Gamma-ray Burst 070419B

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 10:44:26 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     276212,   Seg_Num: 0
GRB_RA:          315.719d {+21h 02m 52s} (J2000),
                 315.829d {+21h 03m 19s} (current),
                 314.959d {+20h 59m 50s} (1950)
GRB_DEC:         -31.267d {-31d 15' 59"} (J2000),
                 -31.237d {-31d 14' 14"} (current),
                 -31.465d {-31d 27' 52"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4636 [cnts]    Image_Peak=173 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       27576 [cnts]
BKG_TIME:        38630.09 SOD {10:43:50.09} UT
BKG_DUR:         8 [sec]
GRB_DATE:        14209 TJD;   109 DOY;   07/04/19
GRB_TIME:        38645.97 SOD {10:44:05.97} UT
GRB_PHI:          20.08 [deg]
GRB_THETA:        30.28 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     17.43 [sigma]
IMAGE_SIGNIF:    7.02 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  +5  +0  +0 -17  +1 
SUN_POSTN:        26.96d {+01h 47m 51s}  +11.12d {+11d 07' 14"}
SUN_DIST:         80.14 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:       53.44d {+03h 33m 45s}  +24.18d {+24d 11' 03"}
MOON_DIST:       108.40 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.50 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      309.06,-13.82 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Coordinates.  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 8.32,9.93 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 10:47:17 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     276212,   Seg_Num: 0
GRB_RA:          315.7067d {+21h 02m 49.6s} (J2000),
                 315.8174d {+21h 03m 16.1s} (current),
                 314.9469d {+20h 59m 47.2s} (1950)
GRB_DEC:         -31.2635d {-31d 15' 48.6"} (J2000),
                 -31.2344d {-31d 14' 03.8"} (current),
                 -31.4615d {-31d 27' 41.3"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       292 [cnts]
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38726.79 SOD {10:45:26.79} UT,   80.8 [sec] since BAT Trigger Time
CENTROID_X:      311.18,  raw= 311  [pixels]
CENTROID_Y:      305.65,  raw= 306  [pixels]
ROLL:            70.53 [deg]
GAIN:            8
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   18.04
GRB_POS_XRT_Z:   20.95
IMAGE_URL:       sw00276212000msxps_rw.img
SUN_POSTN:        26.96d {+01h 47m 52s}  +11.12d {+11d 07' 17"}
SUN_DIST:         80.15 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:       53.47d {+03h 33m 53s}  +24.19d {+24d 11' 31"}
MOON_DIST:       108.44 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the burst
ECL_COORDS:      309.05,-13.81 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
COMMENTS:        This notice was forced out after watchdog timer expiring -- most likely due to missing packet(s).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 10:47:21 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     276212,   Seg_Num: 0
GRB_RA:          315.7067d {+21h 02m 49.6s} (J2000),
                 315.8174d {+21h 03m 16.1s} (current),
                 314.9469d {+20h 59m 47.2s} (1950)
GRB_DEC:         -31.2635d {-31d 15' 48.6"} (J2000),
                 -31.2344d {-31d 14' 03.8"} (current),
                 -31.4615d {-31d 27' 41.3"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       292 [cnts]
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38726.79 SOD {10:45:26.79} UT,   80.8 [sec] since BAT Trigger Time
CENTROID_X:      311.18,  raw= 311  [pixels]
CENTROID_Y:      305.65,  raw= 306  [pixels]
ROLL:            70.53 [deg]
GAIN:            8
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   18.04
GRB_POS_XRT_Z:   20.95
IMAGE_URL:       sw00276212000msxps_rw.img
SUN_POSTN:        26.96d {+01h 47m 52s}  +11.12d {+11d 07' 17"}
SUN_DIST:         80.15 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:       53.47d {+03h 33m 53s}  +24.19d {+24d 11' 31"}
MOON_DIST:       108.44 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the burst
ECL_COORDS:      309.05,-13.81 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 10:47:17 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     276212,   Seg_Num: 0
GRB_RA:          315.7067d {+21h 02m 49.6s} (J2000),
                 315.8174d {+21h 03m 16.1s} (current),
                 314.9469d {+20h 59m 47.2s} (1950)
GRB_DEC:         -31.2635d {-31d 15' 48.6"} (J2000),
                 -31.2344d {-31d 14' 03.8"} (current),
                 -31.4615d {-31d 27' 41.3"} (1950)
GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.46e-08 [erg/cm2/sec]
GRB_SIGNIF:      17.08 [sigma]
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38726.79 SOD {10:45:26.79} UT,   80.8 [sec] since BAT Trigger Time
TAM[0-3]:        327.60 237.20 261.38 243.34
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        26.96d {+01h 47m 52s}  +11.12d {+11d 07' 17"}
SUN_DIST:         80.15 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:       53.47d {+03h 33m 53s}  +24.19d {+24d 11' 31"}
MOON_DIST:       108.44 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the burst
ECL_COORDS:      309.05,-13.81 [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:     Thu 19 Apr 07 10:48:58 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     276212,   Seg_Num: 0
GRB_RA:          315.719d {+21h 02m 52s} (J2000),
                 315.829d {+21h 03m 19s} (current),
                 314.959d {+20h 59m 50s} (1950)
GRB_DEC:         -31.267d {-31d 15' 59"} (J2000),
                 -31.237d {-31d 14' 14"} (current),
                 -31.465d {-31d 27' 52"} (1950)
GRB_DATE:        14209 TJD;   109 DOY;   07/04/19
GRB_TIME:        38645.97 SOD {10:44:05.97} UT
TRIGGER_INDEX:   155
GRB_PHI:          20.08 [deg]
GRB_THETA:        30.28 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     17.43 [sigma]
IMAGE_SIGNIF:    7.02 [sigma]
LC_URL:          sw00276212000msb.lc
SUN_POSTN:        26.97d {+01h 47m 52s}  +11.12d {+11d 07' 18"}
SUN_DIST:         80.14 [deg]   Sun_angle= 4.7 [hr] (West of Sun)
MOON_POSTN:       53.49d {+03h 33m 57s}  +24.20d {+24d 11' 47"}
MOON_DIST:       108.45 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.50 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      309.06,-13.82 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT-BAT GRB Lightcurve.  
COMMENTS:           
COMMENTS:        The next comments were copied from the BAT_POS Notice:  
COMMENTS:        This is a rate trigger.  
COMMENTS:        A point_source was found.  
COMMENTS:        This does not match any source in the on-board catalog.  
COMMENTS:        This does not match any source in the ground catalog.  
COMMENTS:        This is a GRB.  
COMMENTS:        This trigger occurred at longitude,latitude = 8.32,9.93 [deg].  
COMMENTS:        The 3rd packet (of 3) was missing in the lightcurve data stream.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 11:03:41 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.267d {-31d 15' 59"} (J2000)
POINT_ROLL:      70.533d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38735.26 SOD {10:45:35.26} UT,   89.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.468
N_STARS:         51
X_OFFSET:        496 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1455 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00276212000msufc0089.fits
SUN_POSTN:        26.98d {+01h 47m 54s}  +11.13d {+11d 07' 31"}
SUN_DIST:         80.15 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.65d {+03h 34m 35s}  +24.24d {+24d 14' 12"}
MOON_DIST:       108.60 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.50 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.82 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 11:04:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.267d {-31d 15' 59"} (J2000)
POINT_ROLL:      70.533d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38735.26 SOD {10:45:35.26} UT,   89.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.468
N_STARS:         51
X_OFFSET:        496 [pixels]
Y_OFFSET:        568 [pixels]
X_MAX:           1455 [pixels]
Y_MAX:           1527 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00276212000msufc0089.fits
SUN_POSTN:        26.98d {+01h 47m 54s}  +11.13d {+11d 07' 31"}
SUN_DIST:         80.15 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.65d {+03h 34m 37s}  +24.24d {+24d 14' 16"}
MOON_DIST:       108.61 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.50 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.82 [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:     Thu 19 Apr 07 11:05:47 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.267d {-31d 15' 59"} (J2000)
ROLL:            70.533d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38735.26 SOD {10:45:35.26} UT,   89.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     198672337
X_OFFSET:        743 [pixels]
Y_OFFSET:        877 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       903
Y_GRB_POS:       1037
BINNING_INDEX:   1
IM_URL:          sw00276212000msuni0089.fits
SUN_POSTN:        26.98d {+01h 47m 54s}  +11.13d {+11d 07' 33"}
SUN_DIST:         80.16 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.67d {+03h 34m 41s}  +24.24d {+24d 14' 33"}
MOON_DIST:       108.62 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.50 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.82 [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:     Thu 19 Apr 07 11:06:10 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.267d {-31d 15' 59"} (J2000)
ROLL:            70.533d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38735.26 SOD {10:45:35.26} UT,   89.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     198672337
X_OFFSET:        743 [pixels]
Y_OFFSET:        877 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       903
Y_GRB_POS:       1037
BINNING_INDEX:   1
IM_URL:          sw00276212000msuni0089.fits
SUN_POSTN:        26.98d {+01h 47m 54s}  +11.13d {+11d 07' 33"}
SUN_DIST:         80.16 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.67d {+03h 34m 42s}  +24.24d {+24d 14' 36"}
MOON_DIST:       108.63 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.50 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.82 [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:     Thu 19 Apr 07 11:09:09 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.265d {-31d 15' 52"} (J2000)
POINT_ROLL:      70.535d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38841.01 SOD {10:47:21.01} UT,   195.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        4.206
N_STARS:         45
X_OFFSET:        423 [pixels]
Y_OFFSET:        557 [pixels]
X_MAX:           1382 [pixels]
Y_MAX:           1516 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00276212000msufc0195.fits
SUN_POSTN:        26.98d {+01h 47m 55s}  +11.13d {+11d 07' 35"}
SUN_DIST:         80.16 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.71d {+03h 34m 50s}  +24.25d {+24d 15' 06"}
MOON_DIST:       108.66 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.81 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Apr 07 11:09:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.265d {-31d 15' 52"} (J2000)
POINT_ROLL:      70.535d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38841.01 SOD {10:47:21.01} UT,   195.0 [sec] since BAT Trigger Time
FILTER:          3, V
BKG_MEAN:        4.206
N_STARS:         45
X_OFFSET:        423 [pixels]
Y_OFFSET:        557 [pixels]
X_MAX:           1382 [pixels]
Y_MAX:           1516 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00276212000msufc0195.fits
SUN_POSTN:        26.98d {+01h 47m 55s}  +11.13d {+11d 07' 36"}
SUN_DIST:         80.16 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.71d {+03h 34m 50s}  +24.25d {+24d 15' 09"}
MOON_DIST:       108.66 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.81 [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:     Thu 19 Apr 07 11:10:29 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.265d {-31d 15' 52"} (J2000)
ROLL:            70.535d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38841.01 SOD {10:47:21.01} UT,   195.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     198672442
X_OFFSET:        743 [pixels]
Y_OFFSET:        877 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       903
Y_GRB_POS:       1037
BINNING_INDEX:   1
IM_URL:          sw00276212000msuni0195.fits
SUN_POSTN:        26.98d {+01h 47m 55s}  +11.13d {+11d 07' 37"}
SUN_DIST:         80.16 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.72d {+03h 34m 53s}  +24.26d {+24d 15' 19"}
MOON_DIST:       108.67 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.81 [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:     Thu 19 Apr 07 11:10:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     276212,   Seg_Num: 0
POINT_RA:        315.715d {+21h 02m 52s} (J2000)
POINT_DEC:       -31.265d {-31d 15' 52"} (J2000)
ROLL:            70.535d
IMG_START_DATE:  14209 TJD;   109 DOY;   07/04/19
IMG_START_TIME:  38841.01 SOD {10:47:21.01} UT,   195.0 [sec] since BAT Trigger Time
FILTER:          3, V
EXPOSURE_ID:     198672442
X_OFFSET:        743 [pixels]
Y_OFFSET:        877 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       903
Y_GRB_POS:       1037
BINNING_INDEX:   1
IM_URL:          sw00276212000msuni0195.fits
SUN_POSTN:        26.98d {+01h 47m 55s}  +11.13d {+11d 07' 37"}
SUN_DIST:         80.16 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       53.72d {+03h 34m 54s}  +24.26d {+24d 15' 21"}
MOON_DIST:       108.67 [deg]
MOON_ILLUM:      6 [%]
GAL_COORDS:       13.70,-40.49 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      309.06,-13.81 [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 Circular #6305
A. M. Parsons (GSFC), D. N. Burrows (PSU), M. Capalbi (ASDC), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Gronwall (PSU), C. Guidorzi (Univ Bicocca&INAF-OAB), W. B. Landsman (NASA/GSFC), C. B. Markwardt (GSFC/UMD), F. E. Marshall (NASA/GSFC), P. T. O'Brien (U Leicester), D. M. Palmer (LANL), M. Perri (ASDC), P. Romano (Univ. Bicocca & INAF-OAB), E. Troja (INAF-IASFPA) and H. Ziaeepour (UCL-MSSL) report on behalf of the Swift Team:
At 10:44:05 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 070419B (trigger=276212). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 315.719, -31.267 which is
```
   RA(J2000) = 21h 02m 52s
   Dec(J2000) = -31d 15' 59"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows multiple peaks, with a duration of about 160 seconds. The peak count rate was ~2500 counts/sec (15-350 keV), at ~0 sec after the trigger. We note that this burst is distinct from GRB 070419A (trigger 276206).
The XRT began observing the field at 10:45:26 UT, 81 seconds after the BAT trigger. XRT found a bright, fading and uncatalogued X-ray source located at RA, Dec 315.7067, -31.2635 which is
```
   RA(J2000)  =  21h 02m 49.6s
   Dec(J2000) = -31d 15' 48.6"
```
with an uncertainty of 5 arcseconds (radius, 90% containment). This location is 40 arcseconds from the BAT on-board position, within the BAT error circle. The initial flux in the 2.5s image was 1.5e-08 erg/cm2/s (0.2-10 keV).
UVOT took a finding chart exposure of 100 seconds with the White (160-650 nm) filter starting 89 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 18.5 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 mag. No correction has been made for extinction.
GCN Circular #6312
P. Tristram (MOA, Univ. of Canterbury), A. J. Castro-Tirado, A. de Ugarte Postigo (IAA-CSIC Granada), A. Gilmore, P. Kilmartin (Univ. of Canterbury), J. Gorosabel, M. Jel=EDnek and R. Cunniffe (IAA-CSIC Granada),
report:
"Following the detection by Swift of the GRB 070419B (Parson et al. GCNC 6305), we have obtained R & I -band images at the 0.6m B&C telescope at the Mt. John Observatory on Lake Tekapo, New Zealand. They were taken starting on Apr 19.537 UT (i.e. 2.17 hr post-burst).
The single frames (300s in R) reveal a point-like source with R ~ 20 consistent with the Swift/XRT error box which is not present in the DSS-2 red. Preliminary coordinates (+/- 1") yield:
```
AR(2000): 21:02:49.80
Dec(2000): -31:15:49.23
```
Observations are ongoing. More details will be given on forthcoming GCN Circular."
GCN Circular #6314
P. Tristram (MOA, Univ. of Canterbury), A. J. Castro-Tirado, A. de Ugarte Postigo (IAA-CSIC Granada), A. Gilmore, P. Kilmartin (Univ. of Canterbury), J. Gorosabel, M. Jel=EDnek and R. Cunniffe (IAA-CSIC Granada),
report:
"Following the detection by Swift of the GRB 070419B (Parson et al. GCNC 6305), we have obtained R & I -band images at the 0.6m B&C telescope at the Mt. John Observatory on Lake Tekapo, New Zealand. They were taken starting on Apr 19.537 UT (i.e. 2.17 hr post-burst).
The single frames (360s in R) reveal a point-like source with R ~ 20 consistent with the Swift/XRT error box which is not present in the DSS-2 red. Preliminary coordinates (+/- 1") yield:
```
AR(2000): 21:02:49.80
Dec(2000): -31:15:49.23
```
More details will be given on forthcoming GCN Circular."
This message can be quoted.
GCN Circular #6321
A. de Ugarte Postigo, M. Jel=EDnek (IAA-CSIC Granada), P. Tristram (MOA, Univ. of Canterbury), I. Bond (Massey Univ.), Ph. Yock (Univ. of Auckland), J. Hearnshaw (Univ. of Christchurch) and A. J. Castro- Tirado (IAA-CSIC), on behalf of a larger collaboration,
report:
"We have continued the BVRI optical monitoring of the proposed optical afterglow (Tristram et al. GCNC 6312) to GRB 070419B (Parson et al. GCNC 6305) with the 0.6m B&C telescope at the Mt. John Observatory on Lake Tekapo. We confirm the detection in the VRI -bands and a derive a complex lightcurve (preliminary analysis shows a steep decline up to T0 + 0.2 days and a plateau phase lasting until the end of our observations at T0 + 0.3 days with R ~ 21.0).
A more accurated astrometry (+/- 0.5") yields:
```
AR(2000): 21:02:49.78
Dec(2000): -31:15:48.8
```
A finding chart is posted at: http://www.iaa.es/~deugarte/GRBs/070419B/GRB070419B.gif
Spectroscopic and photometric observations are encouraged."
This message can be quoted.
GCN Circular #6323
We have analyzed the first 3 orbits of Swift-XRT data on GRB 070419B (Parsons et al. GCN 6305), with a total exposure of 276 s in Windowed Timing (WT) mode and of 4.5 ks in Photon Counting (PC) mode. This provides a refined XRT position at RA,DEC=315.70654,-31.26381 which is:
```
RA(J2000)=21 02 49.57
Dec(J2000)=-31 15 49.7
```
with an estimated error radius of 3.5 arcseconds (90% confidence). This position is 32 arcseconds from the BAT position (Parsons et al. GCN 6305), 1.2 arcseconds from the initial XRT position (Parsons et al. GCN 6305) and 3.0 arcseconds from the optical candidate (Tristram et al. GCN 6314).
The 0.3-10 keV X-ray light curve presents a flaring behavior starting from 88 s up to about 350 s after the burst, with three flares. The second and third orbits data taken in PC mode show marginal evidence of a flat decay between 3.8 ks and 6.0 ks after the trigger, followed by a fading decay behavior that can be fit with a power law model with decay index 1.3+/-0.1
The X-ray spectrum from the XRT/WT data from 88 s to about 350 s can be fit by an absorbed power law with a photon index of 1.88+/-0.03 and a total column density of NH=(0.22+/-0.01)e22 cm**-2. We note that the Galactic column density in the direction of the source is 6.7e20 cm**-2 (Dickey & Lockmann 1990).
Assuming the X-ray emission continues to decline at the same rate, we predict a 0.3-10.0 keV XRT count rate of 7.5e-2 count/s at T+24h and 3.1e-2 at T+48h.
This circular is an official product of the Swift Team.
GCN Circular #6325
B. Schmidt (ANU) and G. Mackie (Swinburne) report on behalf of a larger collaboration
We have obtained R and I photometry of GRB070419B (Parson et al. GCN 6305) with the ANU 1m telescope + WFI at Siding Spring observatory. I images taken Apr 19.737-19.748 and R images taken at Apr 19.753-19.757 confirm the source of Tristram et al. (GCN 6312) at a position
```
    RA  (2000):   21:02:49.82
    DEC(2000):  -31:15:49.3
```
with a position uncertainty +/- 0.1" referenced to the UCAC2 catalog.
The R and I magnitudes are estimate to be ~ I=20.7, R=22.1 referenced to the UCAC2/2Mass star located at 21:02:59.34 -31:18:13.4 with mag ~I=14.75, R=15.25. This is significantly fainter than observed by Tristram et al., and suggests strongly that this object is associated with GRB07419B.
GCN Circular #6327
D. Palmer (LANL), L. Barbier (GSFC), S. D. Barthelmy (GSFC), J. Cummings (GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), H. Krimm (GSFC/USRA), C. Markwardt (GSFC/UMD), A. Parsons (GSFC), T. Sakamoto (GSFC/ORAU), G. Sato (GSFC/ISAS), M. Stamatikos (GSFC/ORAU), and J. Tueller (GSFC) on behalf of the Swift-BAT team:
Using the data set from T-239.9 to T+602.1 sec from the recent telemetry downlink, we report further analysis of BAT GRB 070419 (trigger #276212) (Parsons, et al., GCN Circ. 6305). The BAT ground-calculated position is RA, Dec = 315.709, -31.266 deg which is
```
     RA(J2000) = 21h 2m 50.2s
     Dec(J2000) = -31d 15' 58.3"
```
with an uncertainty of 1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 66%.
The mask-weighted light curve exhibits 4 main peaks at ~T+0 s,T+25s, T+35s, and T+60s and its duration T90 (15-350 keV) is 236.5 +-12 sec (estimated error including systematics).
The time-averaged spectrum from -11.7 to 314.8 s is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.70 +- 0.05. The fluence in the 15-150 keV band is 7.5 +- 0.2 x 10^-6 erg/cm2.The 1-sec peak photon flux measured from T-0.28 sec in the 15-150 keV band is 1.4 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
GCN Report 49.1
GCN_Report 49.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_49_1.pdf by A. Parsons at GSFC titled: "Swift Observations of GRB 070419B"
GCN Circular #6348
T. Enoto, R. Miyawaki, K. Nakawaza, K. Makishima (Univ. of Tokyo), Y. E. Nakagawa, S. Sugita, K. Yamaoka (Aoyama Gakuin U.), M. Ohno, T. Takahashi, T. Uehara, C. Kira, Y. Fukazawa (Hiroshima U.), Y. Urata, K. Onda, M. Suzuki, K. Morigami, N. Kodaka, M. Tashiro (Saitama U.), M. Suzuki, T. Tamagawa, Y. Terada (RIKEN), S. Hong (Nihon U.), M. Kokubun, T. Takahashi (ISAS/JAXA), E. Sonoda, M. Yamauchi (Univ. of Miyazaki), and the Suzaku WAM team report:
The long GRB 070419B (Swift/BAT trigger #276212 ; Parsons et al., GCN 6305; Palmer et al., GCN 6327), was detected at 10:44:01 UT (=T0) by the Suzaku Wide-band All-sky Monitor (WAM) which covers an energy range of 50 keV - 5 MeV. The observed light curve shows two separate peak structures with a duration (T90) of about 71 seconds. The fluence in 100-1000 keV was (1.1 +/-0.2) X 10^-5 erg/cm^2. The 1-s peak flux was 0.9 +/-0.1 photons/cm^2/s in the same energy range.
Preliminary result shows that time-averaged spectrum from T0-5 to T0+83 sec is well fitted by a single power law with a photon index of 1.7 +/-0.2.
All the quoted errors are at statistical 90% confidence level, in which the systematic uncertainties are not included.
ApJ 758 (2012) 46:
Kruehler et al: The Optically Unbiased GRB Host (TOUGH) Survey. V. VLT/X-shooter Emission-line Redshifts for Swift GRBs at z ~ 2
reports a redshift of z=1.9591

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Jochen Greiner, last update: 24-Oct-2012 [Disclaimer]