Gamma-ray Burst 140730A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:44:26 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     607742,   Seg_Num: 0
GRB_RA:           56.431d {+03h 45m 43s} (J2000),
                  56.462d {+03h 45m 51s} (current),
                  56.326d {+03h 45m 18s} (1950)
GRB_DEC:         -66.539d {-66d 32' 19"} (J2000),
                 -66.494d {-66d 29' 37"} (current),
                 -66.693d {-66d 41' 34"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       9583 [cnts]    Image_Peak=275 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   443     E_range: 15-50 keV
BKG_INTEN:       97540 [cnts]
BKG_TIME:        70995.66 SOD {19:43:15.66} UT
BKG_DUR:         24 [sec]
GRB_DATE:        16868 TJD;   211 DOY;   14/07/30
GRB_TIME:        71031.31 SOD {19:43:51.31} UT
GRB_PHI:         -74.28 [deg]
GRB_THETA:         2.67 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.78 [sigma]
IMAGE_SIGNIF:    7.36 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +1  -3  +0  +0 +18  +0 
SUN_POSTN:       129.97d {+08h 39m 54s}  +18.38d {+18d 22' 38"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.69d {+11h 18m 47s}   +1.54d {+01d 32' 26"}
MOON_DIST:       100.48 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      344.62,-76.80 [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 = 222.74,-4.73 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:45:10 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.433d {+03h 45m 44s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 27"} (J2000)
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71095.14 SOD {19:44:55.14} UT,   63.8 [sec] since BAT Trigger Time
COUNTS:          11    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:47:31 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     607742,   Seg_Num: 0
GRB_RA:           56.431d {+03h 45m 43s} (J2000),
                  56.462d {+03h 45m 51s} (current),
                  56.326d {+03h 45m 18s} (1950)
GRB_DEC:         -66.539d {-66d 32' 19"} (J2000),
                 -66.494d {-66d 29' 37"} (current),
                 -66.693d {-66d 41' 34"} (1950)
GRB_DATE:        16868 TJD;   211 DOY;   14/07/30
GRB_TIME:        71031.31 SOD {19:43:51.31} UT
TRIGGER_INDEX:   443
GRB_PHI:         -74.28 [deg]
GRB_THETA:         2.67 [deg]
DELTA_TIME:      -43.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     13.78 [sigma]
IMAGE_SIGNIF:    7.36 [sigma]
LC_URL:          sw00607742000msb.lc
SUN_POSTN:       129.98d {+08h 39m 54s}  +18.38d {+18d 22' 36"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.72d {+11h 18m 52s}   +1.53d {+01d 31' 57"}
MOON_DIST:       100.48 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      344.62,-76.80 [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 = 222.74,-4.73 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:48:59 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     607742,   Seg_Num: 0
GRB_RA:           56.3957d {+03h 45m 34.96s} (J2000),
                  56.4268d {+03h 45m 42.43s} (current),
                  56.2913d {+03h 45m 09.90s} (1950)
GRB_DEC:         -66.5459d {-66d 32' 45.2"} (J2000),
                 -66.5010d {-66d 30' 03.6"} (current),
                 -66.7002d {-66d 42' 00.7"} (1950)
GRB_ERROR:       3.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71118.00 SOD {19:45:18.00} UT,   86.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       129.98d {+08h 39m 54s}  +18.38d {+18d 22' 35"}
SUN_DIST:        100.48 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.73d {+11h 18m 55s}   +1.53d {+01d 31' 43"}
MOON_DIST:       100.49 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.12,-42.46 [deg] galactic lon,lat of the burst
ECL_COORDS:      344.58,-76.79 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:49:21 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.434d {+03h 45m 44s} (J2000)
POINT_DEC:       -66.540d {-66d 32' 25"} (J2000)
POINT_ROLL:      67.745d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71099.51 SOD {19:44:59.51} UT,   68.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.506
N_STARS:         118
X_OFFSET:        483 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1442 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00607742000msufc0068.fits
SUN_POSTN:       129.98d {+08h 39m 55s}  +18.38d {+18d 22' 35"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.73d {+11h 18m 56s}   +1.53d {+01d 31' 39"}
MOON_DIST:       100.48 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.62,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:49:49 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.434d {+03h 45m 44s} (J2000)
POINT_DEC:       -66.540d {-66d 32' 25"} (J2000)
POINT_ROLL:      67.745d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71099.51 SOD {19:44:59.51} UT,   68.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.506
N_STARS:         118
X_OFFSET:        483 [pixels]
Y_OFFSET:        535 [pixels]
X_MAX:           1442 [pixels]
Y_MAX:           1494 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00607742000msufc0068.fits
SUN_POSTN:       129.98d {+08h 39m 55s}  +18.38d {+18d 22' 35"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.74d {+11h 18m 57s}   +1.53d {+01d 31' 35"}
MOON_DIST:       100.48 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.62,-76.80 [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:     Wed 30 Jul 14 19:51:00 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.434d {+03h 45m 44s} (J2000)
POINT_DEC:       -66.540d {-66d 32' 25"} (J2000)
ROLL:            67.745d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71099.51 SOD {19:44:59.51} UT,   68.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     428442311
X_OFFSET:        802 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       962
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00607742000msuni0081.fits
SUN_POSTN:       129.98d {+08h 39m 55s}  +18.38d {+18d 22' 34"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.75d {+11h 18m 59s}   +1.52d {+01d 31' 24"}
MOON_DIST:       100.48 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.62,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 19:51:11 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.434d {+03h 45m 44s} (J2000)
POINT_DEC:       -66.540d {-66d 32' 25"} (J2000)
ROLL:            67.745d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71099.51 SOD {19:44:59.51} UT,   68.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     428442311
X_OFFSET:        802 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       962
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00607742000msuni0081.fits
SUN_POSTN:       129.98d {+08h 39m 55s}  +18.38d {+18d 22' 34"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.75d {+11h 18m 59s}   +1.52d {+01d 31' 22"}
MOON_DIST:       100.48 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.62,-76.80 [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 #16642
C. B. Markwardt (NASA/GSFC), M. G. Bernardini (INAF-OAB), P. D'Avanzo (INAF-OAB), N. Gehrels (NASA/GSFC), F. E. Marshall (NASA/GSFC), A. Melandri (INAF-OAB) and D. M. Palmer (LANL) report on behalf of the Swift Team:
At 19:43:51 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140730A (trigger=607742). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 56.431, -66.539 which is
```
   RA(J2000) = 03h 45m 43s
   Dec(J2000) = -66d 32' 19"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 5 sec (FWHM ~2-3 sec) The peak count rate was ~1800 counts/sec (15-350 keV), at ~1 sec after the trigger.
The XRT began observing the field at 19:44:55.1 UT, 63.8 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 56.39573, -66.54597 which is equivalent to:
```
   RA(J2000)  = 03h 45m 34.98s
   Dec(J2000) = -66d 32' 45.5"
```
with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 56 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper. We cannot determine whether the source is fading at the present time.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 7.59 x 10^20 cm^-2 (Willingale et al. 2013).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 68 seconds after the BAT trigger. No credible 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 19.6 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 the expected extinction corresponding to E(B-V) of 0.09.
Burst Advocate for this burst is C. B. Markwardt (Craig.Markwardt AT 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 30 Jul 14 20:12:05 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.427d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
POINT_ROLL:      67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71311.58 SOD {19:48:31.58} UT,   280.3 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        2.486
N_STARS:         135
X_OFFSET:        243 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1682 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00607742000msufc0280.fits
SUN_POSTN:       129.99d {+08h 39m 58s}  +18.37d {+18d 22' 21"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.91d {+11h 19m 38s}   +1.47d {+01d 28' 01"}
MOON_DIST:       100.49 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 20:12:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.427d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
POINT_ROLL:      67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71311.58 SOD {19:48:31.58} UT,   280.3 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        2.486
N_STARS:         135
X_OFFSET:        243 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1682 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00607742000msufc0280.fits
SUN_POSTN:       129.99d {+08h 39m 58s}  +18.37d {+18d 22' 21"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.91d {+11h 19m 39s}   +1.47d {+01d 27' 58"}
MOON_DIST:       100.49 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 20:12:55 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     607742,   Seg_Num: 0
GRB_RA:           56.3982d {+03h 45m 35.56s} (J2000),
                  56.4293d {+03h 45m 43.03s} (current),
                  56.2938d {+03h 45m 10.50s} (1950)
GRB_DEC:         -66.5455d {-66d 32' 43.8"} (J2000),
                 -66.5006d {-66d 30' 02.1"} (current),
                 -66.6998d {-66d 41' 59.2"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71118.00 SOD {19:45:18.00} UT,   86.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       129.99d {+08h 39m 58s}  +18.37d {+18d 22' 21"}
SUN_DIST:        100.49 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.92d {+11h 19m 40s}   +1.46d {+01d 27' 53"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.11,-42.46 [deg] galactic lon,lat of the burst
ECL_COORDS:      344.58,-76.79 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 20:13:37 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.427d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
ROLL:            67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71311.58 SOD {19:48:31.58} UT,   280.3 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     428442523
X_OFFSET:        802 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       962
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00607742000msuni0293.fits
SUN_POSTN:       129.99d {+08h 39m 58s}  +18.37d {+18d 22' 20"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.92d {+11h 19m 41s}   +1.46d {+01d 27' 47"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 20:13:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.427d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
ROLL:            67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71311.58 SOD {19:48:31.58} UT,   280.3 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     428442523
X_OFFSET:        802 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       962
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00607742000msuni0293.fits
SUN_POSTN:       129.99d {+08h 39m 58s}  +18.37d {+18d 22' 20"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.92d {+11h 19m 42s}   +1.46d {+01d 27' 45"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [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 30 Jul 14 20:14:12 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.428d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
POINT_ROLL:      67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71890.00 SOD {19:58:10.00} UT,   858.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.650
N_STARS:         88
X_OFFSET:        243 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1682 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00607742000msufc0858.fits
SUN_POSTN:       129.99d {+08h 39m 59s}  +18.37d {+18d 22' 20"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.93d {+11h 19m 42s}   +1.46d {+01d 27' 41"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [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:     Wed 30 Jul 14 20:14:03 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.428d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
POINT_ROLL:      67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71890.00 SOD {19:58:10.00} UT,   858.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.650
N_STARS:         88
X_OFFSET:        243 [pixels]
Y_OFFSET:        295 [pixels]
X_MAX:           1682 [pixels]
Y_MAX:           1734 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00607742000msufc0858.fits
SUN_POSTN:       129.99d {+08h 39m 59s}  +18.37d {+18d 22' 20"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.93d {+11h 19m 42s}   +1.46d {+01d 27' 43"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 20:15:16 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.428d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
ROLL:            67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71890.00 SOD {19:58:10.00} UT,   858.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     428443102
X_OFFSET:        802 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       962
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00607742000msuni0871.fits
SUN_POSTN:       129.99d {+08h 39m 59s}  +18.37d {+18d 22' 19"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.94d {+11h 19m 44s}   +1.46d {+01d 27' 31"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 30 Jul 14 20:15:31 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     607742,   Seg_Num: 0
POINT_RA:         56.428d {+03h 45m 43s} (J2000)
POINT_DEC:       -66.541d {-66d 32' 28"} (J2000)
ROLL:            67.753d
IMG_START_DATE:  16868 TJD;   211 DOY;   14/07/30
IMG_START_TIME:  71890.00 SOD {19:58:10.00} UT,   858.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     428443102
X_OFFSET:        802 [pixels]
Y_OFFSET:        854 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       962
Y_GRB_POS:       1014
BINNING_INDEX:   1
IM_URL:          sw00607742000msuni0871.fits
SUN_POSTN:       129.99d {+08h 39m 59s}  +18.37d {+18d 22' 19"}
SUN_DIST:        100.47 [deg]   Sun_angle= 4.9 [hr] (West of Sun)
MOON_POSTN:      169.94d {+11h 19m 45s}   +1.46d {+01d 27' 29"}
MOON_DIST:       100.50 [deg]
MOON_ILLUM:      13 [%]
GAL_COORDS:      281.10,-42.45 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      344.61,-76.80 [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 #16643
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Using promptly downlinked XRT event data for GRB 140730A, we find an enhanced XRT position of the afterglow: RA, Dec: 56.3982, -66.5456 which is equivalent to:
```
   RA (J2000)  = 03 45 35.56
   Dec (J2000) = -66 32 44.0
```
with an uncertainty of 2.3 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/607742.
Position enhancement is is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular is an official product of the Swift-XRT team.
GCN Circular #16644
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 2499 s of XRT Photon Counting mode data and 5 UVOT images for GRB 140730A, 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 = 56.39911, -66.54516 which is equivalent to:
```
RA (J2000): 03h 45m 35.79s
Dec (J2000): -66d 32' 42.6"
```
with an uncertainty of 1.8 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #16645
M. H. Siegel (PSU) and C. B. Markwardt (NASA/GSFC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140730A 68 s after the BAT trigger (Markwardt et al., GCN Circ. 16642). No optical afterglow consistent with the XRT position (Evans GCN Circ. 16643) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC            68          218          147         >21.2
u_FC               280          530          246         >19.6
white               68         6182          396         >21.3
v                  784         6593          413         >19.5
b                  709         5978          216         >20.3
u                  280         5772          462         >20.0
w1                 660         5568          236         >21.1
m2                5162         6798          393         >20.4
w2                4753         6388          393         >20.6
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.09 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #16646
A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), B.P. Gompertz (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), M. de Pasquale (INAF-IASFPA), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU) and C.B. Markwardt report on behalf of the Swift-XRT team:
We have analysed 6.1 ks of XRT data for GRB 140730A (Markwardt et al. GCN Circ. 16642), from 50 s to 39.5 ks after the BAT trigger. The data comprise 17 s in Windowed Timing (WT) mode (the first 7 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN Circ. 16643).
The light curve can be modelled with an initial power-law decay with an index of alpha=2.4 (+0.4, -0.3), followed by a break at T+234 s to an alpha of 0.57 (+/-0.07).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.92 (+0.25, -0.23). The best-fitting absorption column is 3.0 (+1.1, -1.0) x 10^21 cm^-2, in excess of the Galactic value of 7.6 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.9 x 10^-11 (5.5 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     3.0 (+1.1, -1.0) x 10^21 cm^-2
Galactic foreground: 7.6 x 10^20 cm^-2
Excess significance: 3.8 sigma
Photon index:	     1.92 (+0.25, -0.23)
```
If the light curve continues to decay with a power-law decay index of 0.57, the count rate at T+24 hours will be 10.0 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.9 x 10^-13 (5.5 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00607742.
This circular is an official product of the Swift-XRT team.
GCN Circular #16647
S. Dichiara, C. Guidorzi (U. Ferrara), C.G. Mundell (LJMU), A. Gomboc (U. Ljubljana) on behalf of a large collaboration report:
One of the Las Cumbres Observatory 1-m telescopes in Sutherland (South Africa) began observing Swift GRB 140730A (Markwardt et al. GCN Circ 16642) on July 31 at 01:16:34 UT, i.e. ~5.5 hours after the BAT trigger, with the r' and i' filters.
Within the enhanced XRT error circle (Goad et al. GCN Circ. 16644) we found nothing down to the following limit:
```
Mid time from  Total Exp   Filter    Magnitude
trigger (hr)   (s)
-------------------------------------------------
5.64           120x5       r'        > 20.0
5.83           120x5       i'        > 19.8
-------------------------------------------------
```
Magnitudes are calibrated against nearby USNO-B1 stars.
GCN Circular #16652
W. H. Baumgartner (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+902 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140730A (trigger #607742) (Markwardt, et al., GCN Circ. 16642). The BAT ground-calculated position is RA, Dec = 56.350, -66.580 deg which is
```
  RA(J2000)  =  03h 45m 24.0s
  Dec(J2000) = -66d 34' 48.7"
```
with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows several overlapping pulses. The first major pulse starts at ~T-14s, peaks at ~T-13 s, and ends at ~T-4 s. The second major pulse starts at ~T+0 s, peaks at ~T+1s, and ends at ~T+5 s. The whole burst structure ends at ~T+41 s. T90 (15-350 keV) is 41.3 +- 3.7 sec (estimated error including systematics).
The time-averaged spectrum from T-13.5 to T+29.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.50 +- 0.32. The fluence in the 15-150 keV band is 2.8 +- 0.5 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+1.17 sec in the 15-150 keV band is 0.5 +- 0.1 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/607742/BA/
GCN Circular #16664
D. A. Kann (TLS Tautenburg), C. Delvaux and Jochen Greiner (both MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 140730A (Swift trigger 607742; Markwardt et al., GCN #16642) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPG telescope at ESO La Silla Observatory (Chile).
Observations started at 08:36 UT on 2014-08-02, 2.52 days after the GRB trigger. They were performed at an average seeing of 1".2 and at an average airmass of 1.4.
Based on images with exposure times of 2250 s in g'r'i'z' and 1200 s in JHK, we do not detect a source within the Swift-XRT error circle reported by Goad et al. (GCN #16644) down to to the following 3-sigma AB magnitudes:
```
g' > 25.3 mag,
r' > 25.4 mag,
i' > 24.7 mag,
z' > 24.4 mag,
J > 21.0 mag,
H > 20.3 mag, and
K > 18.0 mag.
```
The given limits are derived based on calibrating the images against the GROND zeropoints and 2MASS field stars and are not corrected for the Galactic foreground extinction corresponding to a reddening of E_(B-V)= 0.09 in the direction of the burst (Schlegel et al. 1998).

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Jochen Greiner, last update: 03-Aug-2014 [Disclaimer]