Gamma-ray Burst 111022B

(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:     Sat 22 Oct 11 17:22:24 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     506074,   Seg_Num: 0
GRB_RA:          108.951d {+07h 15m 48s} (J2000),
                 109.176d {+07h 16m 42s} (current),
                 107.999d {+07h 12m 00s} (1950)
GRB_DEC:         +49.666d {+49d 39' 59"} (J2000),
                 +49.645d {+49d 38' 41"} (current),
                 +49.755d {+49d 45' 16"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1752 [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:        15856 TJD;   295 DOY;   11/10/22
GRB_TIME:        61984.50 SOD {17:13:04.50} UT
GRB_PHI:         -14.00 [deg]
GRB_THETA:        30.69 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.16 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +0  +0  +0 +23  +0 
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 08"}
SUN_DIST:        103.43 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.79d {+10h 07m 10s}   +6.21d {+06d 12' 39"}
MOON_DIST:        56.21 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.78, 24.12 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      103.66, 27.12 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This Notice was delayed by more than 60 sec past the end of the trigger integration interval;  
COMMENTS:        probably due to it occurring during a Malindi downlink session.  
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 = 177.23,13.12 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:23:07 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     506074,   Seg_Num: 0
GRB_RA:          108.9649d {+07h 15m 51.57s} (J2000),
                 109.1894d {+07h 16m 45.44s} (current),
                 108.0127d {+07h 12m 03.05s} (1950)
GRB_DEC:         +49.6845d {+49d 41' 04.1"} (J2000),
                 +49.6630d {+49d 39' 46.8"} (current),
                 +49.7728d {+49d 46' 22.0"} (1950)
GRB_ERROR:       5.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       8.17e-10 [erg/cm2/sec]
GRB_SIGNIF:      6.16 [sigma]
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62121.79 SOD {17:15:21.79} UT,   137.3 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.22 261.47 243.54
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 08"}
SUN_DIST:        103.43 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.80d {+10h 07m 12s}   +6.21d {+06d 12' 29"}
MOON_DIST:        56.22 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.76, 24.14 [deg] galactic lon,lat of the burst
ECL_COORDS:      103.67, 27.14 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 1.21 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:23:16 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     506074,   Seg_Num: 0
GRB_RA:          108.9649d {+07h 15m 51.5s} (J2000),
                 109.1894d {+07h 16m 45.4s} (current),
                 108.0127d {+07h 12m 03.0s} (1950)
GRB_DEC:         +49.6845d {+49d 41' 04.1"} (J2000),
                 +49.6630d {+49d 39' 46.8"} (current),
                 +49.7728d {+49d 46' 22.0"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       38 [cnts]
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62121.79 SOD {17:15:21.79} UT,   137.3 [sec] since BAT Trigger Time
CENTROID_X:      286.14,  raw= 286  [pixels]
CENTROID_Y:      324.78,  raw= 325  [pixels]
ROLL:            91.24 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   63.13
GRB_POS_XRT_Z:   -41.37
IMAGE_URL:       sw00506074000msxps_rw.img
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 08"}
SUN_DIST:        103.43 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.80d {+10h 07m 12s}   +6.21d {+06d 12' 27"}
MOON_DIST:        56.22 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.76, 24.14 [deg] galactic lon,lat of the burst
ECL_COORDS:      103.67, 27.14 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:23:30 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     506074,   Seg_Num: 0
GRB_RA:          108.9649d {+07h 15m 51.5s} (J2000),
                 109.1894d {+07h 16m 45.4s} (current),
                 108.0127d {+07h 12m 03.0s} (1950)
GRB_DEC:         +49.6845d {+49d 41' 04.1"} (J2000),
                 +49.6630d {+49d 39' 46.8"} (current),
                 +49.7728d {+49d 46' 22.0"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       38 [cnts]
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62121.79 SOD {17:15:21.79} UT,   137.3 [sec] since BAT Trigger Time
CENTROID_X:      286.14,  raw= 286  [pixels]
CENTROID_Y:      324.78,  raw= 325  [pixels]
ROLL:            91.24 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   63.13
GRB_POS_XRT_Z:   -41.37
IMAGE_URL:       sw00506074000msxps_rw.img
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 09"}
SUN_DIST:        103.43 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.80d {+10h 07m 13s}   +6.21d {+06d 12' 24"}
MOON_DIST:        56.22 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.76, 24.14 [deg] galactic lon,lat of the burst
ECL_COORDS:      103.67, 27.14 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:23:45 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     506074,   Seg_Num: 0
GRB_RA:          108.951d {+07h 15m 48s} (J2000),
                 109.176d {+07h 16m 42s} (current),
                 107.999d {+07h 12m 00s} (1950)
GRB_DEC:         +49.666d {+49d 39' 59"} (J2000),
                 +49.645d {+49d 38' 41"} (current),
                 +49.755d {+49d 45' 16"} (1950)
GRB_DATE:        15856 TJD;   295 DOY;   11/10/22
GRB_TIME:        61984.50 SOD {17:13:04.50} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -14.00 [deg]
GRB_THETA:        30.69 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    9.16 [sigma]
LC_URL:          sw00506074000msb.lc
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 09"}
SUN_DIST:        103.43 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.80d {+10h 07m 13s}   +6.21d {+06d 12' 21"}
MOON_DIST:        56.22 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.78, 24.12 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      103.66, 27.12 [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 = 177.23,13.12 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:24:20 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.948d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.666d {+49d 39' 59"} (J2000)
POINT_ROLL:      91.239d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62129.24 SOD {17:15:29.24} UT,   144.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.571
N_STARS:         73
X_OFFSET:        504 [pixels]
Y_OFFSET:        552 [pixels]
X_MAX:           1463 [pixels]
Y_MAX:           1511 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00506074000msufc0144.fits
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 09"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.81d {+10h 07m 14s}   +6.20d {+06d 12' 13"}
MOON_DIST:        56.23 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:24:47 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.948d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.666d {+49d 39' 59"} (J2000)
POINT_ROLL:      91.239d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62129.24 SOD {17:15:29.24} UT,   144.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.571
N_STARS:         73
X_OFFSET:        504 [pixels]
Y_OFFSET:        552 [pixels]
X_MAX:           1463 [pixels]
Y_MAX:           1511 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00506074000msufc0144.fits
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 10"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.81d {+10h 07m 15s}   +6.20d {+06d 12' 07"}
MOON_DIST:        56.23 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:25:46 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.948d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.666d {+49d 39' 59"} (J2000)
ROLL:            91.239d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62129.24 SOD {17:15:29.24} UT,   144.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     340996536
X_OFFSET:        821 [pixels]
Y_OFFSET:        734 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       981
Y_GRB_POS:       894
BINNING_INDEX:   1
IM_URL:          sw00506074000msuni0152.fits
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 11"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.82d {+10h 07m 18s}   +6.20d {+06d 11' 55"}
MOON_DIST:        56.24 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:25:29 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.948d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.666d {+49d 39' 59"} (J2000)
ROLL:            91.239d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62129.24 SOD {17:15:29.24} UT,   144.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     340996536
X_OFFSET:        821 [pixels]
Y_OFFSET:        734 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       981
Y_GRB_POS:       894
BINNING_INDEX:   1
IM_URL:          sw00506074000msuni0152.fits
SUN_POSTN:       206.92d {+13h 47m 40s}  -11.10d {-11d 06' 10"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.82d {+10h 07m 17s}   +6.20d {+06d 11' 58"}
MOON_DIST:        56.24 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:30:23 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 09"} (J2000)
POINT_ROLL:      91.237d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62287.19 SOD {17:18:07.19} UT,   302.7 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.076
N_STARS:         37
X_OFFSET:        501 [pixels]
Y_OFFSET:        414 [pixels]
X_MAX:           1460 [pixels]
Y_MAX:           1373 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00506074000msufc0302.fits
SUN_POSTN:       206.92d {+13h 47m 41s}  -11.10d {-11d 06' 15"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.87d {+10h 07m 28s}   +6.18d {+06d 10' 54"}
MOON_DIST:        56.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:30:48 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 09"} (J2000)
ROLL:            91.237d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62287.19 SOD {17:18:07.19} UT,   302.7 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     340996694
X_OFFSET:        821 [pixels]
Y_OFFSET:        734 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       981
Y_GRB_POS:       894
BINNING_INDEX:   1
IM_URL:          sw00506074000msuni0310.fits
SUN_POSTN:       206.92d {+13h 47m 41s}  -11.10d {-11d 06' 15"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.87d {+10h 07m 29s}   +6.18d {+06d 10' 49"}
MOON_DIST:        56.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:30:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 09"} (J2000)
POINT_ROLL:      91.237d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62287.19 SOD {17:18:07.19} UT,   302.7 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.076
N_STARS:         37
X_OFFSET:        501 [pixels]
Y_OFFSET:        414 [pixels]
X_MAX:           1460 [pixels]
Y_MAX:           1373 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00506074000msufc0302.fits
SUN_POSTN:       206.92d {+13h 47m 41s}  -11.10d {-11d 06' 15"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.87d {+10h 07m 29s}   +6.18d {+06d 10' 47"}
MOON_DIST:        56.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:31:04 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     506074,   Seg_Num: 0
GRB_RA:          108.9646d {+07h 15m 51.50s} (J2000),
                 109.1890d {+07h 16m 45.37s} (current),
                 108.0124d {+07h 12m 02.98s} (1950)
GRB_DEC:         +49.6835d {+49d 41' 00.6"} (J2000),
                 +49.6620d {+49d 39' 43.2"} (current),
                 +49.7718d {+49d 46' 18.4"} (1950)
GRB_ERROR:       2.5 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62271.00 SOD {17:17:51.00} UT,   286.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       206.92d {+13h 47m 41s}  -11.10d {-11d 06' 15"}
SUN_DIST:        103.43 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.87d {+10h 07m 29s}   +6.18d {+06d 10' 45"}
MOON_DIST:        56.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.76, 24.14 [deg] galactic lon,lat of the burst
ECL_COORDS:      103.67, 27.14 [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 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:31:00 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 09"} (J2000)
ROLL:            91.237d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62287.19 SOD {17:18:07.19} UT,   302.7 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     340996694
X_OFFSET:        821 [pixels]
Y_OFFSET:        734 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       981
Y_GRB_POS:       894
BINNING_INDEX:   1
IM_URL:          sw00506074000msuni0310.fits
SUN_POSTN:       206.92d {+13h 47m 41s}  -11.10d {-11d 06' 15"}
SUN_DIST:        103.44 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.87d {+10h 07m 29s}   +6.18d {+06d 10' 46"}
MOON_DIST:        56.28 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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 #12472
S. T. Holland (CRESST/USRA/GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), M. M. Chester (PSU), V. D'Elia (ASDC), N. Gehrels (NASA/GSFC), C. Guidorzi (U Ferrara), J. A. Kennea (PSU), C. B. Markwardt (NASA/GSFC), A. Melandri (INAF-OAB), K. L. Page (U Leicester) and G. Stratta (ASDC) report on behalf of the Swift Team:
At 17:13:04 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111022B (trigger=506074). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 108.951, +49.666 which is
```
   RA(J2000)  =  07h 15m 48s
   Dec(J2000) = +49d 39' 59"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows nothing which is typical for an image trigger.
The XRT began observing the field at 17:15:21.8 UT, 137.3 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source with an enhanced position: RA, Dec 108.9646, 49.6835 which is equivalent to:
```
   RA(J2000)  = 07h 15m 51.49s
   Dec(J2000) = +49d 41' 00.4"
```
with an uncertainty of 2.5 arcseconds (radius, 90% containment). This location is 69 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.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 7.32 x 10^20 cm^-2 (Kalberla et al. 2005).
The initial flux in the 2.5 s image was 8.17e-10 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 144 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 0.07.
Burst Advocate for this burst is S. T. Holland (Stephen.T.Holland 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:     Sat 22 Oct 11 17:35:04 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 10"} (J2000)
POINT_ROLL:      91.236d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62845.28 SOD {17:27:25.28} UT,   860.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.229
N_STARS:         188
X_OFFSET:        261 [pixels]
Y_OFFSET:        174 [pixels]
X_MAX:           1700 [pixels]
Y_MAX:           1613 [pixels]
DET_THRESH:      21
PHOTO_THRESH:    13
SL_URL:          sw00506074000msufc0860.fits
SUN_POSTN:       206.92d {+13h 47m 42s}  -11.11d {-11d 06' 19"}
SUN_DIST:        103.45 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.91d {+10h 07m 38s}   +6.16d {+06d 09' 53"}
MOON_DIST:        56.32 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 22 Oct 11 17:35:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 10"} (J2000)
POINT_ROLL:      91.236d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62845.28 SOD {17:27:25.28} UT,   860.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.229
N_STARS:         188
X_OFFSET:        261 [pixels]
Y_OFFSET:        174 [pixels]
X_MAX:           1700 [pixels]
Y_MAX:           1613 [pixels]
DET_THRESH:      21
PHOTO_THRESH:    13
SL_URL:          sw00506074000msufc0860.fits
SUN_POSTN:       206.92d {+13h 47m 42s}  -11.11d {-11d 06' 19"}
SUN_DIST:        103.45 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.91d {+10h 07m 39s}   +6.16d {+06d 09' 48"}
MOON_DIST:        56.32 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:36:45 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 10"} (J2000)
ROLL:            91.236d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62845.28 SOD {17:27:25.28} UT,   860.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     340997252
X_OFFSET:        820 [pixels]
Y_OFFSET:        733 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       980
Y_GRB_POS:       893
BINNING_INDEX:   1
IM_URL:          sw00506074000msuni0868.fits
SUN_POSTN:       206.92d {+13h 47m 42s}  -11.11d {-11d 06' 20"}
SUN_DIST:        103.45 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.92d {+10h 07m 42s}   +6.16d {+06d 09' 31"}
MOON_DIST:        56.33 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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:     Sat 22 Oct 11 17:37:09 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     506074,   Seg_Num: 0
POINT_RA:        108.945d {+07h 15m 47s} (J2000)
POINT_DEC:       +49.669d {+49d 40' 10"} (J2000)
ROLL:            91.236d
IMG_START_DATE:  15856 TJD;   295 DOY;   11/10/22
IMG_START_TIME:  62845.28 SOD {17:27:25.28} UT,   860.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     340997252
X_OFFSET:        820 [pixels]
Y_OFFSET:        733 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       980
Y_GRB_POS:       893
BINNING_INDEX:   1
IM_URL:          sw00506074000msuni0868.fits
SUN_POSTN:       206.92d {+13h 47m 42s}  -11.11d {-11d 06' 21"}
SUN_DIST:        103.45 [deg]   Sun_angle= 6.5 [hr] (West of Sun)
MOON_POSTN:      151.93d {+10h 07m 43s}   +6.16d {+06d 09' 25"}
MOON_DIST:        56.33 [deg]
MOON_ILLUM:      23 [%]
GAL_COORDS:      167.77, 24.12 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      103.66, 27.12 [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 #12475
E. Gorbovskoy, V. Lipunov, V.Kornilov, A.Belinski, D.Kuvshinov, N.Tyurina, N.Shatskiy, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, D.Zimnukhov, M. Kornilov, A.Sankovich Sternberg Astronomical Institute, Moscow State University
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V. Senik Kislovodsk Solar Station of the Pulkovo Observatory
K.Ivanov, S.Yazev, N.M.Budnev, E.Konstantinov, V.Lenok, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov Ural State University, Kourovka
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB111022B 22 sec after notice time and 583 sec after GRB time at 2011-10-22 17:22:48 UT in two polarization bands. On our first (120s exposure) set we haven`t found optical transient within SWIFT error-box. The 5-sigma upper limit has been about 17.0 mag
MASTER II robotic telescope located in Tunka(Siberia) was pointed to GRB111022B 183 sec after notice time and 748 sec after GRB time at 2011-10-22 17:25:32 UT in two polarization bands. On our first (150s exposure) set we haven`t found optical transient within SWIFT error-box. So long time of pointing in this site is caused by a mount problem. The 5-sigma upper limit has been about 18.3 mag
The message may be cited.
GCN Circular #12478
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 885 s of XRT Photon Counting mode data and 1 UVOT images for GRB 111022B, 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 = 108.96498, +49.68362 which is equivalent to:
```
RA (J2000): 07h 15m 51.59s
Dec (J2000): +49d 41' 01.0"
```
with an uncertainty of 1.8 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 #12479
Paul Vreeswijk, Annalisa De Cia (U. Iceland), Dong Xu (WIS), Daniele Malesani (DARK), P=E1ll Jakobsson (U. Iceland) report on behalf of a larger collaboration:
Using ALFOSC on the Nordic Optical Telescope (NOT) we have obtained R (3 x 300 s) and I-band (5 x 400 s) imaging of the field of the Swift GRB 111022B (Holland et al., GCN 12472), starting on 2011 October 23.097 UT (roughly 9.3 hours after the burst). The seeing during the observations was around 1".
We do not detect any object within the enhanced XRT error circle (Beardmore et al., GCN 12478), down to limiting magnitudes of about R>23.2 and I>21.9 (calibrated against the USNO-B1 catalog).
We are grateful to the NOT observer, Terese Hansen (U. Copenhagen), for obtaining these observations.
GCN Circular #12480
Y. Aoki, R. Usui, K. Tokoyoda, Y. Yatsu, K. Kawakami, M. Hayashi, S. Song, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration:
We observed GRB 111022B (S.T. Holland et al, GCN12472) with the optical three color (g, Rc, and Ic) CCD camera attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The follow-up observation was started at 18:09:58, ~ 57 min after the BAT trigger because of bad weather.
We did not find any new point source within the enhanced XRT error circle (A.P. Beardmore et al, GCN12478) in three bands.
Photometric results and are listed below. We used GSC2.3 catalog for flux calibration.
```
T0+[s]      MID-UT     T-EXP[sec]      g'             Rc           Ic
---------------------------------------------------------------------------------
  +7317      19:54:13        540           >17.8       >17.7       ---
  +10426    20:12:52        360            ---             ---        >16.5
---------------------------------------------------------------------------------
T0+ : Elapsed time after the burst [sec]
T-EXP: Total Exposure time [sec]
```
GCN Circular #12481
A.J. Levan (U. Warwick), D. Fox (PSU), N.R. Tanvir (U. Leicester) report for a larger collaboration:
"We observed the localization of GRB 111022B (Holland et al. GCN 12472) with the Gemini-North telescope, equipped with NIRI. Observations were obtained in poor conditions (2.5" seeing) and began 17 hours after the burst in the YJHK filters.
We find a single source within the refined XRT error circle (Beardmore et al. GCN 12478). The source is well detected in both H and K, with K~19.0 +/- 0.2, but only very weakly in J. Given the earlier non-detections in the optical (Vreeswijk et al. GCN 12479) the inferred optical-IR colour is red (R-K > 4.2), coupled with the lack of apparent excess N_H this could be indicative of a high redshift burst.
Analysis is ongoing, and further observations are planned."
GCN Circular #12484
V. D'Elia, G. Stratta (ASDC), S. T. Holland (CRESST/USRA/GSFC) report on behalf of the Swift-XRT team:
We have analysed 8.5 ks of XRT data for GRB 111022B (Holland et al. GCN Circ. 12472), from 127 s to 18.5 ks after the BAT trigger. The data comprise 134 s in Windowed Timing (WT) mode (the first 8 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 Beardmore et al. (GCN. Circ 12478).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=1.7 (+/-0.9). At T+176 s the decay steepens to an alpha of 3.64 (+0.26, -0.22) before breaking again at T+404 s to a final decay with index alpha=2.05 (+0.26, -0.21).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.41 (+0.14, -0.13). The best-fitting absorption column is 1.46 (+0.27, -0.26) x 10^21 cm^-2, in excess of the Galactic value of 7.3 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.59 (+0.15, -0.12) 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 4.5 x 10^-11 (5.0 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     0 (+2.7, -0) x 10^20 cm^-2
Galactic foreground: 7.3 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.59 (+0.15, -0.12)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00506074.
This circular is an official product of the Swift-XRT team.
GCN Circular #12485
C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), S. T. Holland (CRESST/USRA/GSFC), H. A. Krimm (GSFC/USRA), 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+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 111022B (trigger #506074) (Holland, et al., GCN Circ. 12472). The BAT ground-calculated position is RA, Dec = 108.927, 49.663 deg which is
```
   RA(J2000)  =  07h 15m 42.4s
   Dec(J2000) = +49d 39' 45.9"
```
with an uncertainty of 2.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 82%.
The mask-weighted light curve shows a multi-peak structure starting at ~T-50 sec and ending at ~T+60 sec. T90 (15-350 keV) is 79.1 +/- 13.5 sec (estimated error including systematics).
The time-averaged spectrum from T-47.84 to T+53.80 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.59 +/- 0.20. The fluence in the 15-150 keV band is 9.0 +/- 1.2 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+49.54 sec in the 15-150 keV band is 0.4 +/- 0.3 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/506074/BA/
GCN Circular #12488
N. P. M. Kuin (MSSL-UCL) and S. T. Holland (CRESST/USRA/GSFC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 111022B 145 s after the BAT trigger (Holland et al., GCN Circ. 12472). The upper limit of detection was determined at the enhanced XRT position (Beardmore et al., GCN 12478).
Preliminary 3-sigma upper limits in the UVOT photometric system ( Poole et al. 2008, MNRAS, 383, 627) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           145          294          147         >20.8
u_FC               303          552          246         >20.0
v                  635         6091          452         >19.8
b                  559         6912          452         >20.3
u                  302         6707          678         >20.4
uvw1               685         6501          432         >20.3
uvm2               659         6296          452         >20.3
uvw2               608         5886          255         >20.1
white              145         6975          606         >21.3
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.07 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #12491
A. S. Moskvitin, V. N. Komarova, V. V. Sokolov and T. N. Sokolova (SAO RAS GRB follow-up team) report:
The field of GRB 111022B (Holland et al., GCN#12472) was observed with the 6-m BTA/Scorpio on October, 23, 2011. We obtained 3 x 180 sec. frames in the Rc band and 25 x 120 sec. in the Ic band. Observations in Rc began at 00:40:10 (7.5 hours after the trigger), ended at 00:50:21 UT; in Ic began at 01:23:11 UT (8.2 hours after the trigger), ended at 02:22:40 UT. Conditions were clear with a seeing of about 1".2 (FWHM of stellar objects in the Ic co-added image).
The possible optical counterpart is clearly detected in the Ic band within the 1".5 XRT error circle (according to http://www.swift.ac.uk/xrt_positions/) at the coordinates:
```
R.A.  (J2000) = 07:15:51.56    
Decl. (J2000) = +49:41:01.7
```
with the uncertainty 0".2.
The object magnitude is I = 23.6 +/- 0.3 as compared to USNO-B1.0 Imag of six nearby stars. The high error is due to calibration, the 3-sigma limit of the Ic co-added image is about 24.7. We do not detect the object in the Rc-band down to the 3-sigma level limiting magnitude of about 24.3. The Ic image can be found at ftp://ftp.sao.ru/pub/grb/GRB111022B/GRB111022B_BTA.jpg
Our results are in agreement with the previously reported NOT observations (Vreeswijk et al., GCN#12479) and do not contradict the idea of a high redshift burst according to Gemini infrared observations (Levan et al., GCN#12481).
We are grateful to T. A. Fatkhullin and the BTA staff for the help in observations.
GCN Circular #12493
M. Blazek (AsU AV), R. Hudec (AsU AV), M. Jelinek (IAA-CSIC), C. Polasek (AsU AV) and J. Strobl (AsU AV)
"We observed the field of GRB 111022B (Holland et al., GCN 12472) with 0.5m robotic telescope D50 in Ondrejov observatory (Czech Republic). The observation started at 23:55:06 UT on October 22, 2011, approx. 6.5 hours after the Swift trigger.
We report no detection of the optical counterpart on the unfiltered images within the error circle given by SWIFT-XRT (Beardmore et al., GCN 12478). The limiting magnitude of about R>20.0 mag in R-band was estimated using nearby sources from GSC2.2 catalogue."
GCN Circular #12494
J. Gorosabel (IAA-CSIC), A. Cabrera Lavers (GTC), R. Sanchez-Ramirez (IAA-CSIC), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), A.J. Levan (U. Warwick), C.C. Thoene (IAA-CSIC), N.R. Tanvir (U. Leicester), A.J. Castro-Tirado (IAA-CSIC), P. Kubanek (IAA-CSIC, U. Valencia), report on behalf of a larger collaboration:
We acquired z'-band images of the GRB 111022B field (Holland et al., GCNC 12472; Beardmore et al., GCNC 12478) with the 10.4m GTC(+OSIRIS) telescope. The observations were carried out on Oct 24.1105--24.1453 UT (33.4--34.3 hours post GRB) with a total exposure time of 31x60s=1860s and a seeing of 1.0-1.5". A faint object is detected coincident with the near-IR and optical candidate (Levan et al. GCNC 12481; Moskvitin et al. GCNC 12491). This source has a very preliminary AB magnitude of z'~25.5. In the XRT error circle (Beardmore et al., GCNC 12478) we note the presence of an additional object with a similar magnitude located 1.5" eastwards from the afterglow candidate.
GCN Circular #12495
A. Zauderer and E. Berger (Harvard) report:
"We observed the position of GRB 111022B (GCN 12472) with the EVLA at 5.8 and 22 GHz beginning on 2011 Oct 23.64 UT (0.92 days after the burst). No radio source is detected at 5.8 GHz to a 3-sigma upper limit of 30 uJy. At 22 GHz, a potential radio counterpart was detected with a flux of 45+/-14 uJy, consistent with the most up-to-date 1.5'' Swift-XRT position (GCN 12478, http://www.swift.ac.uk/xrt_positions). The potential radio source centroid is (J2000):
```
RA  =  07:15:51.53 +/- 0.05
Dec = 09:41:01.18 +/- 0.37
```
Follow-up observations at 22 GHz are planned."
GCN Circular #12496
A. Zauderer and E. Berger (Harvard) report:
The declination given in GCN 12495 was incorrect.
"We observed the position of GRB 111022B (GCN 12472) with the EVLA at 5.8 and 22 GHz beginning on 2011 Oct 23.64 UT (0.92 days after the burst). No radio source is detected at 5.8 GHz to a 3-sigma upper limit of 30 uJy. At 22 GHz, a potential radio counterpart was detected with a flux of 45+/-14 uJy, consistent with the most up-to-date 1.5'' Swift-XRT position (GCN 12478, http://www.swift.ac.uk/xrt_positions). The potential radio source centroid is (J2000):
```
RA  =   07:15:51.53 +/- 0.05
Dec =  +49:41:01.18 +/- 0.37
```
Follow-up observations at 22 GHz are planned."
GCN Circular #12521
A.V. Parhomenko, A. Tlatov, D. Dormidontov Kislovodsk Solar Station of the Pulkovo Observatory
K.Ivanov, V.A.Poleshchuk, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev,E.Konstantinov, Irkutsk State University
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, V.V.Chazov, P.V.Kortunov, A.Kuznetsov, D.Zimnukhov, M. Kornilov,A.Sankovich Sternberg Astronomical Institute, Moscow State University
V.Krushinski, I.Zalozhnich, T.Kopytova, A. Popov Ural State University, Kourovka
V.Yurkov, Yu.Sergienko, D.Varda, I.Kudelina Blagoveschensk Educational State University, Blagoveschensk
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka(Siberia) was pointed to the GRB110801A 101 sec after GRB time at 2011-08-01 19:51:23 UT. Unfortunatelly the objects was not in focus because recently photometer modification. On our first (20s exposure) set we haven`t found optical transient within SWIFT error-box (De Pasquale et al., GCN 12228). The 3-sigma upper limit has been about 14.0 mag (white+polarizator).
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located near Kislovodsk (Caucasus Mountains) closed roof 20 min before trigger due to cloudy condidtions. The telescope was repointed to the GRB110901A only 47 min 40 sec after trigger time at 2011-08-01 20:37:22 UT. We found OT at UVOT postion (De Pasquale et al., GCN 12228). The results of our photometry are:
```
Time_Start    T_mean-T_trig  exp time       m        error      Band UT 
s          s 20:37:22          2950        180         16.13       0.06 
R
20:44:29          3377        180         16.12       0.06        R 20:48:01 
3589        180         16.29       0.08        R
20:48:01          3589        180         16.03       0.06     White 20:51:24 
3792        180         16.43       0.06        R
20:51:24          3792        180         16.19       0.06     White
23:20:14         12722        180         17.75       0.10        R
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.08 in the direction of the burst (Schlegel et al. 1998).
The power low index (F~t^-aplha) apha ~1.0+-0.1 during this observations in R-band.
The message may be cited.
GCN Report 348.1
GCN_Report 348.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_348_1.pdf by S.T. Holland at CRESST/USRA/GSFC titled: "Final Swift Observations of GRB 111022B"
GCN Circular #12619
V. Rumyantsev (CrAO), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of GRB 111022B (Holland et al. GCN 12472) with Shajn telescope of CrAO observatory starting on Oct. 22 (UT) 20:44:36 under a mean seeing (FWHM) of 3.2 arsces. We took several frames with exposure of 60 s in R-band. Within enhanced Swift-XRT position (Beardmore et al. GCN 12478) we do not detected any optical source. A photometry is based on the USNO B1.0 star 1396-0186811 (07 15 51.05 +49 40 13.0) assuming R=17.07.
```
T_start UT  T0+        Filter, Exposure, OT,  uplim (3 sigma)
                  (mid, d)            (s)
20:44:36    0.1711     R       64x60       n/d   22.8 
```

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Jochen Greiner, last update: 04-Dec-2011 [Disclaimer]