Gamma-ray Burst 130626A

(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 26 Jun 13 10:51:22 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     559075,   Seg_Num: 0
GRB_RA:          273.130d {+18h 12m 31s} (J2000),
                 273.315d {+18h 13m 16s} (current),
                 272.443d {+18h 09m 46s} (1950)
GRB_DEC:          -9.531d {-09d 31' 50"} (J2000),
                  -9.527d {-09d 31' 35"} (current),
                  -9.544d {-09d 32' 39"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       493 [cnts]    Image_Peak=79 [image_cnts]
TRIGGER_DUR:     0.064 [sec] 
TRIGGER_INDEX:   10418     E_range: 25-100 keV
BKG_INTEN:       20377 [cnts]
BKG_TIME:        39053.28 SOD {10:50:53.28} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16469 TJD;   177 DOY;   13/06/26
GRB_TIME:        39063.52 SOD {10:51:03.52} UT
GRB_PHI:         -147.76 [deg]
GRB_THETA:        14.55 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     26.00 [sigma]
IMAGE_SIGNIF:    9.33 [sigma]
MERIT_PARAMS:     +1  +0  +0  -4  +2  +0  +0  +1 +97  +0 
SUN_POSTN:        95.45d {+06h 21m 47s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.03 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.83d {+21h 11m 19s}  -10.89d {-10d 53' 23"}
MOON_DIST:        43.79 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.99,  4.18 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      273.18, 13.87 [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 = 273.47,-4.20 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 26 Jun 13 10:52:50 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     559075,   Seg_Num: 0
GRB_RA:          273.3323d {+18h 13m 19.75s} (J2000),
                 273.5177d {+18h 14m 04.25s} (current),
                 272.6448d {+18h 10m 34.74s} (1950)
GRB_DEC:          -9.5863d {-09d 35' 10.6"} (J2000),
                  -9.5818d {-09d 34' 54.5"} (current),
                  -9.6008d {-09d 36' 02.9"} (1950)
GRB_ERROR:       5.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       2.04e-09 [erg/cm2/sec]
GRB_SIGNIF:      6.40 [sigma]
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39122.16 SOD {10:52:02.16} UT,   58.6 [sec] since BAT Trigger Time
TAM[0-3]:        327.65 237.21 261.59 243.44
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.12 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.84d {+21h 11m 22s}  -10.89d {-10d 53' 07"}
MOON_DIST:        43.60 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       20.04,  3.97 [deg] galactic lon,lat of the burst
ECL_COORDS:      273.38, 13.81 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 12.43 arcmin from the BAT position.  
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 .  
COMMENTS:        WARNING: The centroided position is more than 100 rows or columns from the center of the FOV.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 26 Jun 13 10:53:10 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     559075,   Seg_Num: 0
GRB_RA:          273.3323d {+18h 13m 19.7s} (J2000),
                 273.5177d {+18h 14m 04.2s} (current),
                 272.6448d {+18h 10m 34.7s} (1950)
GRB_DEC:          -9.5863d {-09d 35' 10.6"} (J2000),
                  -9.5818d {-09d 34' 54.5"} (current),
                  -9.6008d {-09d 36' 02.9"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       41 [cnts]
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39122.16 SOD {10:52:02.16} UT,   58.6 [sec] since BAT Trigger Time
CENTROID_X:      427.39,  raw= 427  [pixels]
CENTROID_Y:      18.41,  raw= 18  [pixels]
ROLL:            351.13 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -659.06
GRB_POS_XRT_Z:   291.59
IMAGE_URL:       sw00559075000msxps_rw.img
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.12 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.85d {+21h 11m 23s}  -10.88d {-10d 53' 04"}
MOON_DIST:        43.61 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       20.04,  3.97 [deg] galactic lon,lat of the burst
ECL_COORDS:      273.38, 13.81 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.  
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:     Wed 26 Jun 13 10:53:00 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     559075,   Seg_Num: 0
GRB_RA:          273.3323d {+18h 13m 19.7s} (J2000),
                 273.5177d {+18h 14m 04.2s} (current),
                 272.6448d {+18h 10m 34.7s} (1950)
GRB_DEC:          -9.5863d {-09d 35' 10.6"} (J2000),
                  -9.5818d {-09d 34' 54.5"} (current),
                  -9.6008d {-09d 36' 02.9"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       41 [cnts]
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39122.16 SOD {10:52:02.16} UT,   58.6 [sec] since BAT Trigger Time
CENTROID_X:      427.39,  raw= 427  [pixels]
CENTROID_Y:      18.41,  raw= 18  [pixels]
ROLL:            351.13 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -659.06
GRB_POS_XRT_Z:   291.59
IMAGE_URL:       sw00559075000msxps_rw.img
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.12 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.85d {+21h 11m 23s}  -10.89d {-10d 53' 05"}
MOON_DIST:        43.60 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       20.04,  3.97 [deg] galactic lon,lat of the burst
ECL_COORDS:      273.38, 13.81 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
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 .  
COMMENTS:        WARNING: The centroided position is more than 100 rows or columns from the center of the FOV.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 26 Jun 13 10:54:01 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.136d {+18h 12m 33s} (J2000)
POINT_DEC:        -9.534d {-09d 32' 01"} (J2000)
POINT_ROLL:      351.129d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39130.88 SOD {10:52:10.88} UT,   67.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.284
N_STARS:         45
X_OFFSET:        488 [pixels]
Y_OFFSET:        488 [pixels]
X_MAX:           1447 [pixels]
Y_MAX:           1447 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00559075000msufc0067.fits
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.86d {+21h 11m 25s}  -10.88d {-10d 52' 54"}
MOON_DIST:        43.81 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.99,  4.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.19, 13.87 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 26 Jun 13 10:54:41 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.136d {+18h 12m 33s} (J2000)
POINT_DEC:        -9.534d {-09d 32' 01"} (J2000)
POINT_ROLL:      351.129d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39130.88 SOD {10:52:10.88} UT,   67.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.284
N_STARS:         45
X_OFFSET:        488 [pixels]
Y_OFFSET:        488 [pixels]
X_MAX:           1447 [pixels]
Y_MAX:           1447 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00559075000msufc0067.fits
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.86d {+21h 11m 27s}  -10.88d {-10d 52' 47"}
MOON_DIST:        43.82 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.99,  4.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.19, 13.87 [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 26 Jun 13 10:55:27 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.136d {+18h 12m 33s} (J2000)
POINT_DEC:        -9.534d {-09d 32' 01"} (J2000)
ROLL:            351.129d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39130.88 SOD {10:52:10.88} UT,   67.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393936741
X_OFFSET:        923 [pixels]
Y_OFFSET:        1728 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1083
Y_GRB_POS:       2047
BINNING_INDEX:   1
IM_URL:          sw00559075000msuni0078.fits
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.87d {+21h 11m 29s}  -10.88d {-10d 52' 39"}
MOON_DIST:        43.83 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.99,  4.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.19, 13.87 [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 26 Jun 13 10:55:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.136d {+18h 12m 33s} (J2000)
POINT_DEC:        -9.534d {-09d 32' 01"} (J2000)
ROLL:            351.129d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  39130.88 SOD {10:52:10.88} UT,   67.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393936741
X_OFFSET:        923 [pixels]
Y_OFFSET:        1728 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1083
Y_GRB_POS:       2047
BINNING_INDEX:   1
IM_URL:          sw00559075000msuni0078.fits
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.87d {+21h 11m 30s}  -10.88d {-10d 52' 33"}
MOON_DIST:        43.83 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.99,  4.17 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.19, 13.87 [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 26 Jun 13 10:56:12 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     559075,   Seg_Num: 0
GRB_RA:          273.130d {+18h 12m 31s} (J2000),
                 273.315d {+18h 13m 16s} (current),
                 272.443d {+18h 09m 46s} (1950)
GRB_DEC:          -9.531d {-09d 31' 50"} (J2000),
                  -9.527d {-09d 31' 35"} (current),
                  -9.544d {-09d 32' 39"} (1950)
GRB_DATE:        16469 TJD;   177 DOY;   13/06/26
GRB_TIME:        39063.77 SOD {10:51:03.77} UT
TRIGGER_INDEX:   10418
GRB_PHI:         -147.76 [deg]
GRB_THETA:        14.55 [deg]
DELTA_TIME:      71.00 [sec]
TRIGGER_DUR:     0.064 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     26.00 [sigma]
IMAGE_SIGNIF:    9.33 [sigma]
LC_URL:          sw00559075000msb.lc
SUN_POSTN:        95.45d {+06h 21m 48s}  +23.34d {+23d 20' 33"}
SUN_DIST:        166.03 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      317.88d {+21h 11m 30s}  -10.88d {-10d 52' 31"}
MOON_DIST:        43.84 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.99,  4.18 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      273.18, 13.87 [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 = 273.47,-4.20 [deg].

GCN Circular #14931
M. De Pasquale (UCL-MSSL), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), V. D'Elia (ASDC), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (NASA/GSFC), F. E. Marshall (NASA/GSFC), S. R. Oates (UCL-MSSL) and K. L. Page (U Leicester) report on behalf of the Swift Team:
At 10:51:03 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130626A (trigger=559075). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 273.130, -9.531 which is
```
   RA(J2000)  =  18h 12m 31s
   Dec(J2000) = -09d 31' 50"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single spike with a duration of about 0.2 sec. The peak count rate was ~5000 counts/sec (15-350 keV), at ~0.0 sec after the trigger.
The XRT began observing the field at 10:52:02.1 UT, 58.6 seconds after the BAT trigger, but centroided on a cosmic ray. Because of the short on-target time, we do not have enough data to identify an afterglow.
UVOT took a finding chart exposure of 57 seconds with the White filter starting 67 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 none of the BAT error circle. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle. No correction has been made for the large, but uncertain extinction expected.
Burst Advocate for this burst is M. De Pasquale (m.depasquale AT ucl.ac.uk). 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 26 Jun 13 11:50:39 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.101d {+18h 12m 24s} (J2000)
POINT_DEC:        -9.545d {-09d 32' 40"} (J2000)
POINT_ROLL:      351.157d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  42467.53 SOD {11:47:47.53} UT,   3404.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.260
N_STARS:         84
X_OFFSET:        759 [pixels]
Y_OFFSET:        1088 [pixels]
X_MAX:           1718 [pixels]
Y_MAX:           2047 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00559075000msufc3404.fits
SUN_POSTN:        95.49d {+06h 21m 58s}  +23.34d {+23d 20' 28"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      318.41d {+21h 13m 39s}  -10.71d {-10d 42' 40"}
MOON_DIST:        44.40 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.96,  4.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.15, 13.86 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 26 Jun 13 11:51:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.101d {+18h 12m 24s} (J2000)
POINT_DEC:        -9.545d {-09d 32' 40"} (J2000)
POINT_ROLL:      351.157d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  42467.53 SOD {11:47:47.53} UT,   3404.0 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.260
N_STARS:         84
X_OFFSET:        759 [pixels]
Y_OFFSET:        1088 [pixels]
X_MAX:           1718 [pixels]
Y_MAX:           2047 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00559075000msufc3404.fits
SUN_POSTN:        95.49d {+06h 21m 58s}  +23.34d {+23d 20' 28"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      318.42d {+21h 13m 40s}  -10.71d {-10d 42' 35"}
MOON_DIST:        44.40 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.96,  4.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.15, 13.86 [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 26 Jun 13 11:52:20 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.101d {+18h 12m 24s} (J2000)
POINT_DEC:        -9.545d {-09d 32' 40"} (J2000)
ROLL:            351.157d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  42467.53 SOD {11:47:47.53} UT,   3404.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393940078
X_OFFSET:        1078 [pixels]
Y_OFFSET:        1407 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1238
Y_GRB_POS:       1567
BINNING_INDEX:   1
IM_URL:          sw00559075000msuni3415.fits
SUN_POSTN:        95.49d {+06h 21m 58s}  +23.34d {+23d 20' 27"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      318.43d {+21h 13m 43s}  -10.71d {-10d 42' 21"}
MOON_DIST:        44.42 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.96,  4.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.15, 13.86 [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 26 Jun 13 11:52:41 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     559075,   Seg_Num: 0
POINT_RA:        273.101d {+18h 12m 24s} (J2000)
POINT_DEC:        -9.545d {-09d 32' 40"} (J2000)
ROLL:            351.157d
IMG_START_DATE:  16469 TJD;   177 DOY;   13/06/26
IMG_START_TIME:  42467.53 SOD {11:47:47.53} UT,   3404.0 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393940078
X_OFFSET:        1078 [pixels]
Y_OFFSET:        1407 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1238
Y_GRB_POS:       1567
BINNING_INDEX:   1
IM_URL:          sw00559075000msuni3415.fits
SUN_POSTN:        95.49d {+06h 21m 58s}  +23.34d {+23d 20' 27"}
SUN_DIST:        166.04 [deg]   Sun_angle= -11.9 [hr] (East of Sun)
MOON_POSTN:      318.43d {+21h 13m 44s}  -10.71d {-10d 42' 18"}
MOON_DIST:        44.42 [deg]
MOON_ILLUM:      87 [%]
GAL_COORDS:       19.96,  4.19 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      273.15, 13.86 [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 #14937
K.L. Page (U. Leicester), S.R. Oates (UCL-MSSL) and M. De Pasquale (UCL-MSSL) report on behalf of the Swift-XRT and UVOT teams:
We have analysed 9.5 ks of Swift-XRT Photon Counting mode data collected for GRB 130626A, starting 111 s after the trigger (De Pasquale et al., GCN Circ. 14931). Of these data, only 10s were collected promptly following the trigger before Swift had to slew away because of a pointing constraint.
Within the onboard BAT error circle, there is a possible source detected, with a count rate (averaged between 111 s and 34.7 ks after the trigger) of (2.0 +0.5/-0.4) x 10^-3 count s^-1. The position of this source is RA, Dec = 273.14043, -9.50093, which is equivalent to:
```
RA (J2000):   18h 12m 33.70s
Dec (J2000): -09d 30' 03.3"
```
with an uncertainty of 5.5 arcsec (radius, 90% confidence). It is not possible to determine whether this candidate source is fading at present; a follow-up observation will be performed at a later date.
We do note, however, that there are other possible sources detected at a similar level in the XRT field of view, although outside the BAT error circle.
The Swift-UVOT began settled observations of the field of GRB 130626A 67 s after the BAT trigger (De Pasquale et al., GCN Circ. 14931). In the initial UVOT exposures, no optical afterglow is found within the BAT error circle or consistent with the candidate XRT position. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white (FC)          67          124          57          >20.5
white               67         5608          597         >22.0
v                 4384         5892          269         >19.8
b                 3768         5403          393         >21.1
u                 3563         5198          393         >20.7
w1                4794         4993          197         >20.1
```
The magnitudes in the table are not corrected for the heavy, but uncertain, Galactic extinction due to the reddening of E(B-V) = 1.45 in the direction of the burst (Schlegel et al. 1998).
This circular is an official product of the Swift-XRT and UVOT teams.
GCN Circular #14942
T. Sakamoto (AGU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), M. De Pasquale (UCL-MSSL), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), D. M. Palmer (LANL), G. Sato (ISAS), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-119 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130626A (trigger #559075) (De Pasquale, et al., GCN Circ. 14931). The BAT ground-calculated position is RA, Dec = 273.128, -9.525 deg which is
```
   RA(J2000)  =  18h 12m 30.6s
   Dec(J2000) = -09d 31' 29.9"
```
with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows a double short-peaked structure at T~ 0 sec. The second peak is slightly weaker than the first peak, and starts immediately at the end of the first peak. Each peak lasts ~ 0.08 sec. T90 (15-350 keV) is 0.16 +- 0.03 sec (estimated error including systematics).
The time-averaged spectrum from T-0.0 to T+0.2 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index -0.53 +- 1.39, and Epeak of 74.5 +- 25.6 keV (chi squared 54.40 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 5.2 +- 0.8 x 10^-08 erg/cm2 and the 1-sec peak flux measured from T-0.41 sec in the 15-150 keV band is 0.9 +- 0.2 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.30 +- 0.21 (chi squared 62.40 for 57 d.o.f.). 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/559075/BA/
GCN Circular #14943
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), Willia= m H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB) J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UCSC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC)= , Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes=FAs Gonz=E1lez (UN= AM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley= (GSFC) report:
We observed the field of the short-duration GRB 130626A (De Pasquale, et al., GCN 14931) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir beginnin= g 200 seconds after the BAT trigger, obtaining simultaneous 80 second exposures in the r' and i' bands.
We note that there is DSS source at the center of the corrected candidate Swift-XRT error circle (Page, et al., GCN 14937). In comparison with 2MA= SS and the RATIR zero points, we measure for this source:
```
  r'    18.69 +/- 0.07
  i'    17.40 +/- 0.05
```
No uncatalogued sources are detected within the XRT error circle. We derive the following 3-sigma limits:
```
  r' > 20.8
  i' > 20.5
```
These magnitudes are in the AB system and not corrected for Galactic extinction in the direction of the GRB.
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir.
GCN Circular #14944
WeiKang Zheng, Alexei V. Filippenko, Adam Morgan (UC Berkeley), and S. B. Cenko (NASA/Goddard Space Flight Center) report on behalf of the KAIT GRB team:
The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, responded to the short-duration GRB 130626A (De Pasquale et al., GCN 14931) starting at 10:52:40 UT, 97 s after the burst. Observations were performed with an automatic sequence in V, I, and clear filters (20 s exposure for each image). We detect the DSS source mentioned by Butler et al. (GCN 14943) in the corrected candidate XRT circle (Page et al., GCN 14937). We do not detect any new source in the XRT error circle. The estimated limiting magnitude in our first clear-band (close to R) image is about 18.7 (calibrated to USNO B1.0) at a midtime of 174 s after the burst.
GCN Circular #15004
K.L. Page (U. Leicester) and M. De Pasquale (UCL-MSSL) report on behalf of the Swift-XRT team:
In GCN Circ. 14937, Page, Oates & De Pasquale reported the Swift detection of a weak X-ray source within the BAT error circle of GRB 130626A. Follow-up observations of this source, obtained between 5.8 x 10^5 and 1.3 x 10^6 s after the trigger, show it is still detected, at a level of (1.3 +/- 0.3) x 10^-3 count s^-1, compared to the initial detection of (2.0 +0.5/-0.4) x 10^-3 count s^-1 (errors at the 1-sigma confidence level). Since the source has not faded significantly over this long time span, we do not believe it to be the X-ray afterglow of GRB 130626A.
The 90% upper limit for any other source within the BAT error circle is 8 x 10^-4 count s^-1, corresponding to a flux of 3 x 10^-14 erg cm^-2 s^-1, assuming a typical counts-to-observed-flux conversion factor of 4 x 10^-11 erg cm^-2 count^-1.
This circular is an official product of the Swift-XRT team.

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Jochen Greiner, last update: 12-Jul-2013 [Disclaimer]