Gamma-ray Burst 070704

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:07:16 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     283791,   Seg_Num: 0
GRB_RA:          354.723d {+23h 38m 54s} (J2000),
                 354.811d {+23h 39m 15s} (current),
                 354.144d {+23h 36m 35s} (1950)
GRB_DEC:         +66.248d {+66d 14' 52"} (J2000),
                 +66.289d {+66d 17' 22"} (current),
                 +65.971d {+65d 58' 15"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2913 [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:        14285 TJD;   185 DOY;   07/07/04
GRB_TIME:        72357.93 SOD {20:05:57.93} UT
GRB_PHI:         174.42 [deg]
GRB_THETA:        42.48 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    16.12 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  +4  +0  +1 -23  +1 
SUN_POSTN:       103.55d {+06h 54m 13s}  +22.85d {+22d 51' 11"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.2 [hr] (West of Sun)
MOON_POSTN:      337.20d {+22h 28m 49s}   -9.88d {-09d 52' 56"}
MOON_DIST:        77.26 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.71,  4.40 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       39.46, 58.70 [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 = 185.70,-3.78 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:09:04 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     283791,   Seg_Num: 0
GRB_RA:          354.4795d {+23h 37m 55.0s} (J2000),
                 354.5666d {+23h 38m 15.9s} (current),
                 353.9027d {+23h 35m 36.6s} (1950)
GRB_DEC:         +66.2842d {+66d 17' 03.1"} (J2000),
                 +66.3258d {+66d 19' 32.8"} (current),
                 +66.0072d {+66d 00' 26.0"} (1950)
GRB_ERROR:       6.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       25 [cnts]
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72510.92 SOD {20:08:30.92} UT,   153.0 [sec] since BAT Trigger Time
CENTROID_X:      420.50,  raw= 421  [pixels]
CENTROID_Y:      422.89,  raw= 423  [pixels]
ROLL:            63.83 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   294.41
GRB_POS_XRT_Z:   278.65
IMAGE_URL:       sw00283791000msxps_rw.img
SUN_POSTN:       103.55d {+06h 54m 13s}  +22.85d {+22d 51' 10"}
SUN_DIST:         76.39 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.22d {+22h 28m 52s}   -9.87d {-09d 52' 28"}
MOON_DIST:        77.26 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.62,  4.46 [deg] galactic lon,lat of the burst
ECL_COORDS:       39.39, 58.80 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:09:04 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     283791,   Seg_Num: 0
GRB_RA:          354.4795d {+23h 37m 55.0s} (J2000),
                 354.5666d {+23h 38m 15.9s} (current),
                 353.9027d {+23h 35m 36.6s} (1950)
GRB_DEC:         +66.2842d {+66d 17' 03.1"} (J2000),
                 +66.3258d {+66d 19' 32.8"} (current),
                 +66.0072d {+66d 00' 26.0"} (1950)
GRB_ERROR:       6.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       3.71e-10 [erg/cm2/sec]
GRB_SIGNIF:      5.00 [sigma]
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72510.92 SOD {20:08:30.92} UT,   153.0 [sec] since BAT Trigger Time
TAM[0-3]:        327.62 237.17 261.24 243.58
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       103.55d {+06h 54m 13s}  +22.85d {+22d 51' 10"}
SUN_DIST:         76.39 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.22d {+22h 28m 52s}   -9.87d {-09d 52' 28"}
MOON_DIST:        77.26 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.62,  4.46 [deg] galactic lon,lat of the burst
ECL_COORDS:       39.39, 58.80 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:09:08 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     283791,   Seg_Num: 0
GRB_RA:          354.4795d {+23h 37m 55.0s} (J2000),
                 354.5666d {+23h 38m 15.9s} (current),
                 353.9027d {+23h 35m 36.6s} (1950)
GRB_DEC:         +66.2842d {+66d 17' 03.1"} (J2000),
                 +66.3258d {+66d 19' 32.8"} (current),
                 +66.0072d {+66d 00' 26.0"} (1950)
GRB_ERROR:       6.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       25 [cnts]
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72510.92 SOD {20:08:30.92} UT,   153.0 [sec] since BAT Trigger Time
CENTROID_X:      420.50,  raw= 421  [pixels]
CENTROID_Y:      422.89,  raw= 423  [pixels]
ROLL:            63.83 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   294.41
GRB_POS_XRT_Z:   278.65
IMAGE_URL:       sw00283791000msxps_rw.img
SUN_POSTN:       103.55d {+06h 54m 13s}  +22.85d {+22d 51' 10"}
SUN_DIST:         76.39 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.22d {+22h 28m 53s}   -9.87d {-09d 52' 27"}
MOON_DIST:        77.26 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.62,  4.46 [deg] galactic lon,lat of the burst
ECL_COORDS:       39.39, 58.80 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:09:52 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     283791,   Seg_Num: 0
GRB_RA:          354.723d {+23h 38m 54s} (J2000),
                 354.811d {+23h 39m 15s} (current),
                 354.144d {+23h 36m 35s} (1950)
GRB_DEC:         +66.248d {+66d 14' 52"} (J2000),
                 +66.289d {+66d 17' 22"} (current),
                 +65.971d {+65d 58' 15"} (1950)
GRB_DATE:        14285 TJD;   185 DOY;   07/07/04
GRB_TIME:        72357.93 SOD {20:05:57.93} UT
TRIGGER_INDEX:   20000
GRB_PHI:         174.42 [deg]
GRB_THETA:        42.48 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    16.12 [sigma]
LC_URL:          sw00283791000msb.lc
SUN_POSTN:       103.55d {+06h 54m 13s}  +22.85d {+22d 51' 10"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.2 [hr] (West of Sun)
MOON_POSTN:      337.23d {+22h 28m 54s}   -9.87d {-09d 52' 16"}
MOON_DIST:        77.25 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.71,  4.40 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       39.46, 58.70 [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 = 185.70,-3.78 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:12:17 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.742d {+23h 38m 58s} (J2000)
POINT_DEC:       +66.245d {+66d 14' 43"} (J2000)
POINT_ROLL:      63.826d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72515.96 SOD {20:08:35.96} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.018
N_STARS:         48
X_OFFSET:        400 [pixels]
Y_OFFSET:        528 [pixels]
X_MAX:           1359 [pixels]
Y_MAX:           1487 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00283791000msufc0158.fits
SUN_POSTN:       103.56d {+06h 54m 14s}  +22.85d {+22d 51' 10"}
SUN_DIST:         76.31 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.25d {+22h 28m 59s}   -9.86d {-09d 51' 38"}
MOON_DIST:        77.24 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.71,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:12:49 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.742d {+23h 38m 58s} (J2000)
POINT_DEC:       +66.245d {+66d 14' 43"} (J2000)
POINT_ROLL:      63.826d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72515.96 SOD {20:08:35.96} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.018
N_STARS:         48
X_OFFSET:        400 [pixels]
Y_OFFSET:        528 [pixels]
X_MAX:           1359 [pixels]
Y_MAX:           1487 [pixels]
DET_THRESH:      19
PHOTO_THRESH:    11
SL_URL:          sw00283791000msufc0158.fits
SUN_POSTN:       103.56d {+06h 54m 14s}  +22.85d {+22d 51' 09"}
SUN_DIST:         76.31 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.25d {+22h 29m 00s}   -9.86d {-09d 51' 30"}
MOON_DIST:        77.23 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.71,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:13:22 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.742d {+23h 38m 58s} (J2000)
POINT_DEC:       +66.245d {+66d 14' 43"} (J2000)
ROLL:            63.826d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72515.96 SOD {20:08:35.96} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     205272518
X_OFFSET:        7 [pixels]
Y_OFFSET:        619 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       167
Y_GRB_POS:       779
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0158.fits
SUN_POSTN:       103.56d {+06h 54m 14s}  +22.85d {+22d 51' 09"}
SUN_DIST:         76.31 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.26d {+22h 29m 01s}   -9.86d {-09d 51' 21"}
MOON_DIST:        77.23 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.71,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:13:44 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.742d {+23h 38m 58s} (J2000)
POINT_DEC:       +66.245d {+66d 14' 43"} (J2000)
ROLL:            63.826d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72515.96 SOD {20:08:35.96} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     205272518
X_OFFSET:        7 [pixels]
Y_OFFSET:        619 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       167
Y_GRB_POS:       779
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0158.fits
SUN_POSTN:       103.56d {+06h 54m 14s}  +22.85d {+22d 51' 09"}
SUN_DIST:         76.31 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.26d {+22h 29m 02s}   -9.85d {-09d 51' 16"}
MOON_DIST:        77.23 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.71,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        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:     Wed 04 Jul 07 20:19:22 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 39"} (J2000)
POINT_ROLL:      63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72621.75 SOD {20:10:21.75} UT,   263.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        4.725
N_STARS:         65
X_OFFSET:        0 [pixels]
Y_OFFSET:        299 [pixels]
X_MAX:           959 [pixels]
Y_MAX:           1258 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    10
SL_URL:          sw00283791000msufc0263.fits
SUN_POSTN:       103.56d {+06h 54m 15s}  +22.85d {+22d 51' 08"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.31d {+22h 29m 14s}   -9.83d {-09d 49' 49"}
MOON_DIST:        77.20 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:19:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 39"} (J2000)
POINT_ROLL:      63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72621.75 SOD {20:10:21.75} UT,   263.8 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        4.725
N_STARS:         65
X_OFFSET:        0 [pixels]
Y_OFFSET:        299 [pixels]
X_MAX:           959 [pixels]
Y_MAX:           1258 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    10
SL_URL:          sw00283791000msufc0263.fits
SUN_POSTN:       103.56d {+06h 54m 15s}  +22.85d {+22d 51' 08"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.31d {+22h 29m 15s}   -9.83d {-09d 49' 42"}
MOON_DIST:        77.20 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:22:22 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 39"} (J2000)
ROLL:            63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72621.75 SOD {20:10:21.75} UT,   263.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     205272623
X_OFFSET:        7 [pixels]
Y_OFFSET:        619 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       167
Y_GRB_POS:       779
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0263.fits
SUN_POSTN:       103.56d {+06h 54m 15s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.33d {+22h 29m 20s}   -9.82d {-09d 49' 02"}
MOON_DIST:        77.18 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:22:43 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 39"} (J2000)
ROLL:            63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  72621.75 SOD {20:10:21.75} UT,   263.8 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     205272623
X_OFFSET:        7 [pixels]
Y_OFFSET:        619 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       167
Y_GRB_POS:       779
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0263.fits
SUN_POSTN:       103.56d {+06h 54m 15s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.34d {+22h 29m 21s}   -9.82d {-09d 48' 57"}
MOON_DIST:        77.18 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:23:16 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
POINT_ROLL:      63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73227.55 SOD {20:20:27.55} UT,   869.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.279
N_STARS:         40
X_OFFSET:        0 [pixels]
Y_OFFSET:        299 [pixels]
X_MAX:           959 [pixels]
Y_MAX:           1258 [pixels]
DET_THRESH:      21
PHOTO_THRESH:    13
SL_URL:          sw00283791000msufc0869.fits
SUN_POSTN:       103.56d {+06h 54m 15s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.34d {+22h 29m 22s}   -9.81d {-09d 48' 48"}
MOON_DIST:        77.18 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:23:39 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
POINT_ROLL:      63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73227.55 SOD {20:20:27.55} UT,   869.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.279
N_STARS:         40
X_OFFSET:        0 [pixels]
Y_OFFSET:        299 [pixels]
X_MAX:           959 [pixels]
Y_MAX:           1258 [pixels]
DET_THRESH:      21
PHOTO_THRESH:    13
SL_URL:          sw00283791000msufc0869.fits
SUN_POSTN:       103.56d {+06h 54m 16s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.34d {+22h 29m 23s}   -9.81d {-09d 48' 42"}
MOON_DIST:        77.18 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:24:45 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
ROLL:            63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73227.55 SOD {20:20:27.55} UT,   869.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     205273229
X_OFFSET:        319 [pixels]
Y_OFFSET:        618 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       479
Y_GRB_POS:       778
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0869.fits
SUN_POSTN:       103.57d {+06h 54m 16s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.35d {+22h 29m 25s}   -9.81d {-09d 48' 25"}
MOON_DIST:        77.17 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:25:01 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
ROLL:            63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73227.55 SOD {20:20:27.55} UT,   869.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     205273229
X_OFFSET:        319 [pixels]
Y_OFFSET:        618 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       479
Y_GRB_POS:       778
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0869.fits
SUN_POSTN:       103.57d {+06h 54m 16s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.36d {+22h 29m 26s}   -9.81d {-09d 48' 21"}
MOON_DIST:        77.17 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:25:58 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
POINT_ROLL:      63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73333.20 SOD {20:22:13.20} UT,   975.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.524
N_STARS:         50
X_OFFSET:        0 [pixels]
Y_OFFSET:        299 [pixels]
X_MAX:           959 [pixels]
Y_MAX:           1258 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00283791000msufc0975.fits
SUN_POSTN:       103.57d {+06h 54m 16s}  +22.85d {+22d 51' 07"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.36d {+22h 29m 28s}   -9.80d {-09d 48' 06"}
MOON_DIST:        77.16 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:26:28 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
POINT_ROLL:      63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73333.20 SOD {20:22:13.20} UT,   975.3 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        2.524
N_STARS:         50
X_OFFSET:        0 [pixels]
Y_OFFSET:        299 [pixels]
X_MAX:           959 [pixels]
Y_MAX:           1258 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00283791000msufc0975.fits
SUN_POSTN:       103.57d {+06h 54m 16s}  +22.85d {+22d 51' 06"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.37d {+22h 29m 29s}   -9.80d {-09d 47' 59"}
MOON_DIST:        77.16 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:27:22 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
ROLL:            63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73333.20 SOD {20:22:13.20} UT,   975.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     205273335
X_OFFSET:        319 [pixels]
Y_OFFSET:        618 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       479
Y_GRB_POS:       778
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0975.fits
SUN_POSTN:       103.57d {+06h 54m 16s}  +22.85d {+22d 51' 06"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.38d {+22h 29m 30s}   -9.80d {-09d 47' 45"}
MOON_DIST:        77.16 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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:     Wed 04 Jul 07 20:27:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     283791,   Seg_Num: 0
POINT_RA:        354.747d {+23h 38m 59s} (J2000)
POINT_DEC:       +66.244d {+66d 14' 38"} (J2000)
ROLL:            63.829d
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  73333.20 SOD {20:22:13.20} UT,   975.3 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     205273335
X_OFFSET:        319 [pixels]
Y_OFFSET:        618 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       479
Y_GRB_POS:       778
BINNING_INDEX:   1
IM_URL:          sw00283791000msuni0975.fits
SUN_POSTN:       103.57d {+06h 54m 16s}  +22.85d {+22d 51' 06"}
SUN_DIST:         76.32 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.38d {+22h 29m 31s}   -9.79d {-09d 47' 39"}
MOON_DIST:        77.15 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.72,  4.39 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       39.46, 58.70 [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 #6594
T. Sakamoto (NASA/ORAU), S. D. Barthelmy (GSFC), A. P. Beardmore (U Leicester), M. M. Chester (PSU), N. Gehrels (NASA/GSFC), O. Godet (U Leicester), S. T. Holland (CRESST/GSFC/USRA), S. Immler (GSFC/UMCP), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), D. M. Palmer (LANL), G. Sato (GSFC/ISAS), B. Sbarufatti (INAF-IASFPA) and R. L. C. Starling (U Leicester) report on behalf of the Swift Team:
At 20:05:57 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 070704 (trigger=283791). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 354.723, +66.248 which is
```
   RA(J2000)  =  23h 38m 54s
   Dec(J2000) = +66d 14' 52"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve does not show anything significant, as is typical for image-trigger events. There is a possibility that the burst started at ~T-70 sec, but since Swift was executing a preplanned slew from ~T-35 to T_0 sec, it is difficult to interpret the TDRSS lightcurve.
The XRT began observing the field at 20:08:30 UT, 153 seconds after the BAT trigger. The on-board XRT position was not correct, because the algorithm centroided on a hot pixel. From the ground data analysis, a moderately bright and uncatalogued X-ray source was found at RA, Dec 354.69922, + 66.25226 which is
```
   RA(J2000)  =  23h 38m 47.8s
   Dec(J2000) =  66d 15' 08.1"
```
with an uncertainty of 5.5 arcseconds (radius, 90% containment). This location is 40.8 arcseconds from the BAT on-board position, outside the BAT error circle. The initial flux in the 2.5s image was 3.7e-10 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 158 seconds after the BAT trigger, and a finding chart exposure of 400 seconds with the V filter starting 265 seconds after the BAT trigger. No afterglow candidate has been found in the initial data products. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT and XRT error circles. The 2.7'x2.7' sub-image does not cover the XRT error circle. The list of sources is typically complete to about 18.0 mag. No correction has been made for the large, but uncertain extinction expected.
Burst Advocate for this burst is T. Sakamoto (takanori AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 04 Jul 07 20:46:57 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     283791,   Seg_Num: 0
GRB_RA:          354.6992d {+23h 38m 47.8s} (J2000),
                 354.7867d {+23h 39m 08.7s} (current),
                 354.1199d {+23h 36m 28.7s} (1950)
GRB_DEC:         +66.2523d {+66d 15' 08.2"} (J2000),
                 +66.2939d {+66d 17' 38.0"} (current),
                 +65.9752d {+65d 58' 30.7"} (1950)
GRB_ERROR:       5.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       6.99e-12 [erg/cm2/sec]
GRB_SIGNIF:      1.00 [sigma]
IMG_START_DATE:  14285 TJD;   185 DOY;   07/07/04
IMG_START_TIME:  78780.00 SOD {21:53:00.00} UT,   6422.1 [sec] since BAT Trigger Time
TAM[0-3]:        327.61 237.19 261.35 242.66
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       103.58d {+06h 54m 20s}  +22.85d {+22d 51' 02"}
SUN_DIST:         76.34 [deg]   Sun_angle= 7.3 [hr] (West of Sun)
MOON_POSTN:      337.55d {+22h 30m 11s}   -9.71d {-09d 42' 41"}
MOON_DIST:        77.05 [deg]
MOON_ILLUM:      80 [%]
GAL_COORDS:      115.70,  4.41 [deg] galactic lon,lat of the burst
ECL_COORDS:       39.45, 58.72 [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.

GCN Circular #6595
T. Sakamoto (NASA/ORAU) on behalf of the Swift Team:
The XRT paragraph in the GCN 6594 contains a error. We stated that the XRT position was "outside" the BAT error circle -- it is, in fact, inside. The corrected XRT paragraph is:
The XRT began observing the field at 20:08:30 UT, 153 seconds after the BAT trigger. The on-board XRT position was not correct, because the algorithm centroided on a hot pixel. From the ground data analysis, a moderately bright and uncatalogued X-ray source was found at RA, Dec 354.69922, + 66.25226 which is
```
   RA(J2000)  =  23h 38m 47.8s
   Dec(J2000) =  66d 15' 08.1"
```
with an uncertainty of 5.5 arcseconds (radius, 90% containment). This location is 40.8 arcseconds from the BAT on-board position and within the BAT error circle. The initial flux in the 2.5s image was 3.7e-10 erg/cm2/s (0.2-10 keV).
We apologize for the mistake. We would like to thank Alex Kann for pointing the error.
GCN Circular #6596
C. Markwardt (GSFC/UMD), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), D. Palmer (LANL), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+523 sec from the recent telemetry downlink, we report further analysis of BAT GRB 070704 (trigger #283791) (Sakamoto, et al., GCN Circ. 6594). The BAT ground-calculated position is RA, Dec = 354.707, 66.257 deg which is
```
   RA(J2000)  = 23h 38m 49.6s 
   Dec(J2000) = 66d 15' 25" 
```
with an uncertainty of 1.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 42%.
The mask-weighted light curve shows the burst started at ~T-65 sec when Swift was executing a preplanned slew. There are multiple peaks with decreasing amplitude with time. The burst almost returns to background during T+110 to T+230 sec, but then has emission from T+250 to T+410 sec. T90 (15-350 keV) is 380 +- 10 sec (estimated error including systematics).
The time-averaged spectrum from T-57.3 to T+400.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.79 +- 0.08. The fluence in the 15-150 keV band is 5.9 +- 0.3 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-53.10 sec in the 15-150 keV band is 2.1 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Circular #6597
P. Schady (MSSL-UCL) and T. Sakamoto (NASA/ORAU) report on the behalf of the Swift UVOT team:
The Swift/UVOT observed the field of GRB 070704 starting 142 s after the BAT trigger (Sakamoto et al. 2007, GCN Circ. 6594). We do not find any source, in any of the UVOT observations, inside the XRT error circle (Sakamoto et al. 2007, GCN Circ. 6594).
The 3-sigma upper limits for detecting a source inside the refined XRT error circle in the initial data products are:
```
Filter    T_mid(s) Exp(s) Mag (3-sigma upper limit)
-------------------------------------------------------
V         654      597    19.16
B         749      10     17.56
U         729      20     17.64
UVW1      5603     439    18.91
UVM2      4431     239    19.36
UVW2      5697     220    19.27
White     574      209    19.65
-----------------------------------------------------------------
```
where T_mid is the weighted mid time of the coadded exposure. The values quoted above are not corrected for the expected Galactic extinction corresponding to a reddening of E_{B-V} = 1.81 mag in the direction of the burst (Schlegel et al. 1998).
GCN Circular #6598
O. Godet (U. Leicester) & T. Sakamoto (GSFC/ISAS) report on behalf the Swift/XRT team
We have analysed the first 8.5ks of Swift XRT PC and WT data of GRB 070704 (Sakamoto et al., GCN Circ. 6594) taken from T0+153s to T0+3e4s. Using 129 s of overlapping XRT Photon Counting mode and UVOT V-band data, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 354.69915, +66.25328 which is equivalent to:
```
RA (J2000):  23 38 47.80
Dec (J2000): +66 15 11.8
```
with an uncertainty of 2.7 arcsec (90% confidence). This is 3.7 arcsec from the initially reported XRT position and 39.4 arcsec from the BAT position (GCN Circ. 6594).
The XRT light curve exhibits an initial decay on which is superposed a large flare peaking around T0+300s. We note that between T0+250s and T0 +410s an emission was also detected in the BAT (Markwardt et al., GCN Circ. 6596). The light-curve from T0+600s to T0+3e4s is fit well by a power-law with a decay index of 0.87 +0.11/-0.12.
The spectrum of the WT data from T0+153s to T0+527s is fit well by an absorbed power-law with a photon index of 1.85 +/-0.06 and column density of N_H = (1.08+/-0.06)e22 cm^-2 in excess of the Galactic value (8.6E21 cm^-2; Dickey & Lockman, 1990). The absorbed (unabsorbed) 0.3-10.0keV flux for that spectrum is (1.57+/-0.05)E-9 (2.85E-9) ergs cm^-2 s^-1. The spectrum of the PC data from T0+530s to T0+3e4s is fit well by an absorbed power-law with a photon index of 1.97+/-0.27 with N_H fixed at 1.08e22 cm^-2. The absorbed (unabsorbed) 0.3-10.0keV flux for that spectrum is (3.3 +0.6/-0.8)E-12 (6.54E-12) ergs cm^-2 s^-1.
Assuming the source continues to decay at the same rate, we predict an XRT count rate of 0.0044 counts/s at T0+24 hours, which corresponds to an observed (unabsorbed) flux of 6.2E-13 (2.9E-12) ergs cm^-2 s^-1.
This circular is an official product of the Swift XRT team.
GCN Report 69.1
GCN_Report 69.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_69_1.pdf by T. Sakamoto at GSFC/ORAU titled: "Swift observations of GRB 070704"
GCN Report 69.2
GCN_Report 69.2 has been posted: http://gcn.gsfc.nasa.gov/reports/report_69_2.pdf by T. Sakamoto at GSFC/ORAU titled: "Corrected Swift observations of GRB 070704"
GCN Circular #6602
A. Melandri (Liverpool JMU), E. Rol, N. Tanvir (U. Leicester) report on behalf of the RoboNet GRB collaborationon:
We observed the field of GRB 070704 (trigger=283791, Sakamoto et al., GCN 6594) with the 2-m Liverpool Telescope about 4.2 hours after the trigger time.
At the revised XRT position (Godet & Sakamoto, GCN 6598) we do not detect any new object in stacked images down to:
```
Filter    t_mid (hr from GRB)    Tot_Exp (s)       Lim
--------------------------------------------------------------
   r'           4.26                 1800           23.0
   i'           5.10                 1800           23.3
--------------------------------------------------------------
```
Magnitudes were calibrated vs R2 and I USNO-B1 magnitude for few selected stars.
GCN Circular #6603
S. Karpov, G. Beskin (Special Astrophysical Observatory of Russian Academy of Sciences, Russia), S. Bondar, E. Ivanov, E. Katkova (Research Institute for Precision Instrumentation, Russia), A. Pozanenko (Space Research Institute, Russia)
report on behalf of the FAVOR team:
The field of GRB 070704 (Sakamoto et al, GCN 6594) has been observed by the FAVOR (FAst Variability Optical Registrator) wide-field fast camera (15 cm diameter, 16x21 deg FOV) located in Russia, North Caucasus, near 6-m telescope since UT 20:05:17 (40 seconds before BAT trigger, 25 seconds after actual burst onset), during the event and for 20 minutes after it with 7.5 frames per second acquisition rate (0.128 s frame exposure). The event occured on the edge of CCD detector and has been affected by the image distortion. The authomatic data reduction and transient detection pipeline, based on the inspection of each pixel statistical properties in time, has not detected any transient event at the XRT position of the source with the limiting magnitude of 10.8 (3-sigma) in the unfiltered light close to V on a single frame.
We performed additional study of the data on T-40s - T+142s time interval (i.e. prior to Swift/UVOT observations). Combining the sets of 100 consecutive images we obtained an upper limit of 13.0 m (3-sigma) on the optical emission over this time span with temporal resolution of 12.8 s.
The message may be cited.
GCN Circular #6616
C. Kira, M. Ohno, T. Uehara, T. Takahashi, Y. Fukazawa (Hiroshima U.), K. Yamaoka, Y. E. Nakagawa, S. Sugita (Aoyama Gakuin U.), K. Morigami, N. Kodaka, K. Onda, M. Tashiro, M. Suzuki,Y. Urata, A. Endo (Saitama U.), T. Enoto, R. Miyawaki, K. Nakawaza, K. Makishima (Univ. of Tokyo), S. Hong (Nihon U.), M. Kokubun, M. Suzuki, T. Takahashi (ISAS/JAXA), E. Sonoda, M. Yamauchi, S. Maeno, H. Tanaka, R. Hara(Univ. of Miyazaki), T. Tamagawa, Y. Terada (RIKEN), and Suzaku WAM team report:
The long burst, GRB 070704 (Swift/BAT trigger #283791; T. Sakamoto et al., GCN Circ. 6594; A. Melandri et al., GCN Circ. 6602; S. Karpov et al., GCN Circ.6603) was triggered at T0=2007-07-04 20:05:02 UT by Suzaku Wide-band All-sky Monitor (WAM) which covers the energy range of 50 keV - 5 MeV. The observed light curve shows the multiple peaked structures with a duration (T90 in the 50-5000 keV band) of nearly 35 seconds. According to the GCN Report 69.2, the light curve observed by Swift BAT shows an upsurge around T0+350, while in the light curve by Suzaku WAM, there is no such a structure.
The fluence in the 100-1000 keV band was (8.4+/-1.7)*10^-6 erg/cm^2, and the 1-s peak flux in the same band was 0.19+/-0.06 photons/cm^2/s. Preliminary result shows that the time-averaged spectrum from T0-5 to T0+40 is well fitted by single power law with a photon index of 2.0+/-0.4 in 100-1000 keV range.
All the quoted errors are at the 90% confidence level, while systematic errors are not included.
The WAM light curve of this event is available at the following URL. http://www.astro.isas.jaxa.jp/suzaku/HXD-WAM/WAM-GRB/grb/trig/grb_table.html
GCN Circular #6617
A. Meshcheryakov, R. Burenin, M. Pavlinsky, R. Sunyaev (IKI), Z. Tunca (TUG), U. Kiziloglu (METU), E. Gogus (Sabanci Uni.), I. Bikmaev, and N. Sakhibullin (KSU/AST) report:
We observed the field of GRB 070704 (Sakamoto et al., GCN 6594) with Russian-Turkish 1.5-m telescope (RTT150, Bakyrlytepe,TUBITAK National Observatory, Turkey). The observations consisted of a series 30-second exposures in g',r',i' filters. , until ~1h after the burst time we continue only r'-filter exposures. The first exposure in g' started at 20:15:13.9UT, i.e.556 s after the BAT trigger. The observations were finished ~1.5 hour after the burst time.
In 30-second images as well as in combined images we do not detect any new object at the revised XRT position (Godet & Sakamoto, GCN 6598) down to following limiting magnitudes:
```
Filter  T_start(sec after trigger) Exp(s)  Lim    
----------------------------------------------------------------------------
  g'     556                       30      20.1    first
                                  240      21.2    combined
  r'     641                       30      20.1    first
                                 1720      22.3    combined
  i'     721                       30      20.3    first
                                  180      21.3    combined
```
This message may be cited.
GCN Report 69.3
GCN_Report 69.3 has been posted: http://gcn.gsfc.nasa.gov/reports/report_69_3.pdf by T. Sakamoto at GSFC/ORAU titled: "Final Swift observations of GRB 070704"
GCN Circular #6634
C. Kira, M. Ohno, T. Uehara, T. Takahashi, Y. Fukazawa (Hiroshima U.), K. Yamaoka, Y. E. Nakagawa, S. Sugita (Aoyama Gakuin U.), M. Tashiro, Y. Urata, A. Endo, K. Onda, M. Suzuki, N. Kodaka, K. Morigami (Saitama U.), T. Enoto, R. Miyawaki, K. Nakawaza, K. Makishima (Univ. of Tokyo), S. Hong (Nihon U.), M. Kokubun, M. Suzuki, T. Takahashi (ISAS/JAXA), E. Sonoda, M. Yamauchi, S. Maeno, H. Tanaka, R. Hara (Univ. of Miyazaki), T. Tamagawa, Y. Terada (RIKEN), and Suzaku WAM team report:
The Suzaku WAM preliminary result of GRB 070704 (Kira et al. GCN Circ. 6616) contained a wrong value in a 1-s peak flux in the 100-1000 keV band. The correct value is 1.2 +/- 0.1 photons/cm^2/s.
We apologize for this mistake.

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Jochen Greiner, last update: 17-Jul-2007 [Disclaimer]