Gamma-ray Burst 130122A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:45:11 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     546731,   Seg_Num: 0
GRB_RA:          194.218d {+12h 56m 52s} (J2000),
                 194.356d {+12h 57m 25s} (current),
                 193.690d {+12h 54m 46s} (1950)
GRB_DEC:         +59.015d {+59d 00' 55"} (J2000),
                 +58.945d {+58d 56' 41"} (current),
                 +59.285d {+59d 17' 08"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       49292 [cnts]    Image_Peak=708 [image_cnts]
TRIGGER_DUR:     12.160 [sec] 
TRIGGER_INDEX:   478     E_range: 25-100 keV
BKG_INTEN:       245704 [cnts]
BKG_TIME:        85349.86 SOD {23:42:29.86} UT
BKG_DUR:         64 [sec]
GRB_DATE:        16314 TJD;    22 DOY;   13/01/22
GRB_TIME:        85449.45 SOD {23:44:09.45} UT
GRB_PHI:         -140.82 [deg]
GRB_THETA:        21.46 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.66 [sigma]
IMAGE_SIGNIF:    7.76 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +2  -2  +0  +0 +46  +0 
SUN_POSTN:       305.42d {+20h 21m 41s}  -19.46d {-19d 27' 23"}
SUN_DIST:        117.40 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.56d {+05h 02m 13s}  +20.86d {+20d 51' 46"}
MOON_DIST:        85.82 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.61, 58.10 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      155.73, 56.81 [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 = 135.19,19.73 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:46:15 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.207d {+12h 56m 50s} (J2000)
POINT_DEC:       +59.013d {+59d 00' 45"} (J2000)
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85566.38 SOD {23:46:06.38} UT,   116.9 [sec] since BAT Trigger Time
COUNTS:          14    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        2    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:48:10 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     546731,   Seg_Num: 0
GRB_RA:          194.218d {+12h 56m 52s} (J2000),
                 194.356d {+12h 57m 25s} (current),
                 193.690d {+12h 54m 46s} (1950)
GRB_DEC:         +59.015d {+59d 00' 55"} (J2000),
                 +58.945d {+58d 56' 41"} (current),
                 +59.285d {+59d 17' 08"} (1950)
GRB_DATE:        16314 TJD;    22 DOY;   13/01/22
GRB_TIME:        85449.45 SOD {23:44:09.45} UT
TRIGGER_INDEX:   478
GRB_PHI:         -140.82 [deg]
GRB_THETA:        21.46 [deg]
DELTA_TIME:      -37.00 [sec]
TRIGGER_DUR:     12.160 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.66 [sigma]
IMAGE_SIGNIF:    7.76 [sigma]
LC_URL:          sw00546731000msb.lc
SUN_POSTN:       305.43d {+20h 21m 42s}  -19.46d {-19d 27' 21"}
SUN_DIST:        117.40 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.58d {+05h 02m 20s}  +20.86d {+20d 51' 48"}
MOON_DIST:        85.81 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.61, 58.10 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      155.73, 56.81 [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 = 135.19,19.73 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:49:20 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.208d {+12h 56m 50s} (J2000)
POINT_DEC:       +59.013d {+59d 00' 45"} (J2000)
POINT_ROLL:      82.166d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85570.60 SOD {23:46:10.60} UT,   121.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.278
N_STARS:         21
X_OFFSET:        520 [pixels]
Y_OFFSET:        499 [pixels]
X_MAX:           1479 [pixels]
Y_MAX:           1458 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00546731000msufc0121.fits
SUN_POSTN:       305.43d {+20h 21m 42s}  -19.46d {-19d 27' 20"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.59d {+05h 02m 22s}  +20.86d {+20d 51' 48"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:49:36 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.208d {+12h 56m 50s} (J2000)
POINT_DEC:       +59.013d {+59d 00' 45"} (J2000)
POINT_ROLL:      82.166d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85570.60 SOD {23:46:10.60} UT,   121.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.278
N_STARS:         21
X_OFFSET:        520 [pixels]
Y_OFFSET:        499 [pixels]
X_MAX:           1479 [pixels]
Y_MAX:           1458 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00546731000msufc0121.fits
SUN_POSTN:       305.43d {+20h 21m 42s}  -19.46d {-19d 27' 20"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.60d {+05h 02m 23s}  +20.86d {+20d 51' 48"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [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:     Tue 22 Jan 13 23:50:52 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.208d {+12h 56m 50s} (J2000)
POINT_DEC:       +59.013d {+59d 00' 45"} (J2000)
ROLL:            82.166d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85570.60 SOD {23:46:10.60} UT,   121.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     380591180
X_OFFSET:        839 [pixels]
Y_OFFSET:        818 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       999
Y_GRB_POS:       978
BINNING_INDEX:   1
IM_URL:          sw00546731000msuni0132.fits
SUN_POSTN:       305.43d {+20h 21m 42s}  -19.46d {-19d 27' 19"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.61d {+05h 02m 25s}  +20.86d {+20d 51' 49"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [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:     Tue 22 Jan 13 23:51:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.208d {+12h 56m 50s} (J2000)
POINT_DEC:       +59.013d {+59d 00' 45"} (J2000)
ROLL:            82.166d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85570.60 SOD {23:46:10.60} UT,   121.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     380591180
X_OFFSET:        839 [pixels]
Y_OFFSET:        818 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       999
Y_GRB_POS:       978
BINNING_INDEX:   1
IM_URL:          sw00546731000msuni0132.fits
SUN_POSTN:       305.43d {+20h 21m 43s}  -19.46d {-19d 27' 19"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.61d {+05h 02m 26s}  +20.86d {+20d 51' 49"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [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:     Tue 22 Jan 13 23:51:27 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     546731,   Seg_Num: 0
GRB_RA:          194.2832d {+12h 57m 07.96s} (J2000),
                 194.4206d {+12h 57m 40.93s} (current),
                 193.7556d {+12h 55m 01.34s} (1950)
GRB_DEC:         +59.0134d {+59d 00' 48.2"} (J2000),
                 +58.9430d {+58d 56' 34.6"} (current),
                 +59.2835d {+59d 17' 00.6"} (1950)
GRB_ERROR:       3.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85623.00 SOD {23:47:03.00} UT,   173.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       305.43d {+20h 21m 43s}  -19.46d {-19d 27' 19"}
SUN_DIST:        117.37 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.61d {+05h 02m 27s}  +20.86d {+20d 51' 49"}
MOON_DIST:        85.83 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.54, 58.10 [deg] galactic lon,lat of the burst
ECL_COORDS:      155.78, 56.83 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
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:        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:     Tue 22 Jan 13 23:53:48 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     546731,   Seg_Num: 0
GRB_RA:          194.2847d {+12h 57m 08.32s} (J2000),
                 194.4221d {+12h 57m 41.29s} (current),
                 193.7571d {+12h 55m 01.70s} (1950)
GRB_DEC:         +59.0149d {+59d 00' 53.6"} (J2000),
                 +58.9445d {+58d 56' 40.0"} (current),
                 +59.2850d {+59d 17' 06.0"} (1950)
GRB_ERROR:       1.1 [arcsec radius, statistical only]
GRB_MAG:         18.95 +/- 0.40 [mag]
FILTER:          10, White
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85569.00 SOD {23:46:09.00} UT,   119.6 [sec] since BAT Trigger Time
SUN_POSTN:       305.43d {+20h 21m 43s}  -19.46d {-19d 27' 18"}
SUN_DIST:        117.37 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.63d {+05h 02m 32s}  +20.86d {+20d 51' 51"}
MOON_DIST:        85.82 [deg]
MOON_ILLUM:      84 [%]
GAL_COORDS:      121.54, 58.10 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      155.78, 56.83 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        Result based on srclist data.  
COMMENTS:        Notice generated automatically.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:57:12 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.202d {+12h 56m 48s} (J2000)
POINT_DEC:       +59.010d {+59d 00' 37"} (J2000)
POINT_ROLL:      82.163d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85728.61 SOD {23:48:48.61} UT,   279.2 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        2.257
N_STARS:         37
X_OFFSET:        280 [pixels]
Y_OFFSET:        259 [pixels]
X_MAX:           1719 [pixels]
Y_MAX:           1698 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00546731000msufc0279.fits
SUN_POSTN:       305.43d {+20h 21m 44s}  -19.45d {-19d 27' 16"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.66d {+05h 02m 39s}  +20.86d {+20d 51' 53"}
MOON_DIST:        85.77 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 22 Jan 13 23:57:31 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.202d {+12h 56m 48s} (J2000)
POINT_DEC:       +59.010d {+59d 00' 37"} (J2000)
POINT_ROLL:      82.163d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85728.61 SOD {23:48:48.61} UT,   279.2 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        2.257
N_STARS:         37
X_OFFSET:        280 [pixels]
Y_OFFSET:        259 [pixels]
X_MAX:           1719 [pixels]
Y_MAX:           1698 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00546731000msufc0279.fits
SUN_POSTN:       305.43d {+20h 21m 44s}  -19.45d {-19d 27' 15"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.66d {+05h 02m 40s}  +20.86d {+20d 51' 53"}
MOON_DIST:        85.77 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [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:     Tue 22 Jan 13 23:58:28 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.202d {+12h 56m 48s} (J2000)
POINT_DEC:       +59.010d {+59d 00' 37"} (J2000)
ROLL:            82.163d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85728.61 SOD {23:48:48.61} UT,   279.2 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     380591338
X_OFFSET:        839 [pixels]
Y_OFFSET:        818 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       999
Y_GRB_POS:       978
BINNING_INDEX:   1
IM_URL:          sw00546731000msuni0290.fits
SUN_POSTN:       305.43d {+20h 21m 44s}  -19.45d {-19d 27' 15"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.67d {+05h 02m 42s}  +20.86d {+20d 51' 53"}
MOON_DIST:        85.77 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [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:     Tue 22 Jan 13 23:58:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     546731,   Seg_Num: 0
POINT_RA:        194.202d {+12h 56m 48s} (J2000)
POINT_DEC:       +59.010d {+59d 00' 37"} (J2000)
ROLL:            82.163d
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85728.61 SOD {23:48:48.61} UT,   279.2 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     380591338
X_OFFSET:        839 [pixels]
Y_OFFSET:        818 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       999
Y_GRB_POS:       978
BINNING_INDEX:   1
IM_URL:          sw00546731000msuni0290.fits
SUN_POSTN:       305.43d {+20h 21m 44s}  -19.45d {-19d 27' 15"}
SUN_DIST:        117.41 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.68d {+05h 02m 42s}  +20.86d {+20d 51' 53"}
MOON_DIST:        85.77 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      121.62, 58.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      155.73, 56.80 [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:     Tue 22 Jan 13 23:58:48 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     546731,   Seg_Num: 0
GRB_RA:          194.2853d {+12h 57m 08.47s} (J2000),
                 194.4227d {+12h 57m 41.44s} (current),
                 193.7577d {+12h 55m 01.85s} (1950)
GRB_DEC:         +59.0148d {+59d 00' 53.2"} (J2000),
                 +58.9444d {+58d 56' 39.6"} (current),
                 +59.2849d {+59d 17' 05.6"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16314 TJD;    22 DOY;   13/01/22
IMG_START_TIME:  85623.00 SOD {23:47:03.00} UT,   173.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       305.43d {+20h 21m 44s}  -19.45d {-19d 27' 15"}
SUN_DIST:        117.37 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:       75.68d {+05h 02m 42s}  +20.86d {+20d 51' 53"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      85 [%]
GAL_COORDS:      121.54, 58.10 [deg] galactic lon,lat of the burst
ECL_COORDS:      155.78, 56.83 [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 Circular #14140
A. Y. Lien (NASA/GSFC/ORAU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), A. P. Beardmore (U Leicester), N. Gehrels (NASA/GSFC), K. L. Page (U Leicester), D. M. Palmer (LANL), T. Sakamoto (AGU), B. Sbarufatti (INAF-OAB/PSU), M. H. Siegel (PSU) and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift Team:
At 23:44:09 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130122A (trigger=546731). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 194.218, +59.015 which is
```
   RA(J2000)  =  12h 56m 52s
   Dec(J2000) = +59d 00' 55"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single peak with a duration of about 30 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~1 sec after the trigger.
The XRT began observing the field at 23:46:06.3 UT, 116.9 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source located at RA, Dec 194.28337, 59.01331 which is equivalent to:
```
   RA(J2000)  = 12h 57m 08.01s
   Dec(J2000) = +59d 00' 47.9"
```
with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 121 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 9.34 x 10^19 cm^-2 (Kalberla et al. 2005).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 121 seconds after the BAT trigger. There is a candidate afterglow in the list of sources generated on-board at
```
  RA(J2000)  =	12:57:08.34 = 194.28476
  DEC(J2000) = +59:00:53.9  =  59.01496
```
with a 90%-confidence error radius of about 1.10 arc sec. This position is 6.2 arc sec. from the center of the XRT error circle. The estimated magnitude is 18.95. No correction has been made for the expected extinction corresponding to E(B-V) of 0.01.
Burst Advocate for this burst is A. Y. Lien (yarleen AT gmail.com). 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 Circular #14141
E. Sonbas (Adiyaman Univ.), T. Guver (Sabanci Univ.), O. Uysal (Akdeniz Univ./TUG), E. Gogus (Sabanci Univ.), H. Kirbiyik (TUG) report on behalf of a larger collaboration
We observed the field of Swift GRB 130122A (Lien et al. GCN#14140) with the 1.0 meter T100 telescope (TUBITAK National Observatory, Antalya - Turkey), starting January, 23, 00:50 UT (~ 1 hour after the trigger). Observations were carried out in the R filter under moderate weather conditions. The afterglow is clearly detected in stacked (4x300s) R band images and consistent with UVOT coordinates reported by Lien et al. GCN#14140.
There is ~10 arcsec offset between afterglow candidate and SDSS J125709.02+590053.1 and USNO-B1 1490-0209231 (RA= 12:57:09.00, Dec = +59:00:53.35) objects. Using USNO-B1 star USNO-B1 1490-0209196 (RA= 12:56:56.61, Dec= +59:02:39.11) in the field magnitude of the OT were estimated 20.8 +/- 0.2.
We are grateful to the TUBITAK National Observatory staff for promptly scheduling the observations and their technical support.
GCN Circular #14142
E. Gorbovskoy, V. Lipunov, D.Denisenko, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, A.Kuznetsov, V.V.Chazov Lomonosov Moscow State University, Sternberg Astronomical Institute
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Kislovodsk was pointed to the GRB130122A 28 sec s after notice time and 91 sec after GRB time at 2013-01-22 23:45:40 UT in two polarizations. The weather conditions were not very good and continuosly deteriorated. On our first (20s exposure) double set we marginally find an optical transient at the Swift UVOT position (Lien et al., GCN 14140) with unfiltered magnitude 16.8+-0.3 (m = 0.8R + 0.2B from USNO-B).
This message may be cited.
GCN Circular #14143
A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team.
Using 488 s of XRT Photon Counting mode data and 1 UVOT images for GRB 130122A, 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 = 194.28517, +59.01455 which is equivalent to:
```
RA (J2000): 12h 57m 8.44s
Dec (J2000): +59d 00' 52.4"
```
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 #14144
L.P. Xin (NAOC), D. Xu (DARK/NBI), Z.Y. Wu, J.Y. Wei, Y.L. Qiu, T.M. Zhang, J. Wang, J.S. Deng, C. Wu, X.H. Han (NAOC) report on behalf of a larger collaboration:
We began to observe the field of GRB 130122A (Lien et.al. GCN 14140) using the Xinglong 2.16m telescope located in Heibei Province, China at 18:14:12 UT on 2013-01-23. We obtained 5x300s R-band images in a poor seeing, with a median time of 19.7 hr after the BAT trigger.
The afterglow is not detected in the stacked image, down to a 3sigma limit of R~20.2 mag, calibrated with nearby USNO B1 stars.
This message may be cited.
For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org/grb/
GCN Circular #14145
V. D'Elia (ASDC), D.N. Burrows (PSU), J.A. Kennea (PSU), M.C. Stroh (PSU), C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), A. Maselli (INAF-IASFPA), V. Mangano (INAF-IASFPA) and A.Y. Lien report on behalf of the Swift-XRT team:
We have analysed 9.6 ks of XRT data for GRB 130122A (Lien et al. GCN Circ. 14140), from 102 s to 29.4 ks after the BAT trigger. The data comprise 76 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 14143).
The light curve can be modelled with a power-law decay with a decay index of alpha=1.27 (+/-0.04).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.67 (+0.21, -0.20). The best-fitting absorption column is 6.3 (+5.3, -4.6) x 10^20 cm^-2, in excess of the Galactic value of 9.3 x 10^19 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.3 x 10^-11 (4.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     6.3 (+5.3, -4.6) x 10^20 cm^-2
Galactic foreground: 9.3 x 10^19 cm^-2
Excess significance: 1.9 sigma
Photon index:	     1.67 (+0.21, -0.20)
```
If the light curve continues to decay with a power-law decay index of 1.27, the count rate at T+24 hours will be 1.3 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.4 x 10^-14 (6.1 x 10^-14) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00546731.
This circular is an official product of the Swift-XRT team.
GCN Circular #14146
S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-61 to T+242 sec from recent telemetry downlinks, we report further analysis of BAT GRB 130122A (trigger #546731) (Lien, et al., GCN Circ. 14140). The BAT ground-calculated position is RA, Dec = 194.307, 59.003 deg, which is
```
   RA(J2000)  =  12h 57m 13.8s 
   Dec(J2000) = +59d 00' 09.2" 
```
with an uncertainty of 3.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 89%.
The mask-weighted light curve shows a single roughly FRED-like peak starting at ~T+0 sec, peaking at ~T+10 sec, and ending at ~T+100 sec. T90 (15-350 keV) is 64 +- 36 sec (estimated error including systematics).
The time-averaged spectrum from T-12.6 to T+67.4 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.34 +- 0.24. The fluence in the 15-150 keV band is 7.4 +- 1.1 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+10.92 sec in the 15-150 keV band is 0.4 +- 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/546731/BA/
GCN Circular #14147
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB) J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UCSC), Eleonora Troja (GSFC), Enrico Ramirez‐Ruiz (UCSC), José A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report:
Through intermittent clouds and in poor seeing conditions, we observed the field of GRB 130122A (Lien, et al., GCN 14140) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir. Between 2013 Jan 23.30 to 2013 Jan 23.52 UTC (7.6 to 12.7 hours after the BAT trigger), we obtained approximately 45 minutes of useful data in the r', i', Z, Y, and J bands.
In comparison with SDSS DR8 and 2MASS, we derive the following detection and upper limits (3-sigma) in the AB magnitude system for a source spatially coincident with the UVOT position (GCN 14140):
```
 r' >20.7
 i' 21.1 +/- 0.2
 Z  >20.3
 Y  >20.2
 J  >18.2
```
These magnitudes are not corrected for Galactic extinction in the direction of the GRB. Continued observations are planned.
We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.
GCN Circular #14148
A. Volnova (SAI MSU/IKI), V. Linkov (ISON-Kislovodsk), I. Molotov (KIAM), V. Kouprianov (GAO), A. Pozanenko (IKI), report on behalf of larger collaboration:
We observed the field of GRB 130122A (Lien et al., GCN 14140) with SANTEL-400AN (0.4-m f/3) telescope of ISON-Kislovodsk observatory. Observations started on Jan. 22 (UT) 23:44 and we obtained several unfiltered images of 60 s and 100 s exposures. Initial part of our observations were carried under unfavorable weather conditions. Starting on Jan.23 (UT) 00:14:14 we clearly detect optical afterglow of GRB 130122A (Lien et al., GCN 14140; Sonbas et al., GCN 14141; Gorbovskoy et al., GCN 14142) in single images of 60 s exposure. A preliminary photometry of stacked images is based on USNO-B1.0 (R2) nearby stars:
```
T_start,     T0+,       Exp,     Filter,       OT
(UT)          mid (d)   (s)

00:14:14  0.00899  8x60    none      18.0 +/-0.1
00:47:45  0.04474   100     none      18.5 +/- 0.5
01:02:07  0.05579  4x60    none       >17.3 
```
GCN Circular #14149
A. A. Breeveld (MSSL-UCL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130122A 121 s after the BAT trigger (Lien et al., GCN Circ. 14140). A source consistent with the XRT position reported in (Beardmore et al., GCN Circ. 14143) is seen in the initial exposures.
The preliminary UVOT position is:
```
    RA  (J2000) =3D  12:57:08.30 =3D 194.28459 (deg.)
    Dec (J2000) =3D +59:00:53.5  =3D  59.01487 (deg.)
```
with an estimated uncertainty of 0.53 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT photometri= c system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the finding chart (FC) and earliest exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white_FC           121          271          148         18.75 =C2=B1 0.0=
9
white              559          579           19         18.57 =C2=B1 0.2=
3
v                  609          629           19        >17.9
b                  535          555           19         18.35 =C2=B1 0.3=
2
u                  279          529          246         18.49 =C2=B1 0.1=
4
uvw1              3974         5610          393        >20.9
uvm2              5205         5404          197        >20.0
uvw2              4795         4995          197        >20.4
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) =3D 0.01 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #14150
A. Zauderer and E. Berger (Harvard) report on behalf of the CARMA Key Project "A Millimeter View of the Transient Universe":
"We observed the position of GRB 130122A (Lien et al.; GCN 14140) beginning 2013 Jan 23.47 (dt=0.48 d) with the Combined Array for Research in Millimeter Astronomy. At a mean frequency of 85 GHz with 78 m integration, we do not detect significant millimeter emission at the Swift/UVOT position (Breeveld et al.; GCN 14149) to a 3-sigma limit of ~0.9 mJy.
We thank the CARMA observatory staff for their support."
GCN Circular #14152
A. Galeev (KFU/AST), I. Khamitov (TUG), I. Bikmaev, N. Sakhibullin (KFU/AST), R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), H. Kirbiyik (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.)
report:
The field of the optical afterglow of GRB 130122A (Lien et al., GCN 14140) was observed with Russian-Turkish 1.5-m telescope (RTT150, Bakirlitepe, TUBITAK National Observatory, Turkey) in partially cloudy conditions. Using the TFOSC instrument we obtained BVR images by 300s starting at January 23, 02:38:31 UT, i.e. 2.91 hours after the burst. The afterglow is clearly detected in all images.
On our images we find the optical transient at the coordinates with uncertainty of 0.1 arcsec:
```
  R.A. (J2000) =  12 57 08.317
  Dec. (J2000) = +59 00 53.62
```
Using the same USNO-B1 star reported by Sonbas et al. (GCN 14141) as a reference, we estimated the R-magnitudes of the afterglow:
```
T-T0,  Mag. +/- Mag.err
(hour)
2.95  19.88 +/- 0.13
3.06  20.07 +/- 0.10
3.17  19.94 +/- 0.20
3.28  20.00 +/- 0.09
3.33  19.79 +/- 0.13
```
The combined image of the field can be found at: http://hea.iki.rssi.ru/grb/130122a/indexeng.html
This message may be cited.
GCN Circular #14192
L. P. Singer (Caltech), S. B. Cenko (UC Berkeley), and D. A. Brown (Syracuse) report on behalf of a larger collaboration:
We have imaged the 3-sigma Swift UVOT error circle (P. Evans, GCN 14143) of GRB130122A (Swift546731, S. Barthelmy, GCN 14140) with the Palomar 48 inch Oschin telescope (P48) as part of the Palomar Transient Factory (PTF). Images were obtained in the Mould R filter at 2013-01-23 at 06:27:39 and 07:11:25 UTC, 6.7 and 7.5 hours after the trigger.
With sporadic cloud cover and a bright moon, we find no point source, fading or otherwise, to 5-sigma limiting magnitudes of 19.1 and 18.4.
GCN Report 438.1
GCN_Report 438.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_438_1.pdf by A.Y. Lien at NASA/GSFC/ORAU titled: "Swift Observations of GRB 130122A"

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Jochen Greiner, last update: 09-Feb-2013 [Disclaimer]