Gamma-ray Burst 060211

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:41:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     181126,   Seg_Num: 0
GRB_RA:           58.402d {+03h 53m 36s} (J2000),
                  58.492d {+03h 53m 58s} (current),
                  57.669d {+03h 50m 41s} (1950)
GRB_DEC:         +21.486d {+21d 29' 09"} (J2000),
                 +21.504d {+21d 30' 13"} (current),
                 +21.338d {+21d 20' 18"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=4077 [image_cnts]
TRIGGER_DUR:     128.000 [sec] 
TRIGGER_INDEX:   20000     E_range: 15-50 keV
BKG_INTEN:       0 [cnts]
BKG_TIME:        -1.00 SOD {00:00:-1.00} UT
BKG_DUR:         0 [sec]
GRB_DATE:        13777 TJD;    42 DOY;   06/02/11
GRB_TIME:        34750.99 SOD {09:39:10.99} UT
GRB_PHI:         178.02 [deg]
GRB_THETA:         5.59 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.55 [sigma]
MERIT_PARAMS:     +1  +0  +0  +7  +1  +2  +0  +0 +14  +1 
SUN_POSTN:       324.88d {+21h 39m 30s}  -14.01d {-14d 00' 20"}
SUN_DIST:         98.37 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.28d {+08h 25m 07s}  +23.93d {+23d 55' 39"}
MOON_DIST:        61.95 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.76,-24.39 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       60.81,  1.19 [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 = 127.82,19.94 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:42:55 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     181126,   Seg_Num: 0
GRB_RA:           58.3858d {+03h 53m 32.5s} (J2000),
                  58.4755d {+03h 53m 54.1s} (current),
                  57.6527d {+03h 50m 36.6s} (1950)
GRB_DEC:         +21.4887d {+21d 29' 19.3"} (J2000),
                 +21.5065d {+21d 30' 23.4"} (current),
                 +21.3412d {+21d 20' 28.4"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       183 [cnts]
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34927.87 SOD {09:42:07.87} UT,   176.9 [sec] since BAT Trigger Time
CENTROID_X:      288.19,  raw= 288  [pixels]
CENTROID_Y:      289.51,  raw= 290  [pixels]
ROLL:            258.15 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -21.89
GRB_POS_XRT_Z:   -30.89
IMAGE_URL:       sw00181126000msxim.img
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.01d {-14d 00' 19"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.29d {+08h 25m 09s}  +23.92d {+23d 55' 27"}
MOON_DIST:        61.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.74,-24.40 [deg] galactic lon,lat of the burst
ECL_COORDS:       60.80,  1.20 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:42:54 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     181126,   Seg_Num: 0
GRB_RA:           58.3858d {+03h 53m 32.5s} (J2000),
                  58.4755d {+03h 53m 54.1s} (current),
                  57.6527d {+03h 50m 36.6s} (1950)
GRB_DEC:         +21.4887d {+21d 29' 19.3"} (J2000),
                 +21.5065d {+21d 30' 23.4"} (current),
                 +21.3412d {+21d 20' 28.4"} (1950)
GRB_ERROR:       5.0 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       6.71e-09 [erg/cm2/sec]
GRB_SIGNIF:      13.52 [sigma]
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34927.87 SOD {09:42:07.87} UT,   176.9 [sec] since BAT Trigger Time
TAM[0-3]:        327.62 237.21 261.26 243.06
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.01d {-14d 00' 19"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.29d {+08h 25m 09s}  +23.92d {+23d 55' 28"}
MOON_DIST:        61.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.74,-24.40 [deg] galactic lon,lat of the burst
ECL_COORDS:       60.80,  1.20 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact; see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:43:43 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     181126,   Seg_Num: 0
GRB_RA:           58.3858d {+03h 53m 32.5s} (J2000),
                  58.4755d {+03h 53m 54.1s} (current),
                  57.6527d {+03h 50m 36.6s} (1950)
GRB_DEC:         +21.4887d {+21d 29' 19.3"} (J2000),
                 +21.5065d {+21d 30' 23.4"} (current),
                 +21.3412d {+21d 20' 28.4"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       183 [cnts]
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34927.87 SOD {09:42:07.87} UT,   176.9 [sec] since BAT Trigger Time
CENTROID_X:      288.19,  raw= 288  [pixels]
CENTROID_Y:      289.51,  raw= 290  [pixels]
ROLL:            258.15 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -21.89
GRB_POS_XRT_Z:   -30.89
IMAGE_URL:       sw00181126000msxim.img
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.01d {-14d 00' 18"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.30d {+08h 25m 11s}  +23.92d {+23d 55' 21"}
MOON_DIST:        61.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.74,-24.40 [deg] galactic lon,lat of the burst
ECL_COORDS:       60.80,  1.20 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:44:39 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     181126,   Seg_Num: 0
GRB_RA:           58.402d {+03h 53m 36s} (J2000),
                  58.492d {+03h 53m 58s} (current),
                  57.669d {+03h 50m 41s} (1950)
GRB_DEC:         +21.486d {+21d 29' 09"} (J2000),
                 +21.504d {+21d 30' 13"} (current),
                 +21.338d {+21d 20' 18"} (1950)
GRB_DATE:        13777 TJD;    42 DOY;   06/02/11
GRB_TIME:        34750.99 SOD {09:39:10.99} UT
TRIGGER_INDEX:   20000
GRB_PHI:         178.02 [deg]
GRB_THETA:         5.59 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     128.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    12.55 [sigma]
LC_URL:          sw00181126000msb.lc
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.01d {-14d 00' 17"}
SUN_DIST:         98.37 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.30d {+08h 25m 13s}  +23.92d {+23d 55' 13"}
MOON_DIST:        61.98 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.76,-24.39 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       60.81,  1.19 [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 = 127.82,19.94 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:47:04 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.485d {+21d 29' 05"} (J2000)
POINT_ROLL:      258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34932.58 SOD {09:42:12.58} UT,   181.6 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.289
N_STARS:         49
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00181126000msufc0181.fits
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.00d {-14d 00' 15"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.33d {+08h 25m 18s}  +23.91d {+23d 54' 53"}
MOON_DIST:        62.00 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:48:15 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.485d {+21d 29' 05"} (J2000)
POINT_ROLL:      258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34932.58 SOD {09:42:12.58} UT,   181.6 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.289
N_STARS:         49
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00181126000msufc0181.fits
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.00d {-14d 00' 14"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.34d {+08h 25m 21s}  +23.91d {+23d 54' 43"}
MOON_DIST:        62.01 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:48:35 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.485d {+21d 29' 05"} (J2000)
ROLL:            258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34932.58 SOD {09:42:12.58} UT,   181.6 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     161343733
X_OFFSET:        758 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       918
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni0181.fits
SUN_POSTN:       324.88d {+21h 39m 31s}  -14.00d {-14d 00' 14"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.34d {+08h 25m 21s}  +23.91d {+23d 54' 40"}
MOON_DIST:        62.02 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:49:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.485d {+21d 29' 05"} (J2000)
ROLL:            258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  34932.58 SOD {09:42:12.58} UT,   181.6 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     161343733
X_OFFSET:        758 [pixels]
Y_OFFSET:        887 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       918
Y_GRB_POS:       1047
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni0181.fits
SUN_POSTN:       324.88d {+21h 39m 32s}  -14.00d {-14d 00' 13"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.35d {+08h 25m 24s}  +23.91d {+23d 54' 29"}
MOON_DIST:        62.03 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [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:     Sat 11 Feb 06 09:53:42 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
POINT_ROLL:      258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35139.54 SOD {09:45:39.54} UT,   388.6 [sec] since BAT Trigger Time
FILTER:          9, B
BKG_MEAN:        2.236
N_STARS:         54
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00181126000msufc0388.fits
SUN_POSTN:       324.88d {+21h 39m 32s}  -14.00d {-14d 00' 10"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.38d {+08h 25m 32s}  +23.90d {+23d 53' 58"}
MOON_DIST:        62.06 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:54:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
POINT_ROLL:      258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35139.54 SOD {09:45:39.54} UT,   388.6 [sec] since BAT Trigger Time
FILTER:          9, B
BKG_MEAN:        2.236
N_STARS:         54
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00181126000msufc0388.fits
SUN_POSTN:       324.89d {+21h 39m 32s}  -14.00d {-14d 00' 09"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.39d {+08h 25m 34s}  +23.90d {+23d 53' 51"}
MOON_DIST:        62.07 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:55:11 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
ROLL:            258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35139.54 SOD {09:45:39.54} UT,   388.6 [sec] since BAT Trigger Time
FILTER:          9, B
EXPOSURE_ID:     161343940
X_OFFSET:        868 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1028
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni0388.fits
SUN_POSTN:       324.89d {+21h 39m 33s}  -14.00d {-14d 00' 08"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.40d {+08h 25m 35s}  +23.90d {+23d 53' 45"}
MOON_DIST:        62.07 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 09:56:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
ROLL:            258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35139.54 SOD {09:45:39.54} UT,   388.6 [sec] since BAT Trigger Time
FILTER:          9, B
EXPOSURE_ID:     161343940
X_OFFSET:        868 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1028
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni0388.fits
SUN_POSTN:       324.89d {+21h 39m 33s}  -14.00d {-14d 00' 07"}
SUN_DIST:         98.36 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.41d {+08h 25m 38s}  +23.89d {+23d 53' 35"}
MOON_DIST:        62.08 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [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:     Sat 11 Feb 06 10:11:25 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
POINT_ROLL:      258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35586.84 SOD {09:53:06.84} UT,   835.8 [sec] since BAT Trigger Time
FILTER:          9, B
BKG_MEAN:        2.039
N_STARS:         55
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00181126000msufc0835.fits
SUN_POSTN:       324.90d {+21h 39m 35s}  -14.00d {-13d 59' 55"}
SUN_DIST:         98.35 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.54d {+08h 26m 09s}  +23.86d {+23d 51' 30"}
MOON_DIST:        62.21 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:12:26 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
POINT_ROLL:      258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35586.84 SOD {09:53:06.84} UT,   835.8 [sec] since BAT Trigger Time
FILTER:          9, B
BKG_MEAN:        2.039
N_STARS:         55
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00181126000msufc0835.fits
SUN_POSTN:       324.90d {+21h 39m 35s}  -14.00d {-13d 59' 54"}
SUN_DIST:         98.35 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.55d {+08h 26m 11s}  +23.86d {+23d 51' 21"}
MOON_DIST:        62.21 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:12:48 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
ROLL:            258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35586.84 SOD {09:53:06.84} UT,   835.8 [sec] since BAT Trigger Time
FILTER:          9, B
EXPOSURE_ID:     161344387
X_OFFSET:        868 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1028
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni0835.fits
SUN_POSTN:       324.90d {+21h 39m 35s}  -14.00d {-13d 59' 54"}
SUN_DIST:         98.35 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.55d {+08h 26m 12s}  +23.86d {+23d 51' 18"}
MOON_DIST:        62.22 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:14:14 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:         58.396d {+03h 53m 35s} (J2000)
POINT_DEC:       +21.486d {+21d 29' 09"} (J2000)
ROLL:            258.147d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35586.84 SOD {09:53:06.84} UT,   835.8 [sec] since BAT Trigger Time
FILTER:          9, B
EXPOSURE_ID:     161344387
X_OFFSET:        868 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1028
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni0835.fits
SUN_POSTN:       324.90d {+21h 39m 36s}  -14.00d {-13d 59' 53"}
SUN_DIST:         98.35 [deg]   Sun_angle= -6.2 [hr] (East of Sun)
MOON_POSTN:      126.56d {+08h 26m 15s}  +23.85d {+23d 51' 06"}
MOON_DIST:        62.23 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:      169.75,-24.40 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       60.81,  1.19 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #4736
C. Hurkett (U Leicester), A. Beardmore (U. Leicester), O. Godet (U. Leicester), J. A. Kennea (PSU), H. Krimm (GSFC/USRA), F. Marshall (GSFC), J. Osborne (U. Leicester), D. Palmer (LANL), A. Parsons (GSFC) on behalf of the Swift Team:
At 09:39:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 060211 (trigger=181126). The BAT on-board calculated location is RA,Dec 58.402d, +21.486d {03h 53m 36s, +21d 29' 09"} (J2000) with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). Since this was a 128 second image trigger, we cannot determine the nature of the light curve from the TDRSS light curve. We will be able to comment on the time structure when we receive the full data set in a few hours. The Swift spacecraft slewed promptly onto the BAT position.
The XRT began observing the field at 09:42:07 UT, 177 seconds after the BAT trigger. XRT found a bright, fading, uncatalogued X-ray source located at RA(J2000) = 03h 53m 32.5s, Dec(J2000) = +21d 29' 19.3", with an estimated uncertainty of 5.0 arcseconds (90% confidence radius). This location is 55 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 6.7e-09 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 200 seconds with the V filter starting 183 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The 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 XRT 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 0.6 magnitudes.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:36:38 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:        211.794d {+14h 07m 11s} (J2000)
POINT_DEC:       +27.677d {+27d 40' 39"} (J2000)
POINT_ROLL:      83.167d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35793.28 SOD {09:56:33.28} UT,   1042.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.378
N_STARS:         52
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00181126000msufc1042.fits
SUN_POSTN:       324.91d {+21h 39m 39s}  -13.99d {-13d 59' 34"}
SUN_DIST:        116.66 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      126.76d {+08h 27m 02s}  +23.80d {+23d 47' 58"}
MOON_DIST:        75.14 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:       39.17, 73.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      197.91, 37.72 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:37:46 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:        211.794d {+14h 07m 11s} (J2000)
POINT_DEC:       +27.677d {+27d 40' 39"} (J2000)
POINT_ROLL:      83.167d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35793.28 SOD {09:56:33.28} UT,   1042.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        1.378
N_STARS:         52
X_OFFSET:        548 [pixels]
Y_OFFSET:        555 [pixels]
X_MAX:           1507 [pixels]
Y_MAX:           1514 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00181126000msufc1042.fits
SUN_POSTN:       324.91d {+21h 39m 40s}  -13.99d {-13d 59' 33"}
SUN_DIST:        116.66 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      126.77d {+08h 27m 04s}  +23.80d {+23d 47' 49"}
MOON_DIST:        75.13 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:       39.17, 73.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      197.91, 37.72 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:38:07 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:        211.794d {+14h 07m 11s} (J2000)
POINT_DEC:       +27.677d {+27d 40' 39"} (J2000)
ROLL:            83.167d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35793.28 SOD {09:56:33.28} UT,   1042.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     161344594
X_OFFSET:        868 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1028
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni1042.fits
SUN_POSTN:       324.91d {+21h 39m 40s}  -13.99d {-13d 59' 33"}
SUN_DIST:        116.66 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      126.77d {+08h 27m 05s}  +23.80d {+23d 47' 46"}
MOON_DIST:        75.13 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:       39.17, 73.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      197.91, 37.72 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 11 Feb 06 10:39:31 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     181126,   Seg_Num: 0
POINT_RA:        211.794d {+14h 07m 11s} (J2000)
POINT_DEC:       +27.677d {+27d 40' 39"} (J2000)
ROLL:            83.167d
IMG_START_DATE:  13777 TJD;    42 DOY;   06/02/11
IMG_START_TIME:  35793.28 SOD {09:56:33.28} UT,   1042.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     161344594
X_OFFSET:        868 [pixels]
Y_OFFSET:        875 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1028
Y_GRB_POS:       1035
BINNING_INDEX:   1
IM_URL:          sw00181126000msuni1042.fits
SUN_POSTN:       324.92d {+21h 39m 40s}  -13.99d {-13d 59' 32"}
SUN_DIST:        116.67 [deg]   Sun_angle= 7.5 [hr] (West of Sun)
MOON_POSTN:      126.78d {+08h 27m 08s}  +23.79d {+23d 47' 34"}
MOON_DIST:        75.12 [deg]
MOON_ILLUM:      97 [%]
GAL_COORDS:       39.17, 73.20 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      197.91, 37.72 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #4737
W. Rujopakarn (U Mich), E.S. Rykoff (U Mich), B. E. Schaefer (Louisiana State), F. Yuan (U Mich), S.A. Yost (U Mich), report on behalf of the ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to GRB 060211 (Hurkett et al., GCN 4736), producing images beginning 6.2 s after the GCN notice time. An automated response took the first image at 09:41:38.2 UT, 147.2 s after the burst, under twilight conditions. We took 10 5-sec, and 100 20-sec exposures. 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 error circle, for both single images and coadding into sets of 10. Individual images have limiting magnitudes ranging from 14.0-16.2; we set the following specific limits.
```
start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?
--------------------------------------------------------------------
09:41:38.2   09:41:43.2         5     14.3          147.2       N
09:41:38.2   09:43:51.7       133     15.7          147.2       Y
09:44:00.9   09:48:44.2       283     16.1          289.9       Y
```
GCN Circular #4738
A. Gomboc, C. Guidorzi, I. A. Steele, S. Kobayashi, C.G. Mundell, A. = Monfardini, A. Melandri,=20 C.J. Mottram, R.J. Smith, D. Bersier,=20 D. Carter, M.F. Bode (Liverpool JMU), P. O'Brien, E. Rol, N. Bannister (U. of Leicester) report:
"The 2-m Faulkes Telescope North robotically followed up GRB060211 (SWIFT trigger 181126, Hurkett et al. GCN 4736) starting 5.4 min after = the GRB trigger time. Within the XRT position, we do not find an optical counterpart to a =20 limiting magnitude of R~18.5 in 3x10s co-added images. In addition, we =20 find no obvious candidates in a 4.6' x 4.6' region centered on the =20 BAT position, to the same limiting magnitude. Limiting magnitude has been derived with reference to USNOB1."
GCN Circular #4740
C. P. Hurkett, K. Page, E. Rol, J. Osborne, O. Godet and A. Beardmore (U Leicester) report on behalf of the Swift XRT team:
We have analysed the Swift XRT data from the first orbit observation of GRB 060211A (Hurkett et al. GCN 4736), with a total Windowed Timing (WT) mode exposure of 195 seconds and Photon Counting (PC) mode exposure of 1040 seconds. The refined XRT position is:
```
RA(J2000) = 03 53 32.8
Dec(J2000) = +21 29 21.0
```
This position is 3.9 arcseconds from the XRT position given in GCN 4736. We estimate an uncertainty of 3.7 arcseconds radius (90% containment).
The 0.3-10 keV light curve in WT and PC mode starts 185 seconds from the BAT trigger. The lightcurve (after only one orbit) appears to exhibit a broken powerlaw behaviour, where both decay indices are steep. The indices are: alpha_1 = 4.14 +/- 0.11, which at 475 seconds (+48/-32) changes to a slower decay of alpha_2 = 2.26 (+0.26/-0.32).
A preliminary spectral fit to the WT data gives a power law photon index of 1.94 +/- 0.07 in the 0.3-10 keV band, where Galactic absorption is assumed to be 1.25e21 cm^-2. An excess absorption component is noted at (7+/-2)e20 cm^-2. In the time range of 185-380 seconds after trigger, the estimated unabsorbed 0.3-10 keV flux is 1.19e-9 ergs/cm2/s. The observed 0.3-10.0 keV flux is 8.54e-10 erg/cm2/s.
Because of the Malindi Gap, only one orbit of data has been analysed so far. We cannot accurately estimate the flux at T+24 hr yet.
This circular is an official product of the Swift XRT Team.
GCN Circular #4741
V. Lipunov, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Belinski, E.Gorbovskoy, A.Krylov, G.Borisov, A.Sankovich, G.Antipov, V.Vladimirov M.Sinitsin, P.Gritsyk
Sternberg Astronomical Institute, Moscow Union 'Optic' MASTER robotic system (http://observ.pereplet.ru) responded to GRB060211.7 (GRB_TIME is 2006-02-11 15:55:14.76). The first image was at 2006-02-11 15:59:57 UT, 00:04:42.24 after the GRB time (after opening the roof under snow). The unfiltered image is calibrated relative to USNO A2.0 (0.8 R + 0.2 B). The robot not find OT-candidate in error box brighter then 14.5 (s/n=3). The reduction is continuing. This work is supported by RFFI 04-02-16411 grant. This message can be cited. Mailto: lipunov@sai.msu.ru
GCN Circular #4751
G. Sato (ISAS), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), C. Hurkett (U Leicester), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), J. Tueller (GSFC) on behalf of the Swift-BAT team:
Using a paritally downloaded data set from T-60 to T+123 sec from a recent telemetry downlink, we report further analysis of BAT GRB 060211A (trigger #181126) (Hurkett, et al., GCN 4736). The BAT ground-calculated position is RA,Dec = 58.361,+21.485 deg {3h 53m 26.6s,+21d 29' 4.4"} (J2000) +- 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
Using data from T-60 to +123, the lightcurve shows some very weak emission starting at T_zero out to T+50, then the bulk of the emission is from T+50 to T+100 with weak emission extending out to T+123 where our downloaded data set currently ends. T90 (15-350 keV) is 43 +- 10 sec (estimated error including systematics).
The time-averaged spectrum from T+47.8 to T+97.1 is best fit by a power law with an exponential cutoff. This fit gives a photon index 0.40 +- 0.64, and an Epeak of 94 +- 49 keV (chi squared 42 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 8.2 +- 0.8 x 10^-07 erg/cm2 and the 1-sec peak flux measured from T+53.94 sec in the 15-150 keV band is 0.3 +- 0.1 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.30 +- 0.14 (chi squared 49 for 57 d.o.f.). All the quoted errors are at the 90% confidence level.
GCN Circular #4757
H. Krimm (GSFC/USRA), L. Barbier (GSFC), S. Barthelmy (GSFC), J. Cummings (GSFC/ORAU), E. Fenimore (LANL), N. Gehrels (GSFC), D. Hullinger (GSFC/UMD), C. Hurkett (U Leicester), C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (ISAS), J. Tueller (GSFC) on behalf of the Swift-BAT team:
Using the data set from T-300 to T+303 sec from a recent telemetry downlink, we report further analysis of the results from BAT GRB 060211A (trigger #181126) (Hurkett, et al., GCN 4736, Sato, et all, GCN 4751). The BAT ground-calculated position is RA,Dec = 58.380, 21.489 deg {3h 53m 31.1s, 21d 29' 20.0"} (J2000) +- 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted lightcurve shows that this was a very long burst. There was a weak, soft precursor starting at T-180 secs and lasting, in the lowest energy band, until T-90 secs. There is another episode of weak emission from T-10 to T+50, and then two prominent peaks from T+50 to T+100 and from T+130 to T+180 secs. The first of the main peaks is harder than the second. There is no significant emission beyond T+190 secs. T90 (15-350 keV) is (126 +- 5) sec (estimated error including systematics).
The time-averaged spectrum from T+47.8 to T+191.0 is best fit by a power law with an exponential cutoff. This fit gives a photon index of 0.85 +- 0.53, and Epeak of 58.3 +- 13.2 keV (chi squared 59 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is (1.5 +- 0.1) x 10^-06 erg/cm2 and the 1-sec peak flux measured from T+145.58 sec in the 15-150 keV band is (0.4 +- 0.1) ph/cm2/sec. A fit to a simple power law gives a photon index of 1.76 +- 0.11 (chi squared 70 for 57 d.o.f.). All the quoted errors are at the 90% confidence level.
GCN Circular #4760
J. Norris, A. Kutyrev (NASA/GSFC), R. Ganguly, R. Canterna, and M. Pierce (U. Wyoming) report:
We observed the refined XRT error box reported by Hurkett et al. (GCN 4740) for the very long burst, GRB 060211a (Swift trigger #181126; Hurkett et al. GCN 4736; Krimm et al. GCN 4757) with the 2.3-meter WIRO telescope.
Observations commenced at 2006/02/12 02:44 UT (17 hrs after the burst) and continued until 03:24 UT. We obtained thirty-six 50-s integrations in the J band under poor seeing conditions. In the stacked image, no source was detected within the XRT error circle to a limit of J = 19.1 (3-sigma upper limit).
GCN Circular #4927
D. Sharapov (MAO, and NOT, La Palma), M. Ibrahimov, (MAO), A. Pozanenko (IKI) and V. Rumyantsev (CrAO) on behalf of larger GRB follow up collaboration report:
We observed the refined XRT error box reported by Hurkett et al. (GCN 4740) of GRB 060211A (Hurkett et al. GCN 4736; Krimm et al. GCN 4757) with 1.5m telescope of Maidanak Astronomical Observatory in R-band on Feb. 11 (UT) 15:02 - 15:22. The limiting magnitude is based on USNO B1.0:
```
Mid. time,   Exp.,   Limit,  Seeing
(UT)         (s)

Feb.11.640   1860    22.0    ~1.5"
```
The extended object in the FOV with coordinates RA(J2000)= 03:53:31 (+/- 10 arcsec) Dec(J2000)= +21:28:58 (+/- 10 arcsec) with R~21.5 is the asteroid 16306 moving toward N-E.
The combined image can be found in http://grb.rssi.ru/GRB060211/GRB060211_AZT22R.jpg
GCN Circular #5204
Y. Urata (Saitama-U), M. Kuwahara (TUS/RIKEN), M. Tashiro, K. Abe, K. Onda, N. Kodaka, K. Masuno (Saitama-U), F. Usui (ISAS/JAXA), T. Tamagawa (RIKEN) report:
"WIDGET has continuously monitored the entire error region of the GRB 060211A (Hurkett et al. GCN 4736, 4740) with repeat of unfiltered 5-second exposures during the night of 11th February. The 1-sigma limiting magnitude of images taken between 792 seconds before and 321 seconds after the burst was around V=10.8 magnitude. The magnitude was derived by the Tycho-2 catalog. There was no significant emission from the X-ray afterglow position up to the limiting magnitudes."
This message maybe cited.

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Jochen Greiner, last update: 03-Jun-2006 [Disclaimer]