Gamma-ray Burst 061006

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 16:47:05 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     232585,   Seg_Num: 0
GRB_RA:          111.090d {+07h 24m 22s} (J2000),
                 110.992d {+07h 23m 58s} (current),
                 111.802d {+07h 27m 12s} (1950)
GRB_DEC:         -79.202d {-79d 12' 05"} (J2000),
                 -79.215d {-79d 12' 54"} (current),
                 -79.100d {-79d 05' 59"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2614 [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:        14014 TJD;   279 DOY;   06/10/06
GRB_TIME:        60350.51 SOD {16:45:50.51} UT
GRB_PHI:         -20.18 [deg]
GRB_THETA:        33.65 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.50 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +2  +0  +0 -11  +1 
SUN_POSTN:       192.23d {+12h 48m 55s}   -5.25d {-05d 14' 46"}
SUN_DIST:         83.21 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        5.99d {+00h 23m 57s}   +3.78d {+03d 47' 03"}
MOON_DIST:        96.50 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.12,-25.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      253.69,-76.11 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
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 = 150.14,-18.71 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 16:48:19 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.019d {+07h 24m 05s} (J2000)
POINT_DEC:       -79.200d {-79d 11' 58"} (J2000)
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  60493.53 SOD {16:48:13.53} UT,   143.0 [sec] since BAT Trigger Time
COUNTS:          8    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    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:     Fri 06 Oct 06 16:49:43 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     232585,   Seg_Num: 0
GRB_RA:          111.090d {+07h 24m 22s} (J2000),
                 110.992d {+07h 23m 58s} (current),
                 111.802d {+07h 27m 12s} (1950)
GRB_DEC:         -79.202d {-79d 12' 05"} (J2000),
                 -79.215d {-79d 12' 54"} (current),
                 -79.100d {-79d 05' 59"} (1950)
GRB_DATE:        14014 TJD;   279 DOY;   06/10/06
GRB_TIME:        60350.51 SOD {16:45:50.51} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -20.18 [deg]
GRB_THETA:        33.65 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.50 [sigma]
LC_URL:          sw00232585000msb.lc
SUN_POSTN:       192.23d {+12h 48m 56s}   -5.25d {-05d 14' 49"}
SUN_DIST:         83.21 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.01d {+00h 24m 03s}   +3.80d {+03d 47' 50"}
MOON_DIST:        96.51 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.12,-25.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      253.69,-76.11 [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 = 150.14,-18.71 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 16:57:19 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.018d {+07h 24m 04s} (J2000)
POINT_DEC:       -79.199d {-79d 11' 56"} (J2000)
POINT_ROLL:      82.362d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  60490.16 SOD {16:48:10.16} UT,   139.7 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.650
N_STARS:         87
X_OFFSET:        585 [pixels]
Y_OFFSET:        549 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1508 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00232585000msufc0139.fits
SUN_POSTN:       192.24d {+12h 48m 57s}   -5.25d {-05d 14' 56"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.08d {+00h 24m 20s}   +3.84d {+03d 50' 07"}
MOON_DIST:        96.52 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.73,-76.12 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 16:57:49 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.018d {+07h 24m 04s} (J2000)
POINT_DEC:       -79.199d {-79d 11' 56"} (J2000)
POINT_ROLL:      82.362d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  60490.16 SOD {16:48:10.16} UT,   139.7 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.650
N_STARS:         87
X_OFFSET:        585 [pixels]
Y_OFFSET:        549 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1508 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00232585000msufc0139.fits
SUN_POSTN:       192.24d {+12h 48m 57s}   -5.25d {-05d 14' 56"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.09d {+00h 24m 21s}   +3.84d {+03d 50' 16"}
MOON_DIST:        96.52 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.73,-76.12 [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:     Fri 06 Oct 06 16:58:38 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.018d {+07h 24m 04s} (J2000)
POINT_DEC:       -79.199d {-79d 11' 56"} (J2000)
ROLL:            82.362d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  60490.16 SOD {16:48:10.16} UT,   139.7 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     181846091
X_OFFSET:        904 [pixels]
Y_OFFSET:        868 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1064
Y_GRB_POS:       1028
BINNING_INDEX:   1
IM_URL:          sw00232585000msuni0139.fits
SUN_POSTN:       192.24d {+12h 48m 57s}   -5.25d {-05d 14' 57"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.09d {+00h 24m 23s}   +3.84d {+03d 50' 30"}
MOON_DIST:        96.52 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.73,-76.12 [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:     Fri 06 Oct 06 16:58:52 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.018d {+07h 24m 04s} (J2000)
POINT_DEC:       -79.199d {-79d 11' 56"} (J2000)
ROLL:            82.362d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  60490.16 SOD {16:48:10.16} UT,   139.7 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     181846091
X_OFFSET:        904 [pixels]
Y_OFFSET:        868 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1064
Y_GRB_POS:       1028
BINNING_INDEX:   1
IM_URL:          sw00232585000msuni0139.fits
SUN_POSTN:       192.24d {+12h 48m 57s}   -5.25d {-05d 14' 57"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.10d {+00h 24m 23s}   +3.84d {+03d 50' 34"}
MOON_DIST:        96.52 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.73,-76.12 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 17:06:11 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     232585,   Seg_Num: 0
GRB_RA:          111.0268d {+07h 24m 06.4s} (J2000),
                 110.9291d {+07h 23m 42.9s} (current),
                 111.7385d {+07h 26m 57.2s} (1950)
GRB_DEC:         -79.1984d {-79d 11' 54.2"} (J2000),
                 -79.2119d {-79d 12' 42.7"} (current),
                 -79.0969d {-79d 05' 48.7"} (1950)
GRB_ERROR:       7.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      4.00 [sigma]
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  60507.09 SOD {16:48:27.09} UT,   156.6 [sec] since BAT Trigger Time
TAM[0-3]:        327.61 237.19 261.35 242.66
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       192.24d {+12h 48m 58s}   -5.25d {-05d 15' 04"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.16d {+00h 24m 39s}   +3.88d {+03d 52' 46"}
MOON_DIST:        96.55 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the burst
ECL_COORDS:      253.72,-76.12 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        TAM values are not valid.   
COMMENTS:        This is a ground generated position notice.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 17:07:16 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
POINT_ROLL:      82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61216.81 SOD {17:00:16.81} UT,   866.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.614
N_STARS:         74
X_OFFSET:        585 [pixels]
Y_OFFSET:        549 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1508 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00232585000msufc0866.fits
SUN_POSTN:       192.24d {+12h 48m 58s}   -5.25d {-05d 15' 05"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.17d {+00h 24m 42s}   +3.88d {+03d 53' 05"}
MOON_DIST:        96.55 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 17:07:43 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
POINT_ROLL:      82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61216.81 SOD {17:00:16.81} UT,   866.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.614
N_STARS:         74
X_OFFSET:        585 [pixels]
Y_OFFSET:        549 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1508 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00232585000msufc0866.fits
SUN_POSTN:       192.24d {+12h 48m 58s}   -5.25d {-05d 15' 06"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.18d {+00h 24m 43s}   +3.89d {+03d 53' 13"}
MOON_DIST:        96.55 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [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:     Fri 06 Oct 06 17:08:48 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
ROLL:            82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61216.81 SOD {17:00:16.81} UT,   866.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     181846818
X_OFFSET:        904 [pixels]
Y_OFFSET:        868 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1064
Y_GRB_POS:       1028
BINNING_INDEX:   1
IM_URL:          sw00232585000msuni0866.fits
SUN_POSTN:       192.24d {+12h 48m 58s}   -5.25d {-05d 15' 07"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.19d {+00h 24m 45s}   +3.89d {+03d 53' 33"}
MOON_DIST:        96.56 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [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:     Fri 06 Oct 06 17:09:09 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
ROLL:            82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61216.81 SOD {17:00:16.81} UT,   866.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     181846818
X_OFFSET:        904 [pixels]
Y_OFFSET:        868 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1064
Y_GRB_POS:       1028
BINNING_INDEX:   1
IM_URL:          sw00232585000msuni0866.fits
SUN_POSTN:       192.24d {+12h 48m 58s}   -5.25d {-05d 15' 07"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.19d {+00h 24m 46s}   +3.89d {+03d 53' 39"}
MOON_DIST:        96.56 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 17:09:18 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
POINT_ROLL:      82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61620.41 SOD {17:07:00.41} UT,   1269.9 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        0.657
N_STARS:         35
X_OFFSET:        585 [pixels]
Y_OFFSET:        549 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1508 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00232585000msufc1269.fits
SUN_POSTN:       192.24d {+12h 48m 59s}   -5.25d {-05d 15' 07"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.19d {+00h 24m 46s}   +3.89d {+03d 53' 42"}
MOON_DIST:        96.56 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Fri 06 Oct 06 17:09:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
POINT_ROLL:      82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61620.41 SOD {17:07:00.41} UT,   1269.9 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        0.657
N_STARS:         35
X_OFFSET:        585 [pixels]
Y_OFFSET:        549 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1508 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00232585000msufc1269.fits
SUN_POSTN:       192.24d {+12h 48m 59s}   -5.25d {-05d 15' 08"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.20d {+00h 24m 47s}   +3.90d {+03d 53' 50"}
MOON_DIST:        96.56 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [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:     Fri 06 Oct 06 17:10:39 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
ROLL:            82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61620.41 SOD {17:07:00.41} UT,   1269.9 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     181847221
X_OFFSET:        904 [pixels]
Y_OFFSET:        868 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1064
Y_GRB_POS:       1028
BINNING_INDEX:   1
IM_URL:          sw00232585000msuni1269.fits
SUN_POSTN:       192.24d {+12h 48m 59s}   -5.25d {-05d 15' 09"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.21d {+00h 24m 49s}   +3.90d {+03d 54' 06"}
MOON_DIST:        96.56 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [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:     Fri 06 Oct 06 17:11:01 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     232585,   Seg_Num: 0
POINT_RA:        111.013d {+07h 24m 03s} (J2000)
POINT_DEC:       -79.197d {-79d 11' 49"} (J2000)
ROLL:            82.367d
IMG_START_DATE:  14014 TJD;   279 DOY;   06/10/06
IMG_START_TIME:  61620.41 SOD {17:07:00.41} UT,   1269.9 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     181847221
X_OFFSET:        904 [pixels]
Y_OFFSET:        868 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1064
Y_GRB_POS:       1028
BINNING_INDEX:   1
IM_URL:          sw00232585000msuni1269.fits
SUN_POSTN:       192.24d {+12h 48m 59s}   -5.25d {-05d 15' 09"}
SUN_DIST:         83.22 [deg]   Sun_angle= 5.4 [hr] (West of Sun)
MOON_POSTN:        6.21d {+00h 24m 50s}   +3.90d {+03d 54' 13"}
MOON_DIST:        96.56 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      291.11,-25.10 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      253.72,-76.12 [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 #5699
P. Schady (MSSL-UCL), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), C. Guidorzi (Univ Bicocca&INAF-OAB), S. T. Holland (GSFC/USRA), S. D. Hunsberger (PSU), V. Mangano (INAF-IASFPA), D. C. Morris (PSU), P. T. O'Brien (U Leicester), C. Pagani (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), S. B. Pandey (UCL-MSSL), J. L. Racusin (PSU), P. Romano (Univ. Bicocca & INAF-OAB), G. Sato (GSFC/ISAS), M. Stamatikos (NASA/ORAU), R. L. C. Starling (U Leicester), D. E. Vanden Berk (PSU) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 16:45:50 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 061006 (trigger=232585). Swift slewed immediately to the burst. The BAT on-board calculated location is RA,Dec 111.090, -79.202 {07h 24m 22s, -79d 12' 05"} (J2000) with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a large peak about 5 seconds long during the pre-planned slew immediately preceding the start of the 64-second image in which the burst was found. The peak count rate was ~5500 counts/sec (15-350 keV), at ~24 sec before the trigger.
The XRT began taking data at 16:48:13 UT, 143 seconds after the BAT trigger. The XRT on-board centroid algorithm did not find a source in the image, but ground analysis of the data found a faint source at a position of RA, Dec = 07h 24m 06.47s, -79d 11' 54.5" (J2000), with an estimated error radius of 8 arcsec (90% containment, including boresight uncertainties). This is 44 arcsec from the BAT position.
UVOT took a finding chart exposure of 400 seconds with the V filter starting 140 seconds after the BAT trigger. The 2.7'x2.7' sub-image covers 25% of the BAT error circle. The typical 3-sigma upper limit has been about 18.5 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 extinction of about 1.1 magnitudes.
GCN Circular #5700
C.G. Mundell (Liverpool JMU), A. Gomboc (University of Ljubljana) C. Guidorzi (Univ Bicocca & INAF-OAB), C.J. Mottram, A. Melandri, I.A. Steele, R.J. Smith, A. Monfardini, D. Carter, S. Kobayashi, D. Bersier, (Liverpool JMU), P. O'Brien, N. Bannister (Leicester) report:
"The 2m Faulkes Telescope South (Siding Spring, Australia) automatically reacted to Swift burst GRB 061006 (Schady et al. GCN Circ. 5699).
We find no new sources in the XRT error circle to R~18.7 +/-0.3 mag at t~20.45 minutes or i'~18.0+/-0.3 mag at 26.3 minutes after the burst
(Magnitudes are calibrated with respect to the USNO-B1)
Observations and analysis are on-going."
GCN Circular #5702
K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey, and Konus GRB teams,
D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas, and A. Zehnder, on behalf of the RHESSI GRB team,
S. Golenetskii, E. Mazets, V. Pal'shin, and D. Frederiks on behalf of the Konus-Wind team, and
K.Yamaoka, M.Ohno, Y.Fukazawa, T.Takahashi, M.Tashiro, Y. Terada, T.Murakami, and K.Makishima on behalf of the Suzaku WAM team, report:
RHESSI, Konus, and Suzaku observed a short duration (<~ 1 s) gamma-ray burst at 60328 s. We have triangulated it to an annulus centered at RA, Dec=193.534, 11.116 degrees, with radius 77.720 +/- 2.080 degrees (3 sigma). The BAT position for Swift 232585 lies 0.051 degrees from the center line of this annulus, and occurs at 60350 s. Thus, this Swift burst might be the same as the earlier IPN event. The spectrum of the IPN burst will be given in a forthcoming GCN Circular. If it turns out to be a hard spectrum burst, then the Swift event could be the soft spectrum portion or afterglow of it.
This IPN annulus can be improved with data from Ulysses and Odyssey, which are expected within 24 hours.
GCN Circular #5703
E. Troja (U. Leicester/INAF-IASFPa), K. L. Page(U. Leicester), D. N. Burrows (PSU) & P. Schady (MSSL-UCL) report on behalf of the Swift-XRT Team:
We have analysed the first 4 orbits of Swift-XRT data obtained for GRB 061006 (GCN Circ. 5699; Schady et al.). Our data set consists of 7.8 ks in Photon Counting (PC) mode.
We derived a XRT refined position of:
```
RA(J2000) = 07h 24m 06.36s 
Dec(J2000) = -79d 11' 56.80''
```
with an estimated error radius of 6 arcsec (90% containment, including boresight uncertainties). This lies 2.3 arcsec from the preliminary XRT position and 45'' arcsec from the on-board calculated BAT position, reported in GCN 5699.
The X-ray lightcurve shows an initial slope of 2.26 +/- 0.10, breaking around 290 s after the burst to a flatter decay slope of 0.77 +/- 0.07.
The time-averaged spectrum (from T+155 s to T+18.6 ks) can be fit with an absorbed power-law with a photon index of 1.7 +/- 0.4 and an absorption column of 1.8e21 cm^-2, consistent at the 90% confidence level with the Galactic value in the direction of the burst (1.33e21 cm^-2). The mean observed (unabsorbed) flux in the 0.2-10 keV energy band is 1.4e-12 (1.9e-12) erg cm^-2 s^-1.
If the afterglow continues decaying at the same rate, the count rate at T+24 h is predicted to be 1.8e-3 cts s^-1, corresponding to an unabsorbed 0.2-10 keV flux of 1.5e-13 erg cm^-2 s^-1.
This circular is an official product of the Swift-XRT team.
GCN Circular #5704
H. Krimm (GSFC/USRA), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (BYU-Idaho), M. Koss (GSFC/UMD), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), P. Schady (MSSL-UCL), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), on behalf of the Swift-BAT team:
Using the data set from T-240 to T+300 sec from the recent telemetry downlink, we report further analysis of BAT GRB 061006 (trigger #232585) (Schady, et al., GCN Circ. 5699). The BAT ground-calculated position is (RA,Dec) = 110.998,-79.195 {07h 23m 59.6s , -79d 11' 42"} [deg; J2000] +-1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 73 %.
This burst began with an intense double-spike from T-22.8 to T-22.3 seconds. This spike was also seen as a short GRB by RHESSI, Konus, and Suzaku (Hurley et al., GCN 5702). This was followed by lower-level persistent emission at least until ~T+110 seconds. T90 (15-350 keV) is 130 +/- 10 s (estimated error including systematics).
The power law index of the time-averaged spectrum of the entire burst is 1.74 +/- 0.17 . The fluence in the 15-150 keV band is (1.43 +/- 0.14) x 10^-6 erg/cm2. The peak 1-sec interval measured from T-23.2 sec, including the initial spikes, has a power law index of 0.93 +/- 0.07 with a photon flux in the 15-150 keV band of 5.36 +/- 0.22 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
Because the initial spikes occurred during a preplanned slew, BAT did not trigger until it had analyzed the first 64 second image following the slew, which contained only this persistent emission.
This light curve of a hard spike followed by a softer persistent emission is characteristic of BAT observations of the 'Short-Hard' class of GRBs.
GCN Circular #5705
Daniele Malesani (SISSA/ISAS), Luigi Stella (INAF/OAR), Stefano Covino (INAF/OABr), Chris Lidman, and Dominique Naef (ESO), report on behalf of the MISTICI collaboration:
We observed the field of the short GRB 061006 (Schady et al., GCN 5699; Krimm et al., GCN 5704), with the ESO-VLT UT2 equipped with FORS1. Observations, carried out in the I band, started on 2006 Oct 7.30728 UT (14.6 hr after the GRB).
Inside the XRT error box (Troja et al., GCN 5703), we find a single, faint source at the coordinates (J2000, 0.5" accuracy):
```
 alpha = 07:24:07.66
 delta = -79:11:55.1
```
There is a further, brighter, pointlike source outside the error circle (9.9" away of the XRT position) at
```
 alpha = 07:24:03.3
 delta = -79:11:52.46
```
At the present stage, it is not clear whether any of these objects is related to the GRB. Further observations are planned to look for variability. There are also no apparent bright galaxies in the proximity of the XRT position.
We acknowledge excellent support from the VLT staff. This message can be cited.
GCN Circular #5710
S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, and T. Cline on behalf of the Konus-Wind team report:
The short hard GRB 061006 (Hurley et al., GCN 5702; Krimm et al., GCN5704; Swift trigger #232585 - Schady et al., GCN 5699) triggered Konus-Wind at T0=60326.896 s UT (16:45:26.896).
As observed by Konus-Wind the burst shows two main multipeaked pulses with a total duration of ~0.5 s. The weak extended tail detected by BAT (Krimm et al., GCN 5704) is marginally seen in the Konus-Wind soft energy range G1 (23-80 keV).
The burst fluence is 3.57(-1.92, +0.31)x10^-6 erg/cm2, and the 16-ms peak flux measured from T0+0.028 s 2.13(-1.20, +0.41)x10^-5 erg/cm2/s (both in the 20 keV - 2 MeV energy range).
The spectrum of the most intense part integrated from T0 to T0+0.256 s (this interval comprises ~2/3 of the burst total counts) is well fitted (in the 20 keV - 2 MeV range) by a power law with exponential cutoff model: dN/dE ~ E^(-alpha) * exp(-(2-alpha)*E/Ep) with alpha = 0.62(-0.21, +0.18) and Ep = 664(-144, +227) keV (chi2 = 36/30 dof).
All the quoted errors are at the 90% confidence level.
GCN Circular #5711
S. B. Pandey and P. Schady (MSSL-UCL) report on behalf of the Swift-UVOT team:
The Swift UVOT began observing the GRB 061006 field (trigger 232585), 129 seconds after the BAT trigger (GCN 5699). No new source was detected in the co-added UVOT observations down to the following 3-sigma magnitude upper limits within the refined XRT error circle (GCN 5703):
```
Filter        T_range (s)    Exposure (s)    3sigma UL

V             129-18315      2131            20.85
B             617-30237      789             21.23
U             593-45827      2534            21.86
W1            569-41793      2902            21.50
M2            545-35908      3462            21.69
W2            633-17402      1318            21.12
```
T_range is calculated from the time of the burst. The upper limits are not corrected for Galactic extinction E(B-V) = 0.32 mag along the line of sight to the burst.
GCN Circular #5717
Y. Urata, M. Tashiro, K. Abe, K. Onda, Y. Sato, M. Suzuki (Saitama U) M. Ohno, T. Takahashi, T. Asano, T. Uehara, Y. Fukazawa (Hiroshima U), K. Yamaoka, S. Sugita (Aoyama Gakuin U), Y. Terada, T. Tamagawa, M. Suzauki (RIKEN), T. Enoto, R. Miyawaki, K. Kokubun, K. Makishima (Univ. of Tokyo), K. Nakazawa, T. Takahashi (ISAS/JAXA), S. Hong (Nihon U.), on behalf of the Suzaku WAM team report:
"The short duration GRB 061006 (Schady et al. #5699, Hurley #5702 ), triggered the Suzaku Wideband All-sky Monitor (WAM), which covers the energy range of 50 keV - 5 MeV, at 16:45:27 UT October 6, 2006. The duration T90 was about 0.42 second. The fluence in 100 - 1000 keV of the burst was about 2.55 x 10-6 erg/cm2. Preliminary result shows that the time-averaged spectrum is well described by a power law with an exponential cutoff as follows.
```
  dN/dE ~  E^{-alpha} * exp(-(2-alpha)*E/Epeak)
  alpha       0.75 (-0.34, +0.28), and
  Epeak       966  (-208,   +386) keV.
```
All the quoted errors are at statistical 90% confidence level, while systematic errors are not included.
The WAM light curve of this event is available at http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/grb_table.html
GCN Circular #5718
Daniele Malesani (SISSA/ISAS), Luigi Stella (INAF/OAR), Paolo D'Avanzo, Stefano Covino (INAF/OABr), Emmanuele Jehin, Chris Lidman, and Dominique Naef (ESO) report on behalf of the MISTICI collaboration
We observed again the field of the short GRB 061006 (Schady et al., GCN 5699; Krimm et al., GCN 5704), with the ESO-VLT UT2 equipped with FORS1. Observations were carried out in the I band (30 minutes on source), and started on 2006 Oct 8.2936 UT (1.60 days after the GRB). The seeing (0.85") was comparable to that of our previous observation.
We still detect the two sources reported by Malesani et al. (GCN 5705). The object inside the XRT error circle (alpha = 07:24:07.66, delta = -79:11:55.1) has faded by 0.53 +- 0.09 mag with respect to our previous observation. We thus suggest that this source is the optical afterglow of GRB 061006, possibly contaminated by the host galaxy. In fact, the inferred power-law decay slope is quite shallow (alpha = 0.50+-0.08). However, the object in the last epoch is not clearly extended.
The lack of a bright galaxy suggests that this short burst is not very nearby.
Further observations are planned.
GCN Circular #5723
E. Troja (U.Leicester,INAF/IASFPa), K. L. Page (U.Leicester), N. Gehrels (NASA/GSFC) and D. N. Burrows (PSU) report on behalf of the Swift XRT team:
Using the first 22 ks of XRT PC observations we detected 6 serendipitous X-ray sources with S/N>3 in the field of view of GRB 061006. Comparing the X-ray centroids to positions of nearby infrared sources, listed in the 2MASS catalogue, we noted that a systematic offset is present. We then improved the XRT position considering three infrared/X-ray associations and we obtained the new X-ray afterglow position:
```
RA(J2000)= 07h 24m 07.33s
Dec(J2000)= -79d 11' 55.77''
```
with a shift of Delta RA=2.73 arcsec and Delta Dec=-1.03 arcsec with respect to the previous one, reported in GCN Circ. 5703. The corresponding error radius is 2.2 arcsec (90% containment). This new position lies 1.1 arcsec from the optical afterglow candidate proposed by Malesani et al. (GCN Circ. 5718).
This circular is an official product of the Swift-XRT team.
GCN Report 6.1
GCN_Report 6.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_6_1.pdf by P.Schady titled: "Swift Observations of GRB 061006"
Redshift z=0.4377 (from host galaxy)
Berger et al., arXiv:astro-ph/0611128
1608.03375 from 12 Aug 16
He Gao et al.: Searching for magnetar powered merger-novae from short GRBs
The merger of a double neutron star (NS-NS) binary may result in a rapidly rotating massive NS with an extremely strong magnetic field (i.e., a millisecond magnetar). In this case, the magnetic spin-down of the NS remnant provides an additional source of sustained energy injection, which would continuously power the merger ejecta. The thermal emission from the merger ejecta would give rise to a bright optical "magnetar-powered merger-nova". In this work, we carry out a complete search for magnetar-powered merger-nova from \emph{Swift} short gamma-ray burst (SGRB) sample. We focus on short GRBs with extended emission or internal plateau, which may signify the presence of magnetars as the central engine. We eventually find three candidates of "magnetar-powered merger-nova" from the late observations of GRB 050724, GRB 070714B and GRB 061006. With standard parameter values, the magentar remnant scenario could well interpret the multi-band data of all three bursts, including the extended emission and their late chromatic features in the optical and X-ray data. The peak luminosities of these merger-novae reach several times $10^{42}~{\rm erg~s^{-1}}$, more than one order of magnitude brighter than traditional "kilo-novae" with peak luminosity of $\sim 10^{41}~{\rm erg~s^{-1}}$. Intense, multi-color late time observations of short GRBs are encouraged to identify more merger-novae in the future.

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Jochen Greiner, last update: 12-Aug-2016 [Disclaimer]