_STARS:         190
X_OFFSET:        424 [pixels]
Y_OFFSET:        600 [pixels]
X_MAX:           1383 [pixels]
Y_MAX:           1559 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0109.fits
SUN_POSTN:       270.15d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.86d {+19h 27m 27s}  -26.36d {-26d 21' 48"}
MOON_DIST:        94.38 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:34:04 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.229d {+23h 52m 55s} (J2000)
POINT_DEC:       +46.519d {+46d 31' 09"} (J2000)
ROLL:            252.110d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12641.78 SOD {03:30:41.78} UT,   109.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     188451043
X_OFFSET:        634 [pixels]
Y_OFFSET:        1004 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       794
Y_GRB_POS:       1164
BINNING_INDEX:   1
IM_URL:          sw00252588000msuni0109.fits
SUN_POSTN:       270.15d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.87d {+19h 27m 29s}  -26.36d {-26d 21' 43"}
MOON_DIST:        94.37 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:34:21 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.229d {+23h 52m 55s} (J2000)
POINT_DEC:       +46.519d {+46d 31' 09"} (J2000)
ROLL:            252.110d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12641.78 SOD {03:30:41.78} UT,   109.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     188451043
X_OFFSET:        634 [pixels]
Y_OFFSET:        1004 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       794
Y_GRB_POS:       1164
BINNING_INDEX:   1
IM_URL:          sw00252588000msuni0109.fits
SUN_POSTN:       270.15d {+18h 00m 35s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.88d {+19h 27m 30s}  -26.36d {-26d 21' 42"}
MOON_DIST:        94.37 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:40:42 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 18"} (J2000)
POINT_ROLL:      252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  12747.16 SOD {03:32:27.16} UT,   215.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.570
N_STARS:         190
X_OFFSET:        314 [pixels]
Y_OFFSET:        684 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1643 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0215.fits
SUN_POSTN:       270.15d {+18h 00m 37s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.94d {+19h 27m 46s}  -26.35d {-26d 21' 01"}
MOON_DIST:        94.32 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:45:06 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
POINT_ROLL:      252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13386.78 SOD {03:43:06.78} UT,   854.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.554
N_STARS:         190
X_OFFSET:        314 [pixels]
Y_OFFSET:        684 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1643 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0854.fits
SUN_POSTN:       270.16d {+18h 00m 37s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.99d {+19h 27m 57s}  -26.34d {-26d 20' 32"}
MOON_DIST:        94.29 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:45:33 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
POINT_ROLL:      252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13386.78 SOD {03:43:06.78} UT,   854.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.554
N_STARS:         190
X_OFFSET:        314 [pixels]
Y_OFFSET:        684 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1643 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0854.fits
SUN_POSTN:       270.16d {+18h 00m 37s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      291.99d {+19h 27m 58s}  -26.34d {-26d 20' 29"}
MOON_DIST:        94.29 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:46:30 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
ROLL:            252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13386.78 SOD {03:43:06.78} UT,   854.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     188451788
X_OFFSET:        633 [pixels]
Y_OFFSET:        1003 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       793
Y_GRB_POS:       1163
BINNING_INDEX:   1
IM_URL:          sw00252588000msuni0854.fits
SUN_POSTN:       270.16d {+18h 00m 38s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      292.00d {+19h 28m 00s}  -26.34d {-26d 20' 23"}
MOON_DIST:        94.28 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:46:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
ROLL:            252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13386.78 SOD {03:43:06.78} UT,   854.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     188451788
X_OFFSET:        633 [pixels]
Y_OFFSET:        1003 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       793
Y_GRB_POS:       1163
BINNING_INDEX:   1
IM_URL:          sw00252588000msuni0854.fits
SUN_POSTN:       270.16d {+18h 00m 38s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      292.00d {+19h 28m 01s}  -26.34d {-26d 20' 21"}
MOON_DIST:        94.28 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:51:51 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
POINT_ROLL:      252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13491.96 SOD {03:44:51.96} UT,   959.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.547
N_STARS:         190
X_OFFSET:        314 [pixels]
Y_OFFSET:        684 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1643 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0959.fits
SUN_POSTN:       270.16d {+18h 00m 39s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      292.06d {+19h 28m 13s}  -26.33d {-26d 19' 48"}
MOON_DIST:        94.24 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 22 Dec 06 03:52:20 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
POINT_ROLL:      252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13491.96 SOD {03:44:51.96} UT,   959.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.547
N_STARS:         190
X_OFFSET:        314 [pixels]
Y_OFFSET:        684 [pixels]
X_MAX:           1273 [pixels]
Y_MAX:           1643 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00252588000msufc0959.fits
SUN_POSTN:       270.16d {+18h 00m 39s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      292.06d {+19h 28m 15s}  -26.33d {-26d 19' 45"}
MOON_DIST:        94.24 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:53:11 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
ROLL:            252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13491.96 SOD {03:44:51.96} UT,   959.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     188451893
X_OFFSET:        633 [pixels]
Y_OFFSET:        1003 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       793
Y_GRB_POS:       1163
BINNING_INDEX:   1
IM_URL:          sw00252588000msuni0959.fits
SUN_POSTN:       270.16d {+18h 00m 39s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      292.07d {+19h 28m 17s}  -26.33d {-26d 19' 40"}
MOON_DIST:        94.23 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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:     Fri 22 Dec 06 03:53:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     252588,   Seg_Num: 0
POINT_RA:        358.232d {+23h 52m 56s} (J2000)
POINT_DEC:       +46.522d {+46d 31' 17"} (J2000)
ROLL:            252.114d
IMG_START_DATE:  14091 TJD;   356 DOY;   06/12/22
IMG_START_TIME:  13491.96 SOD {03:44:51.96} UT,   959.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     188451893
X_OFFSET:        633 [pixels]
Y_OFFSET:        1003 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       793
Y_GRB_POS:       1163
BINNING_INDEX:   1
IM_URL:          sw00252588000msuni0959.fits
SUN_POSTN:       270.16d {+18h 00m 39s}  -23.44d {-23d 26' 15"}
SUN_DIST:        105.58 [deg]   Sun_angle= -5.9 [hr] (East of Sun)
MOON_POSTN:      292.07d {+19h 28m 17s}  -26.33d {-26d 19' 38"}
MOON_DIST:        94.23 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      112.56,-15.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       21.37, 42.39 [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 Circular #5954
D. Grupe (PSU), L. M. Barbier (NASA/GSFC), P. J. Brown (PSU), M. M. Chester (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), S. T. Holland (CRESST/GSFC/USRA), J. A. Kennea (PSU), F. E. Marshall (NASA/GSFC), K. M. McLean (LANL/UTD), D. M. Palmer (LANL), J. L. Racusin (PSU) and M. Stamatikos (NASA/ORAU) report on behalf of the Swift Team:
At 03:28:52 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 061222 (trigger=252588). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 358.243, +46.526 which is
```
   RA(J2000) = 23h 52m 58s
   Dec(J2000) = +46d 31' 34"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed three peaks of increasing size from about 0 to 10, 25 to 35 and 70 to 110 seconds after the trigger. The peak count rate was ~13000 counts/sec (15-350 keV), at ~86 sec after the trigger.
The XRT began observing the field at 03:30:33 UT, 101 seconds after the BAT trigger. XRT found a bright, fading, uncatalogued X-ray source located at
```
  RA(J2000) = 23h 53m 03.45s, 
  Dec(J2000) = +46d 32' 00.4", 
```
with an estimated uncertainty of 3.7 arcseconds (90% confidence radius). This location is 59 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 0.1s image was 1.5e-08 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 110 seconds after the BAT trigger, and a finding chart exposure of 400 seconds with the V filter starting 215 seconds after the BAT trigger. No 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 3-sigma upper limit in the White image is 19.7 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 0.10.
GCN Circular #5955
E.S. Rykoff (U Mich), F. Yuan (U Mich), B. E. Schaefer (Louisiana State), report on behalf of the ROTSE collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 061222A (Swift trigger 252588, GCN 5954, Gruppe, et al), producing images beginning 7.3 s after the GCN notice time. An automated response took the first image at 03:29:39.3 UT, 47.1 s after the burst, under excellent conditions. We took 10 5-sec, 10 20-sec and 10+ 60-sec exposures. These unfiltered images are calibrated relative to USNO A2.0 (R). We note that several of our images, with limiting magnitudes ~17.0, overlap the main peak in the BAT emission. Imaging is ongoing.
Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma BAT error circle or the XRT error circle, for both single images and coadding into sets of 10; however, we are limited as the field is somewhat crowded. Individual images have limiting magnitudes ranging from 16.5-18.0; we set the following specific limits.
```
start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?
--------------------------------------------------------------------
03:29:39.4   03:29:44.4         5     16.5           47.2       N
03:30:14.4   03:30:19.4         5     17.0           82.2       N
03:30:21.4   03:30:26.4         5     17.0           89.2       N
03:29:39.4   03:30:47.4        68     18.1           47.2       Y
03:30:55.4   03:35:50.8       295     18.5          123.2       Y
```
GCN Circular #5964
GRB 061222A, Swift-BAT refined analysis
J. Tueller (GSFC), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), T. Ukwatta (UMD) on behalf of the Swift-BAT team:
Using the data set from T-240 to T+302 sec from the recent telemetry downlink, we report further analysis of BAT GRB 061222A (trigger #252588) (Grupe, et al., GCN Circ. 5954). The BAT ground-calculated position is RA, Dec = 358.258, 46.527 deg which is
```
   RA(J2000)  = 23h 53m  1.9s 
   Dec(J2000) = 46d 31' 37.3" 
```
with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 70%.
The mask-weighted lightcurve shows the emision starting at T-100 sec with a small peak at T_zero, and then a 10-sec FRED peak starting at T+25 sec. It is followed by two 10-sec peaks at T+50 and T+65 sec; then a large peak at T+88 sec with a FWHM of ~12 sec and the emission returns to background at T+115 sec. T90 (15-350 keV) is 72 +- 3 sec (estimated error including systematics). At this time, there is a gap in the downlinked data from T-180 sec to T-110. A further Circular will be issued if there is burst activity in this interval.
The time-averaged spectrum from T-2.5 to T+117.7 is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.39 +- 0.04. The fluence in the 15-150 keV band is 8.3 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+86.54 sec in the 15-150 keV band is 9.2 +- 0.3 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Circular #5966
D. Grupe (PSU) reports on behalf of the Swift/XRT team
We have analyzed the first orbit of GRB 061222A (Grupe et al., GCN 5954) with total observing times of 117s in Windowed Timing mode and 1476s in Photon Counting mode in the Swift XRT. The Photon Counting mode image provides a refined XRT position at RA, Dec= 358.263708, +46.53297, which is
```
RA(J2000) = 23h 53m 03.29s
Dec(J2000) = +46d 31' 58.7"
```
with an error of 3.5" (90% confidence). This position is 2.4" away from the preliminary XRT position reported in GCN 5954.
The X-ray light curve displays the end of a flare as seen in the BAT (at the beginning of the XRT observation this flare had an initial count rate of about 100 counts/s) and decays with a slope of 0.26+/-0.03.
Spectral fits to the Windowed Timing mode data show an absorption column density significantly in excess of the Galactic value (1.01e21 cm**-2) with an excess absorption column density of (3.7+/-0.3)e21 cm**-2 and a energy spectral slope beta-x=1.34+/-0.08. Following the relation given in Grupe et al. 2006 (AJ submitted, astro-ph/0612104) the high excess absorption column density suggests that this burst is at a redshift z<3.0.
Even though the observations were shortly interrupted by a new burst, GRB 06122B (Racusin et al., GCN 5957), we continue observing GRB 061222A with Swift throughout the next hours. More analysis of the data will be presented in the GCN report.
This circular is an official product of the Swift XRT team.
GCN Circular #5969
M. Uemura, A. Arai, and T. Uehara (Hiroshima Univ.), report on behalf of the KANATA GRB team:
We perfomed optical imaging of the field of GRB061222A (GCN 5954, 5964, 5966) at 9:43-10:05 UT 22 Dec. using the TRISPEC attached to the KANATA 1.5-m telescope at Higashi-Hiroshima Observatory, Japan. We obtained 7 R-band images with a 123-s exposure time. The images were calibrated with neighbor stars in the USNO A2.0 catalog (r mag.).
No new object was found within the XRT error circle. The limit magnitude is estimated to be 21.6 (3-sigma).
```
UT            Time after the burst (s)    Limit mag in R   Exp. Time
Dec. 22.41537        23355                    21.6          123 * 7
```

GCN Circular #5973
S.R Oates(UCL-MSSL), D. Grupe(PSU), S.B.Pandey(UCL-MSSL) report on the behalf of the Swift UVOT team:
The Swift/UVOT began observing the field of GRB 061222A 92 seconds after the BAT trigger (Grupe et al., GCN Circ.5954). No optical afterglow candidate is detected in the XRT error circle within the first V and White exposures or in later coadded images.
The 3 sigma upper limits for each UVOT filter are given below:

Filter        Tstart    Tend     Exposure    3sigUL
-------------------------------------------------
V finding       215     615       393        19.6
White finding   111     209       97         20.0

V               745      24842    5310       20.4
B               693      24112    2713       20.8
U               669      1591     78         19.4
w1              645      1711     83         19.2
m2              621      1701     97         19.3
w2              721      1653     58         19.3
White           110      1629     322        20.6
-------------------------------------------------

The values quoted above are not corrected for the expected Galactic extinction of E_{B-V} = 0.099 mag (Schlegel et al. 1998).

GCN Circular #5975
S. B. Cenko (Caltech) and D. B. Fox (Penn State) report on behalf of a larger collaboration:
We have imaged the field of GRB061222A (Grupe et al, GCN 5954) with the Near-Infrared Imager mounted on the Gemini-North telescope. Observations were taken in the Ks filter at a mean epoch of ~ 5:50 Dec. 22 UT. Inside the revised XRT error circle (Grupe et al, GCN 5966), we find one faint source at location (J2000.0):
```
	RA: 23:53:03.40
        Dec: +46:31:58.5
```
(+/- 1.0"). Based on several 2MASS stars in the field, we measure a magnitude of Ks ~ 20.5, with large uncertainty dominated by both the faintness of the object and photometric uncertainty. At this point we cannot determine if the object is variable or not.
Further observations are planned.
GCN Circular #5976
M.Zhai, L.P. Xin, Y.L. Qiu, J.Y. Wei, J.Y. Hu, J.S. Deng and W.K. Zheng on behalf of EAFON report:
We have imaged the field of GRB 061222A with the 2.16m telescope at Xinglong Observatory. A 30 minutes R band image is obtained 9.97 hours after the burst.The afterglow candidate (S.B. Cenko et al., GCN5975) was not detected and no new source was seen with 3-simga limit magnitude R~22.4 derived from USNO B1.0
This message may be cited.
GCN Circular #5978
S. B. Cenko (Caltech) and D. B. Fox (Penn State) report on behalf of a larger collaboration:
We have further refined the processing of our first epoch of Gemini Ks-band imaging of GRB061222A (see GCN 5975). Using 12 2MASS stars in the field, we report a refined position for the afterglow candidate of:
```
	RA: 23:53:03.419
	Dec: +46:31:58.60
```
with an uncertainty of +/- 0.2" in each coordinate (J2000.0). Using our full set of Ks-band images, we calculate a magnitude of Ks = 20.7 +/- 0.3 at a mean epoch of 5:35 Dec. 22 UT (~ 2.1 hr after the burst).
We obtained a second epoch of Ks-band imaging from Gemini on the following evening (mean epoch 4:53 Dec. 23 UT, ~ 25.4 hr after the burst). The object reported above faded by ~ 1.2 mag, confirming this source as the afterglow of GRB061222A. The corresponding decay rate is quite shallow, with a decay index alpha ~ 0.4 (assuming no contribution from the host galaxy).
GCN Report 22.1
GCN_Report 22.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_22_1.pdf by D.Grupe at PSU titled: "Swift observations of GRB 061222A"
GCN Circular #5979
T. Ishimura, Y. Yatsu, T. Shimokawabe, N. Vasquez, and N. Kawai (TokyoTech) report on behalf of the MITSuME collaboration:
We observed the error box of GRB061222A (Grupe et al., GCN 5954) with the 3-color 50cm MITSuME Telescope at Akeno, Japan starting at 8:48:53 UT, 5.3 hours after the trigger. In the co-added images of Ic, Rc, and g' bands, we did not detect any new source in the XRT error circle. The 3-sigma limiting magnitudes based on USNO-B1.0 (I-band) and NOMAD (R-band,g'-band) stars are following.
```
Filter   start time   end time    Exp(s)    Mag (3-sigma upper limit)
-----------------------------------------------------------------
Ic        8:48:53    09:32:23     60s * 36         19.6 
Rc        8:48:53    09:32:23     60s *	36	   20.4 
g'        8:48:53    09:32:23     60s * 36	   20.6
-----------------------------------------------------------------
```
GCN Circular #5984
The most intense part of the long GRB 061222A(Swift-BAT trigger #252588; Grupe et al., GCN 5954; Tueller et al., GCN 5964) triggered Konus-Wind at T0=12614.682 s UT (03:30:14.682). The emission is clearly seen in the Konus-Wind data starting at T-T0~-80 s.
As observed by Konus-Wind the burst had a duration of ~100 s, fluence 2.66(-0.23, +0.43)x10^-5 erg/cm2, the 64-ms peak flux measured from T0+5.312 s 5.65(-1.19, +1.42)x10^-6 erg/cm2/s (both in the 20 keV - 2 MeV energy range).
The spectrum integrated over the most intense part of the burst (from T0 to T0+15.104 s) is well fitted (in the 20 keV - 2 MeV range) by GRBM (Band) model for which: the low-energy photon index is alpha = -0.94(-0.13, +0.14), the high energy photon index beta = -2.41(-1.21, +0.28), the peak energy Ep = 283(-42, +59) keV (chi2 = 64/60 dof). The fitting by a power law with exponential cutoff model: dN/dE ~ E^(-alpha)*exp(-E*(2-alpha)/Ep) in the same energy range yields alpha = 1.02(-0.11, +0.10) and Ep = 324(-41, +54) keV (chi2 = 67/61 dof).
All the quoted errors are at the 90% confidence level.
The Konus-Wind light curve of this GRB is available at http://www.ioffe.rssi.ru/LEA/GRBs/GRB061222_T12614/
GCN Circular #5986
Yu. Efimov, V. Rumyantsev (CrAO), A. Pozanenko (IKI), D. Sharapov (MAO) on behalf of larger GRB follow up collaboration report:
We observed error box of GRB061222a (Grupe et al., GCN 5954) with Shajn 2.6m telescope of CrAO. A set of 60 s exposures was taken on Dec. 22 in R between (UT) 18:28 - 19:29. We do not detect afterglow registered in Ks (Cenko et al., GCN 5975, GCN 5978). No object is also detected in refined XRT error box (Grupe, GCN 5966). Based on the USNO A2.0 star (23 53 02.73 +46 32 18.50 17.60 R) we estimate 3 sigma limiting magnitude of a combined image (48*60 s) as R=23.8.
Finding chart can be found in http://grb.rssi.ru/GRB061222a/GRB061222a_R_ZTSh.GIF
GCN Circular #5997
Poonam Chandra (NRAO/UVA) and Dale A. Frail (NRAO) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration:
"We used the Very Large Array to observe the field of view toward GRB 061222A (GCN 5954) at a frequency of 8.46 GHz on 2006 December 23 at 0.15 UT. The peak radio brightness at the XRT position (GCN 5966) is 285 uJy +- 68 uJy.
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
0905.0001from 1 May 2009
Perley et al: redshift z = 2.088

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Jochen Greiner, last update: 10-Jul-2009 [Disclaimer]