Gamma-ray Burst 060116

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:38:37 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     177533,   Seg_Num: 0
GRB_RA:           84.699d {+05h 38m 48s} (J2000),
                  84.773d {+05h 39m 06s} (current),
                  84.085d {+05h 36m 20s} (1950)
GRB_DEC:          -5.449d {-05d 26' 54"} (J2000),
                  -5.446d {-05d 26' 43"} (current),
                  -5.476d {-05d 28' 32"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       53968 [cnts]    Image_Peak=454 [image_cnts]
TRIGGER_DUR:     16.384 [sec] 
TRIGGER_INDEX:   379     E_range: 50-350 keV
BKG_INTEN:       199157 [cnts]
BKG_TIME:        30943.04 SOD {08:35:43.04} UT
BKG_DUR:         64 [sec]
GRB_DATE:        13751 TJD;    16 DOY;   06/01/16
GRB_TIME:        31047.23 SOD {08:37:27.23} UT
GRB_PHI:         127.98 [deg]
GRB_THETA:        37.93 [deg]
SOLN_STATUS:     0x83
RATE_SIGNIF:     10.44 [sigma]
IMAGE_SIGNIF:    6.58 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +3  +0  +0  +0 +74  +1 
SUN_POSTN:       298.07d {+19h 52m 17s}  -20.93d {-20d 55' 59"}
SUN_DIST:        138.01 [deg]
MOON_POSTN:      141.19d {+09h 24m 45s}  +19.16d {+19d 09' 42"}
MOON_DIST:        60.72 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.49,-18.63 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       83.98,-28.78 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 194.53,-15.83 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:40:08 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.654d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.473d {-05d 28' 20"} (J2000)
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31200.75 SOD {08:40:00.75} UT,   153.5 [sec] since BAT Trigger Time
COUNTS:          11    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:     Mon 16 Jan 06 08:41:38 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     177533,   Seg_Num: 0
GRB_RA:           84.699d {+05h 38m 48s} (J2000),
                  84.773d {+05h 39m 06s} (current),
                  84.085d {+05h 36m 20s} (1950)
GRB_DEC:          -5.449d {-05d 26' 54"} (J2000),
                  -5.446d {-05d 26' 43"} (current),
                  -5.476d {-05d 28' 32"} (1950)
GRB_DATE:        13751 TJD;    16 DOY;   06/01/16
GRB_TIME:        31047.23 SOD {08:37:27.23} UT
TRIGGER_INDEX:   379
GRB_PHI:         127.98 [deg]
GRB_THETA:        37.93 [deg]
DELTA_TIME:      -21.00 [sec]
TRIGGER_DUR:     16.384 [sec] 
LC_URL:          sw00177533000msb.lc
SUN_POSTN:       298.07d {+19h 52m 18s}  -20.93d {-20d 55' 57"}
SUN_DIST:        138.01 [deg]
MOON_POSTN:      141.21d {+09h 24m 51s}  +19.15d {+19d 09' 09"}
MOON_DIST:        60.74 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.49,-18.63 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       83.98,-28.78 [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:        Since the IMAGE_SIGNIF is less than 7 sigma, this is a questionable detection.  
COMMENTS:        This trigger occurred at longitude,latitude = 194.53,-15.83 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:43:43 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.654d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.472d {-05d 28' 20"} (J2000)
POINT_ROLL:      230.047d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31200.25 SOD {08:40:00.25} UT,   153.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        0.842
N_STARS:         13
X_OFFSET:        119 [pixels]
Y_OFFSET:        649 [pixels]
X_MAX:           1078 [pixels]
Y_MAX:           1608 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    4
SL_URL:          sw00177533000msufc0153.fits
SUN_POSTN:       298.07d {+19h 52m 18s}  -20.93d {-20d 55' 56"}
SUN_DIST:        137.96 [deg]
MOON_POSTN:      141.23d {+09h 24m 55s}  +19.15d {+19d 08' 47"}
MOON_DIST:        60.81 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.49,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.93,-28.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:44:46 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.654d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.472d {-05d 28' 20"} (J2000)
POINT_ROLL:      230.047d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31200.25 SOD {08:40:00.25} UT,   153.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        0.842
N_STARS:         13
X_OFFSET:        119 [pixels]
Y_OFFSET:        649 [pixels]
X_MAX:           1078 [pixels]
Y_MAX:           1608 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    4
SL_URL:          sw00177533000msufc0153.fits
SUN_POSTN:       298.08d {+19h 52m 18s}  -20.93d {-20d 55' 56"}
SUN_DIST:        137.96 [deg]
MOON_POSTN:      141.24d {+09h 24m 57s}  +19.14d {+19d 08' 35"}
MOON_DIST:        60.81 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.49,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.93,-28.80 [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:     Mon 16 Jan 06 08:45:01 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.654d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.472d {-05d 28' 20"} (J2000)
ROLL:            230.047d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31200.25 SOD {08:40:00.25} UT,   153.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     159093601
X_OFFSET:        439 [pixels]
Y_OFFSET:        969 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       599
Y_GRB_POS:       1129
BINNING_INDEX:   1
IM_URL:          sw00177533000msuni0153.fits
SUN_POSTN:       298.08d {+19h 52m 18s}  -20.93d {-20d 55' 56"}
SUN_DIST:        137.96 [deg]
MOON_POSTN:      141.24d {+09h 24m 57s}  +19.14d {+19d 08' 33"}
MOON_DIST:        60.81 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.49,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.93,-28.80 [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:     Mon 16 Jan 06 08:46:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.654d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.472d {-05d 28' 20"} (J2000)
ROLL:            230.047d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31200.25 SOD {08:40:00.25} UT,   153.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     159093601
X_OFFSET:        439 [pixels]
Y_OFFSET:        969 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       599
Y_GRB_POS:       1129
BINNING_INDEX:   1
IM_URL:          sw00177533000msuni0153.fits
SUN_POSTN:       298.08d {+19h 52m 18s}  -20.93d {-20d 55' 55"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.25d {+09h 25m 00s}  +19.14d {+19d 08' 15"}
MOON_DIST:        60.82 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.49,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.93,-28.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:49:08 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 14"} (J2000)
POINT_ROLL:      230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31407.12 SOD {08:43:27.12} UT,   359.9 [sec] since BAT Trigger Time
FILTER:          9, B
BKG_MEAN:        1.597
N_STARS:         8
X_OFFSET:        119 [pixels]
Y_OFFSET:        649 [pixels]
X_MAX:           1078 [pixels]
Y_MAX:           1608 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00177533000msufc0359.fits
SUN_POSTN:       298.08d {+19h 52m 19s}  -20.93d {-20d 55' 54"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.27d {+09h 25m 05s}  +19.13d {+19d 07' 48"}
MOON_DIST:        60.84 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:49:53 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 14"} (J2000)
POINT_ROLL:      230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31407.12 SOD {08:43:27.12} UT,   359.9 [sec] since BAT Trigger Time
FILTER:          9, B
BKG_MEAN:        1.597
N_STARS:         8
X_OFFSET:        119 [pixels]
Y_OFFSET:        649 [pixels]
X_MAX:           1078 [pixels]
Y_MAX:           1608 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00177533000msufc0359.fits
SUN_POSTN:       298.08d {+19h 52m 19s}  -20.93d {-20d 55' 53"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.28d {+09h 25m 07s}  +19.13d {+19d 07' 40"}
MOON_DIST:        60.85 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [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:     Mon 16 Jan 06 08:50:23 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 14"} (J2000)
ROLL:            230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31407.12 SOD {08:43:27.12} UT,   359.9 [sec] since BAT Trigger Time
FILTER:          9, B
EXPOSURE_ID:     159093808
X_OFFSET:        439 [pixels]
Y_OFFSET:        969 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       599
Y_GRB_POS:       1129
BINNING_INDEX:   1
IM_URL:          sw00177533000msuni0359.fits
SUN_POSTN:       298.08d {+19h 52m 19s}  -20.93d {-20d 55' 53"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.28d {+09h 25m 08s}  +19.13d {+19d 07' 34"}
MOON_DIST:        60.85 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [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:     Mon 16 Jan 06 08:51:36 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 14"} (J2000)
ROLL:            230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  31407.12 SOD {08:43:27.12} UT,   359.9 [sec] since BAT Trigger Time
FILTER:          9, B
EXPOSURE_ID:     159093808
X_OFFSET:        439 [pixels]
Y_OFFSET:        969 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       599
Y_GRB_POS:       1129
BINNING_INDEX:   1
IM_URL:          sw00177533000msuni0359.fits
SUN_POSTN:       298.08d {+19h 52m 19s}  -20.93d {-20d 55' 53"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.29d {+09h 25m 10s}  +19.12d {+19d 07' 21"}
MOON_DIST:        60.86 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:59:05 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 15"} (J2000)
POINT_ROLL:      230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  32084.22 SOD {08:54:44.22} UT,   1037.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        0.851
N_STARS:         11
X_OFFSET:        119 [pixels]
Y_OFFSET:        649 [pixels]
X_MAX:           1078 [pixels]
Y_MAX:           1608 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    4
SL_URL:          sw00177533000msufc1036.fits
SUN_POSTN:       298.09d {+19h 52m 21s}  -20.93d {-20d 55' 49"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.35d {+09h 25m 25s}  +19.10d {+19d 05' 59"}
MOON_DIST:        60.90 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 16 Jan 06 08:59:46 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 15"} (J2000)
POINT_ROLL:      230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  32084.22 SOD {08:54:44.22} UT,   1037.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        0.851
N_STARS:         11
X_OFFSET:        119 [pixels]
Y_OFFSET:        649 [pixels]
X_MAX:           1078 [pixels]
Y_MAX:           1608 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    4
SL_URL:          sw00177533000msufc1036.fits
SUN_POSTN:       298.09d {+19h 52m 21s}  -20.93d {-20d 55' 49"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.36d {+09h 25m 26s}  +19.10d {+19d 05' 52"}
MOON_DIST:        60.91 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [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:     Mon 16 Jan 06 09:00:12 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 15"} (J2000)
ROLL:            230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  32084.22 SOD {08:54:44.22} UT,   1037.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     159094485
X_OFFSET:        439 [pixels]
Y_OFFSET:        969 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       599
Y_GRB_POS:       1129
BINNING_INDEX:   1
IM_URL:          sw00177533000msuni1036.fits
SUN_POSTN:       298.09d {+19h 52m 21s}  -20.93d {-20d 55' 49"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.36d {+09h 25m 27s}  +19.10d {+19d 05' 47"}
MOON_DIST:        60.91 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [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:     Mon 16 Jan 06 09:01:18 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     177533,   Seg_Num: 0
POINT_RA:         84.653d {+05h 38m 37s} (J2000)
POINT_DEC:        -5.471d {-05d 28' 15"} (J2000)
ROLL:            230.049d
IMG_START_DATE:  13751 TJD;    16 DOY;   06/01/16
IMG_START_TIME:  32084.22 SOD {08:54:44.22} UT,   1037.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     159094485
X_OFFSET:        439 [pixels]
Y_OFFSET:        969 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       599
Y_GRB_POS:       1129
BINNING_INDEX:   1
IM_URL:          sw00177533000msuni1036.fits
SUN_POSTN:       298.09d {+19h 52m 21s}  -20.93d {-20d 55' 48"}
SUN_DIST:        137.95 [deg]
MOON_POSTN:      141.37d {+09h 25m 29s}  +19.09d {+19d 05' 35"}
MOON_DIST:        60.92 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      209.48,-18.68 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       83.92,-28.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #4519
S. Campana (INAF-OAB), S. Barthelmy (GSFC), N. Gehrels (GSFC), C. Gronwall (PSU), J. Kennea (PSU), C. Markwardt (GSFC/UMD), K. Page (U Leicester), D. Palmer (LANL), M. Perri (ASDC) on behalf of the Swift team:
At 08:37:27 UT, Swift-BAT triggered and located GRB 060116 (trigger=177533). The spacecraft slewed immediately. The BAT on-board calculated location is RA,Dec 84.699d,-5.449d {05h 38m 48s,-05d 26' 54"} (J2000), with an uncertainty of 3 arcmin (radius, 90% containment, stat+sys). The BAT light curve shows a multi-peak structure with a total duration of ~35 sec. The peak count rate was ~600 counts/sec (15-350 keV), at several times after the trigger.
XRT began observing the field at 08:40:00.75 UT, 154 sec after the BAT trigger. The on-board detection algorithm did not centroid on a source due to insufficient counts so no prompt X-ray position is available. The XRT prompt spectrum and lightcurve show no signficant X-ray emission in the field, suggesting that any X-ray counterpart to this burst is faint. Further analysis will require processing of the XRT full telemetry data following the next ground station contact at 09:32 UT.
UVOT took a finding chart exposure of 200 seconds with the V filter starting 153 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 25% of the BAT error circle. The typical 3-sigma upper limit has been about 18th mag. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for the expected visual extinction of about 0.9 magnitudes.
GCN Circular #4521
C. Guidorzi, A. Melandri, I. A. Steele, C.G. Mundell, A. Monfardini, A. Gomboc, C.J. Mottram, R.J. Smith, M.F. Bode (Liverpool JMU), P. O'Brien, E. Rol, N. Bannister (Leicester) report:
"The 2-m Faulkes Telescope North robotically followed up GRB060116 (SWIFT trigger 177533) 18.5 min after the GRB trigger time. The 4.6'x 4.6' field of view covered about 75% of the BAT error circle. The automatic "detection mode" procedure did not find any afterglow candidate brighter than R~19 mag (vs USNOB1) from a 3x10s exposure. The visual extinction of the field is A_V~0.8 according to the Schlegel et al. maps. Further automated observations were conducted immediately following the "detection mode" exposures in B, R and SDSS-I filters. Manual inspection of subsequent datasets reveals no afterglow candidate down to the DSS limit."
GCN Circular #4522
S. Campana (INAF-OAB), M. Perri (ASDC), P. Romano (INAF-OAB), D.N. Burrows (PSU) on behalf of the Swift XRT team:
We have analyzed the first orbit of XRT data from GRB 060116 (trigger 177533; Campana et al., GCN 4519). A 1364 s Photon Counting mode image provides a refined XRT position:
```
RA(J2000) = 05h 38m 46.20s,
Dec(J2000) = -05d 26m 12.8s    
  
```
with an uncertainty of 3.7 arcsec (90% containment). This position includes the latest XRT boresight correction. This position is 0.8 arcmin from the BAT position.
GCN Circular #4535
E.S. Rykoff (U Mich), S.A. Yost (U Mich), H. Swan (U Mich), report on behalf of the ROTSE collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 060116 (Swift trigger 177533, Campana, et al, GCN 4519), producing images beginning 9.0 s after the GCN notice time. An automated response took the first image at 08:38:46.0 UT, 78.8 s after the burst, under fair conditions. We took 10 5-sec, 10 20-sec and 70 60-sec eposures. These unfiltered images are calibrated relative to USNO A2.0 (R).
Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma BAT error circle, or in the XRT error circle (Campana, et al, GCN 4522) for both single images and coadding into sets of 10. Individual images have limiting magnitudes ranging from 15.6-16.9; we set the following specific limits.
```
start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd? 
--------------------------------------------------------------------
08:38:46.0   08:38:51.0         5     16.1           78.8       N
08:38:46.0   08:39:55.0        69     17.7           78.8       Y
08:40:07.6   08:44:50.7       283     18.0          160.4       Y
```
GCN Circular #4524
M. Yang, Y.T. Chen, H.C. Lin, K.Y. Huang, W.H. Ip (NCU), Y. Urata(RIKEN), Y. Qiu (BAO), Y.Q. Lou (THCA) on behalf of EAFON report:
" We observed the error region of GRB 060116 (Campana et al., GCN 4519) using 1-m telescope at Lulin Observatory, Taiwan. After the twliglights, the I and R band observations were started at 11.16 UT( about 2.9 hours after burst). No variable source was detected in the BAT and XRT error region(Campana et al. GCN 4522) at our co-add I and R images. The limiting magnitude of I and R band were calibrated against USNO-B1.0 catalog (I and R, respectively).
```
Mid-UT(hrs)   Exp-time   Filter   limiting mag. (3-sigma)
 ----------------------------------------------------------
   3.01       3x300s     I         ~20.1
   3.10       3x300s     R         ~21.0
   4.77       3x300s     I         ~20.0
```
GCN Circular #4527
T. S. Poole (UCL-MSSL), S. Campana (INAF-OAB), J. Nousek (PSU), N. White (GSFC), N. Gehrels (GSFC) on behalf of the Swift/UVOT team.
The Swift/UVOT began observing the field of GRB060116 (BAT Trigger=177533, S. Campana, et. al, GCN 4519) at 08:39:46, 154s after the BAT trigger. No new source is detected at the XRT position (S. Campana, GCN 4522) in coadded images with any of the filters. The following 3-sigma magnitude upper limits are not corrected for Galactic extinction; E(B-V) = 0.264.
```
Filter   T_range(s)  T_exp(s)  3sigma(mag)

V        154-610     219.6     19.2
B        361-706     219.6     20.2
W1       639-802     39.6      18.5
M2       614-778     38.6      18.5
W2       567-731     39.6      18.5
  
```
Where T_range is time post-trigger, and T_exp is the exposure time of the observation. A 6 arcsec radius was used for all filters.
This message may be cited.
GCN Circular #4529
S. Campana (INAF-OAB), M. Perri (ASDC), P. Romano (INAF-OAB), D.N. Burrows (PSU), J. Norris (GSFC), K. Hurley (Berkeley) report:
"We have analyzed the first four orbits of XRT data from GRB 060116 (Campana et al., GCN 4519). The GRB afterglow is detected at a mean count rate of 0.099+/-0.004 count/s during a 5545 s Photon Counting mode observation. Close to the GRB afterglow (1.2 arcmin) there is a fainter source (0.017+/-0.002 count/s) coincident with an M4 star. The best fit position for the GRB afterglow is:
```
RA(J2000) = 05h 38m 46.22s,
Dec(J2000) = -05d 26m 11.9s
```
with error radius 3.7 arcsec, less than 1 arcsec from the one reported in Campana et al. (GCN 4522) based on a shorter observation. This position is also 1.5 arcsec from the source reported by Kocevski et al. (GCN 4528).
The X-ray light curve is fading and its decay law is consistent with a power-law with slope of -0.95+/-0.07 (90% confidence level). No strong flare activity is observed.
The X-ray spectrum can be fit with an absorbed power law model with photon index of 2.1+/-0.3 and a column density of (8.1+/-2.5)E21 cm-2, higher than the Galactic hydrogen column density in the direction of the burst (NH_gal=2.0E21 cm-2 at b=-19). The mean 0.5-10 keV unabsorbed flux is 9E-12 erg cm-2 s-1. Fixing the Galactic column density to the above value we can constrain the GRB redshift to be z<3.2 or z>5.4 (90% c.l., and NH(z)>4E21 cm-2).
If the burst continues to decay at the current rate we estimate an XRT count rate of 2E-3 counts/s at T+24hr, which corresponds to an observed 0.5-10 keV flux of ~3E-13 ergs cm-2 s-1.
GCN Circular #4531
S. Barthelmy (GSFC), L. Angelini (GSFC-JHU), L. Barbier (GSFC), M. Chester (PSU), J. Cummings (GSFC/NRC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/NRC), G. Sato (ISAS), J. Tueller (GSFC) on behalf of the Swift-BAT team:
Using the data set from T-299 to T+303 sec from the recent telemetry downlink, we report further analysis of BAT GRB 060116 (trigger #177533) (Compana, et al., GCN 4519). The BAT ground-calculated position is RA,Dec = 84.699,-5.449 deg {5h 38m 47.8s, -5d 26' 56.0"} (J2000) +- 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 20%.
The lightcuve has one peak centered on T+20 sec. There is very weak emission starting as early as ~T-40 sec. The event is over by ~T+90 sec. T90 (15-350 keV) is (113 +- 10) sec (estimated error including systematics).
The power law index of the time-averaged spectrum is 1.44 +- 0.18. The fluence in the 15-150 keV band is (2.6 +- 0.3) x 10^-06 erg/cm2. The 1-sec peak photon flux measured from T+36.08 sec in the 15-150 keV band is (1.1 +- 0.3) ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Circular #4532
P. D'Avanzo (INAF/OABr), D. Malesani, L.A. Antonelli (INAF/OABr), report on behalf of the MISTICI collaboration:
We observed the field of GRB 060116 (Campana et al., GCN 4519; Barthelmy et al., GCN 4531) with the ESO-VLT UT2 equipped with FORS 1. Observations were carried out in the R and I filters, starting on Jan 17.069 UT (17 h after the burst).
The object reported by Kocevski, Bloom & McGrath (GCN 4528) is not detected in our images down to a limiting magnitude I > 24.5 and R > 24.9 (3 sigma, calibrated against the USNO-B1 catalog).
Our non detection indicates that the candidate object by Kocevski et al. (GCN 4528) is very likely the J-band afterglow of GRB 060116, which faded significantly between the two observations.
We further note a faint, red object inside the XRT error box (Campana et al., GCN 4522, 4529), at the coordinates (0.3" arcsec error):
```
   alpha(J2000) = 05:38:46.170;
   delta(J2000) = -05:26:15.08.
  
```
This is 2.5" away of the afterglow position (Kocevski et al., GCN 4528).
A finding chart in the I filter is posted at the following URL: http://www.merate.mi.astro.it/~davanzo/GRB/grb060116_find_I.jpeg
This message can be cited.
GCN Circular #4537
M. Nysewander, A. LaCluyze, D. Reichart, J.A. Crain, A. Foster, K. Ivarson, J. Haislip, C. MacLeod and J. Kirschbrown report on behalf of the UNC team of the FUN GRB collaboration:
We observed the error region of GRB 060116 (Campana et al., GCN 4519) with five of the PROMPT telescopes simultaneously in UBg'r'i'Iz' beginning 16.2 hours after the burst under the automated control of SkyNet. Each exposure is 80 s long; the table below gives details of the observations:
```
Filter Telescope  Start (UT) Stop (UT)    # Exp   Total (hr)
 U       P2       00:47:38   07:52:08      272     6.04
 B       P5       03:37:19   06:30:20      114     2.53
 g'      P3       02:59:30   04:39:18      66      1.47
 r'      P4       00:47:41   07:53:25      163     3.62
 I       P1       01:44:18   07:52:13      245     5.44
 i'      P4       03:38:24   06:27:06      115     2.56
 z'      P5       00:47:40   07:53:14      161     3.58
```
In a 100 x 80s stack, at a mean time of 19.1 hours after the burst, we do not detect the candidate afterglow (Kocevski et al., GCN 4528) down to a 3-sigma limiting magnitude of I = 21.6 based on 5 USNO-B1.0 magnitudes.
PROMPT is currently being built and commissioned at CTIO.
GCN Circular #4540
D. Kocevski, J. S. Bloom (UC Berkeley), and E. J. McGrath (UH Institute for Astronomy) report on behalf of a larger collaboration:
"Repeat imaging of the field of GRB060116 with the United Kingdom Infra-Red Telescope (UKIRT) at Mauna Kea begining at 07:28:37.44 UTC on Jan 17th shows that the IR source reported by Kocevski et. al. (GCN 4528) is no longer detected in our images. These observations are consistent with the results reported by Malesani et. al. (GCN 4532) and confirms the variability of the source in the J band. An image of the source and it's subtraction from the Jan 17th data can be found at: http://spacibm.rice.edu/~kocevski/sub.jpg
```
Daniel Kocevski
kocevski@berkeley.edu
www.kocevski.com
Astrophysics, UC Berkeley
832.423.5881
```
GCN Circular #4541
D. Malesani (SISSA/ISAS), P. D'Avanzo (INAF/OABr), G. Chincarini (Univ. Milano-Bicocca), G. Tagliaferri, S. Campana, S. Covino, D. Fugazza (INAF/OABr), A. Fernandez-Soto (Univ. Valencia), M. Della Valle (INAF/OAA), L.A. Antonelli, F. Fiore, S. Piranomonte, and L. Stella (INAF/OAR), report on behalf of the MISTICI collaboration:
We observed the afterglow of GRB 060116 (Campana et al., GCN 4519; Barthelmy et al., GCN 4531). Observations were carried out with the ESO NTT telescope in the J and Ks filters. Observations were taken almost simultaneously to our VLT I-band observations (D'Avanzo, Malesani & Antonelli, GCN 4532), that is ~17 h after the GRB.
We detect the afterglow (Kocevski, Bloom & McGrath, GCNs 4528, 4540) in the J and Ks filters. Calibration was performed against the 2MASS survey. Comparing our measurements to the limit derived by the VLT images, we measure the following colors after correcting for the Galactic absorption (E(B-V) = 0.263):
```
  J-K = 2.5 +- 0.3;
  I-J > 2.9.
```
These colors are very red. If the I-band nondetection is interpreted as a dropout, the inferred redshift is z ~ 6. The very red J-K color may in this case suggest some rest-frame dust absorption, as also hinted by the large column density present in the X-ray spectrum (Campana et al., GCN 4529). Alternatively, an even larger redshift (z~7-8) may suppress part of the J-band emission.
With the present dataset, however, dust emission at lower redshift cannot be excluded.
Further observations and analysis are in progress.
We acknowledge the excellent support of the ESO staff, in particular Michael Sterzik and Cedric Foellmi.
This message can be cited.
GCN Circular #4545
A. Grazian (INAF/OAR), A. Fernandez-Soto (Univ. Valencia), V. Testa (INAF/OAR), P. D'Avanzo (INAF/OABr), L.A. Antonelli (INAF/OAR), D. Malesani (SISSA/ISAS), G. Chincarini (Univ. Milano-Bicocca), G. Tagliaferri, S. Campana, S. Covino (INAF/OABr), M. Della Valle (INAF/OAA), F. Fiore, S. Piranomonte, and L. Stella (INAF/OAR), report on behalf of the MISTICI collaboration:
The near-infrared counterpart (Kocevski, Bloom & McGrath, GCNs 4528, 4540) of GRB 060116 (Campana et al., GCN 4519; Barthelmy et al., GCN 4531) was observed again with the ESO VLT, adopting the FORS1 and ISAAC instruments. Observations were clustered around 2005 Jan 18.1 UT.
The afterglow is clearly detected in the J, H and K filters, and is seen to decline achromatically in J and K, comparing our new measurements with those secured during the night of Jan 16 (D'Avanzo et al., GCN 4532; Malesani et al., GCN 4541). The power law decay index is alpha ~ 1.
The object is also detected in the z band, but is not seen in the I and R filters.
By fitting the available photometry with a power law suppressed by neutral Hydrogen absorption, we measure a photometric redshift z = 6.7 and z = 6.6 for the first and second night, respectively. Combining together the two datasets, we get z = 6.60, the 1-sigma confidence interval being 6.45 < z < 6.75. The observed NIR spectral index (rest-frame UV) is quite steep, indicating significant extinction in the rest frame.
GRB 060116 may thus be the farthest observed GRB, and rank among the most distant objects detected to date in the Universe.
We would like to acknowledge the painstaking work of the ESO staff to perform our service-mode observations. In particular, the ISAAC NIR observations were carried out during technical time. We are particularly grateful to Gianni Marconi, Jose Cortes, Lorena Faundez, Elena Mason, and Dominique Naef.
This message can be cited.
GCN Circular #4568
H. Swan (U Mich), C. Akerlof (U Mich), E. Rykoff (U Mich), S. Yost (U Mich) and I. Smith (Rice), report on behalf of the MARGE collaboration:
The AEOS Burst Camera (ABC) on the AEOS telescope, located at the Maui Space Surveillance System on Haleakala, observed the fading counterpart to GRB 060116 (Swift trigger 177533 (GCN 4519)). Images were taken between 08:45:11 UT (7.7 minutes after it was detected by Swift) and 09:09:38 UT. These are unfiltered optical images. The diffraction grating normally mounted on the ABC was temporarily removed to accommodate observations of the final approach of the NASA Stardust mission. After a comparison of our images with the USNO B 1.0 R2 catalog, we see a fading optical transient centered within 0.06" of the OT reported by Kocevski (GCN 4528). A preliminary analysis gives an R-equivalent magnitude of approximately 20.0+/-0.1 at 08:45:29 UT. Further analysis is in progress.
GCN Circular #4569
Dale A. Frail (NRAO) reports on behalf of a larger collaboration:
"We used the Very Large Array to observe the Swift burst GRB060116 (GCN 4519; GCN 4531) at a frequency of 8.46 GHz on 2006 January 21 and 23. At the position of the IR afterglow (GCN 4540; GCN 4545) we detect a weak radio source.
Further observations are planned to monitor the source and to obtain an accurate flux calibration.
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #4583
S. Piranomonte, V. D'Elia, P. D'Avanzo, D. Malesani, A. Grazian, D. Fugazza, L.A. Antonelli, S. Campana, G. Chincarini, S. Covino, M. Della Valle, A. Fernandez-Soto, F. Fiore, L. Stella, G. Tagliaferri, and V. Testa, report on behalf of the MISTICI collaboration:
"We have performed a more detailed analysis of our optical/NIR photometry (D'Avanzo et al., GCN 4532; Malesani et al., GCN 4541; Grazian et al. GCN 4545) of the afterglow of GRB 060116 (Campana et al., GCN 4519, 4522; Kocevski et al., GCN 4528, 4540).
We compared the available photometry with a power law afterglow, including rest frame dust extinction. The chi square versus z curve presents two minima. The lowest chi square corresponds to the solution with z~6.6 and little rest-frame extinction as reported in GCN 4545. The other minimum corresponds to a solution with z=3.8-4.5 (1 sigma confidence level) and E(B-V)~0.5.
On 2005 January 19, starting at 01:19 UT (about 2.7 days after the GRB), we obtained low resolution spectra of the afterglow of GRB 060116 (Kocevski et al. GCNs 4528, 4540) using VLT+FORS2. The observation consisted of 10 exposures of 1800 seconds each using the grism 300I with a 1" slit under good seeing conditions. A very faint object, close to the detection limit, is visible at the afterglow position in the combined spectrum. Its spectrum may extend down to about 7000 Angstrom blueward. This would be consistent with the lower redshift reported above. However, the statistics is very poor and a robust conclusion can not be drawn at this time. Further analysis is in progress.
We acknowledge the efficient support of the ESO staff at Paranal.
This message can be cited."
GCN Circular #4602
N. R. Tanvir, A. J. Levan, R. S. Priddey (U. Hertfordshire) A. S. Fruchter (STScI), J. Hjorth (DARK Cosmology Centre) report on behalf of a larger collaboration:
We observed the field of GRB060116 (Campana et al . GCN 4539, Kocevski et al. GCN 4528) with HST on Jan 23 and Jan 24. We clearly detect the afterglow in NICMOS/F160W, but only obtain an upper limit in ACS/F775W. A preliminary limit on the I-H vegamag colour is > 5.5.
If the suggested redshift of z=6.6 (Grazian et al. GCN 4545) is correct then very little flux would be expected in the F775W observation, consistent with our results.
However, we note that the location of this GRB is only about a degree east of the Orion Nebula, and although the extinction in this area is not very high, it is patchy and we caution that the Schlegel et al. (1998 ApJ 500 525) extinction estimate for the burst position of Av=1.20 (implying E(I-H)~0.5), may not be reliable. A map of extinction in Orion based on optical star counts by Cambresy (1999 A&A 345 965) suggests a higher extinction Av between 2 and 2.5, but again this is at best an average for the area. A similar star-count analysis available at URL http://darkclouds.term.jp also indicates Av between 2.2 and 2.4 at the position of the burst.
The inferred X-ray column (Campana et al. GCN 4529) if interpretted as purely local extinction gives Av around 4.3+/-1.3, apparently higher than any of the above.

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Jochen Greiner, last update: 26-Jan-2006 [Disclaimer]