Gamma-ray Burst 130625A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Jun 13 07:01:15 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     558982,   Seg_Num: 0
GRB_RA:          343.268d {+22h 53m 04s} (J2000),
                 343.283d {+22h 53m 08s} (current),
                 343.202d {+22h 52m 48s} (1950)
GRB_DEC:         +82.178d {+82d 10' 42"} (J2000),
                 +82.250d {+82d 15' 01"} (current),
                 +81.912d {+81d 54' 42"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5904 [cnts]    Image_Peak=238 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   262     E_range: 25-100 keV
BKG_INTEN:       57756 [cnts]
BKG_TIME:        25205.28 SOD {07:00:05.28} UT
BKG_DUR:         24 [sec]
GRB_DATE:        16468 TJD;   176 DOY;   13/06/25
GRB_TIME:        25239.52 SOD {07:00:39.52} UT
GRB_PHI:          13.94 [deg]
GRB_THETA:        28.58 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.53 [sigma]
IMAGE_SIGNIF:    8.47 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +2  -1  +0  +0 -34  +0 
SUN_POSTN:        94.24d {+06h 16m 58s}  +23.38d {+23d 22' 47"}
SUN_DIST:         69.58 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.83d {+20h 03m 20s}  -15.44d {-15d 26' 39"}
MOON_DIST:        99.67 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.82, 20.27 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       70.00, 67.60 [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 = 197.57,15.74 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Jun 13 07:02:23 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.407d {+22h 53m 38s} (J2000)
POINT_DEC:       +82.184d {+82d 11' 01"} (J2000)
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25336.76 SOD {07:02:16.76} UT,   97.2 [sec] since BAT Trigger Time
COUNTS:          15    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:     Tue 25 Jun 13 07:04:21 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     558982,   Seg_Num: 0
GRB_RA:          343.268d {+22h 53m 04s} (J2000),
                 343.283d {+22h 53m 08s} (current),
                 343.202d {+22h 52m 48s} (1950)
GRB_DEC:         +82.178d {+82d 10' 42"} (J2000),
                 +82.250d {+82d 15' 01"} (current),
                 +81.912d {+81d 54' 42"} (1950)
GRB_DATE:        16468 TJD;   176 DOY;   13/06/25
GRB_TIME:        25239.52 SOD {07:00:39.52} UT
TRIGGER_INDEX:   262
GRB_PHI:          13.94 [deg]
GRB_THETA:        28.58 [deg]
DELTA_TIME:      -63.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     10.53 [sigma]
IMAGE_SIGNIF:    8.47 [sigma]
LC_URL:          sw00558982000msb.lc
SUN_POSTN:        94.25d {+06h 16m 59s}  +23.38d {+23d 22' 47"}
SUN_DIST:         69.58 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.87d {+20h 03m 28s}  -15.44d {-15d 26' 13"}
MOON_DIST:        99.66 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.82, 20.27 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       70.00, 67.60 [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 = 197.57,15.74 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Jun 13 07:05:14 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.404d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.184d {+82d 11' 01"} (J2000)
POINT_ROLL:      66.282d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25341.99 SOD {07:02:21.99} UT,   102.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.848
N_STARS:         128
X_OFFSET:        345 [pixels]
Y_OFFSET:        620 [pixels]
X_MAX:           1304 [pixels]
Y_MAX:           1579 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00558982000msufc0102.fits
SUN_POSTN:        94.25d {+06h 16m 59s}  +23.38d {+23d 22' 47"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.87d {+20h 03m 30s}  -15.44d {-15d 26' 05"}
MOON_DIST:        99.67 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.84, 20.26 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Jun 13 07:05:36 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.404d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.184d {+82d 11' 01"} (J2000)
POINT_ROLL:      66.282d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25341.99 SOD {07:02:21.99} UT,   102.5 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.848
N_STARS:         128
X_OFFSET:        345 [pixels]
Y_OFFSET:        620 [pixels]
X_MAX:           1304 [pixels]
Y_MAX:           1579 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00558982000msufc0102.fits
SUN_POSTN:        94.25d {+06h 16m 59s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.88d {+20h 03m 31s}  -15.43d {-15d 26' 02"}
MOON_DIST:        99.67 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.84, 20.26 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:06:40 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.404d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.184d {+82d 11' 01"} (J2000)
ROLL:            66.282d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25341.99 SOD {07:02:21.99} UT,   102.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393836552
X_OFFSET:        664 [pixels]
Y_OFFSET:        939 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       824
Y_GRB_POS:       1099
BINNING_INDEX:   1
IM_URL:          sw00558982000msuni0113.fits
SUN_POSTN:        94.25d {+06h 16m 59s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.89d {+20h 03m 34s}  -15.43d {-15d 25' 53"}
MOON_DIST:        99.67 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.84, 20.26 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:06:44 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     558982,   Seg_Num: 0
GRB_RA:          343.2669d {+22h 53m 04.05s} (J2000),
                 343.2818d {+22h 53m 07.62s} (current),
                 343.2006d {+22h 52m 48.14s} (1950)
GRB_DEC:         +82.1734d {+82d 10' 24.2"} (J2000),
                 +82.2453d {+82d 14' 42.9"} (current),
                 +81.9068d {+81d 54' 24.5"} (1950)
GRB_ERROR:       4.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25364.00 SOD {07:02:44.00} UT,   124.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        94.25d {+06h 16m 59s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.58 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.89d {+20h 03m 34s}  -15.43d {-15d 25' 52"}
MOON_DIST:        99.65 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.82, 20.26 [deg] galactic lon,lat of the burst
ECL_COORDS:       69.99, 67.60 [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:     Tue 25 Jun 13 07:06:58 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.404d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.184d {+82d 11' 01"} (J2000)
ROLL:            66.282d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25341.99 SOD {07:02:21.99} UT,   102.5 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393836552
X_OFFSET:        664 [pixels]
Y_OFFSET:        939 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       824
Y_GRB_POS:       1099
BINNING_INDEX:   1
IM_URL:          sw00558982000msuni0113.fits
SUN_POSTN:        94.25d {+06h 16m 59s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.89d {+20h 03m 34s}  -15.43d {-15d 25' 50"}
MOON_DIST:        99.67 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.84, 20.26 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:13:09 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.406d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
POINT_ROLL:      66.283d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25554.78 SOD {07:05:54.78} UT,   315.3 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.543
N_STARS:         156
X_OFFSET:        105 [pixels]
Y_OFFSET:        380 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1819 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00558982000msufc0315.fits
SUN_POSTN:        94.25d {+06h 17m 01s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.96d {+20h 03m 50s}  -15.42d {-15d 24' 57"}
MOON_DIST:        99.65 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Jun 13 07:13:33 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.406d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
POINT_ROLL:      66.283d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25554.78 SOD {07:05:54.78} UT,   315.3 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.543
N_STARS:         156
X_OFFSET:        105 [pixels]
Y_OFFSET:        380 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1819 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00558982000msufc0315.fits
SUN_POSTN:        94.25d {+06h 17m 01s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.96d {+20h 03m 51s}  -15.42d {-15d 24' 53"}
MOON_DIST:        99.65 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:14:16 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.406d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
ROLL:            66.283d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25554.78 SOD {07:05:54.78} UT,   315.3 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     393836765
X_OFFSET:        664 [pixels]
Y_OFFSET:        939 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       824
Y_GRB_POS:       1099
BINNING_INDEX:   1
IM_URL:          sw00558982000msuni0326.fits
SUN_POSTN:        94.25d {+06h 17m 01s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.97d {+20h 03m 53s}  -15.41d {-15d 24' 47"}
MOON_DIST:        99.64 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:14:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.406d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
ROLL:            66.283d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25554.78 SOD {07:05:54.78} UT,   315.3 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     393836765
X_OFFSET:        664 [pixels]
Y_OFFSET:        939 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       824
Y_GRB_POS:       1099
BINNING_INDEX:   1
IM_URL:          sw00558982000msuni0326.fits
SUN_POSTN:        94.25d {+06h 17m 01s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.97d {+20h 03m 53s}  -15.41d {-15d 24' 45"}
MOON_DIST:        99.64 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:14:01 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     558982,   Seg_Num: 0
GRB_RA:          343.2798d {+22h 53m 07.15s} (J2000),
                 343.2948d {+22h 53m 10.74s} (current),
                 343.2131d {+22h 52m 51.13s} (1950)
GRB_DEC:         +82.1734d {+82d 10' 24.2"} (J2000),
                 +82.2453d {+82d 14' 43.0"} (current),
                 +81.9068d {+81d 54' 24.5"} (1950)
GRB_ERROR:       2.6 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  25364.00 SOD {07:02:44.00} UT,   124.5 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        94.25d {+06h 17m 01s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.58 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      300.97d {+20h 03m 52s}  -15.41d {-15d 24' 49"}
MOON_DIST:        99.62 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.82, 20.26 [deg] galactic lon,lat of the burst
ECL_COORDS:       69.99, 67.60 [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 Circular #14923
D. Grupe (PSU), V. D'Elia (ASDC), P. A. Evans (U Leicester), A. Y. Lien (NASA/GSFC/ORAU) and K. L. Page (U Leicester) report on behalf of the Swift Team:
At 07:00:39 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 130625A (trigger=558982). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 343.268, +82.178 which is
```
   RA(J2000) = 22h 53m 04s
   Dec(J2000) = +82d 10' 42"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peak structure with a duration of about 30 sec. The peak count rate was ~1648 counts/sec (15-350 keV), at ~1 sec after the trigger.
The XRT began observing the field at 07:02:16.7 UT, 97.2 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source with an enhanced position: RA, Dec 343.2798, 82.1734 which is equivalent to:
```
   RA(J2000)  = 22h 53m 07.15s
   Dec(J2000) = +82d 10' 24.1"
```
with an uncertainty of 2.6 arcseconds (radius, 90% containment). This location is 17 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.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (1.06 x 10^21 cm^-2, Kalberla et al. 2005), with an excess column of 2.8 (+2.84/-2.37) x 10^21 cm^-2 (90% confidence).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 102 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 0.22.
Burst Advocate for this burst is D. Grupe (dxg35 AT psu.edu). 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:     Tue 25 Jun 13 07:18:44 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.405d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
POINT_ROLL:      66.284d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  26110.76 SOD {07:15:10.76} UT,   871.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.867
N_STARS:         190
X_OFFSET:        105 [pixels]
Y_OFFSET:        380 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1819 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00558982000msufc0871.fits
SUN_POSTN:        94.26d {+06h 17m 01s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      301.02d {+20h 04m 04s}  -15.40d {-15d 24' 09"}
MOON_DIST:        99.63 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Tue 25 Jun 13 07:19:11 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.405d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
POINT_ROLL:      66.284d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  26110.76 SOD {07:15:10.76} UT,   871.2 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.867
N_STARS:         190
X_OFFSET:        105 [pixels]
Y_OFFSET:        380 [pixels]
X_MAX:           1544 [pixels]
Y_MAX:           1819 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    6
SL_URL:          sw00558982000msufc0871.fits
SUN_POSTN:        94.26d {+06h 17m 02s}  +23.38d {+23d 22' 46"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      301.02d {+20h 04m 05s}  -15.40d {-15d 24' 05"}
MOON_DIST:        99.63 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:20:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.405d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
ROLL:            66.284d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  26110.76 SOD {07:15:10.76} UT,   871.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393837321
X_OFFSET:        664 [pixels]
Y_OFFSET:        939 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       824
Y_GRB_POS:       1099
BINNING_INDEX:   1
IM_URL:          sw00558982000msuni0882.fits
SUN_POSTN:        94.26d {+06h 17m 02s}  +23.38d {+23d 22' 45"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      301.03d {+20h 04m 08s}  -15.40d {-15d 23' 54"}
MOON_DIST:        99.62 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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:     Tue 25 Jun 13 07:20:08 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     558982,   Seg_Num: 0
POINT_RA:        343.405d {+22h 53m 37s} (J2000)
POINT_DEC:       +82.186d {+82d 11' 09"} (J2000)
ROLL:            66.284d
IMG_START_DATE:  16468 TJD;   176 DOY;   13/06/25
IMG_START_TIME:  26110.76 SOD {07:15:10.76} UT,   871.2 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     393837321
X_OFFSET:        664 [pixels]
Y_OFFSET:        939 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       824
Y_GRB_POS:       1099
BINNING_INDEX:   1
IM_URL:          sw00558982000msuni0882.fits
SUN_POSTN:        94.26d {+06h 17m 02s}  +23.38d {+23d 22' 45"}
SUN_DIST:         69.56 [deg]   Sun_angle= 7.4 [hr] (West of Sun)
MOON_POSTN:      301.03d {+20h 04m 08s}  -15.40d {-15d 23' 57"}
MOON_DIST:        99.62 [deg]
MOON_ILLUM:      95 [%]
GAL_COORDS:      118.85, 20.27 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       70.02, 67.58 [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 Circular #14924
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1226 s of XRT Photon Counting mode data and 1 UVOT images for GRB 130625A, 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 = 343.27789, +82.17438 which is equivalent to:
```
RA (J2000): 22h 53m 6.69s
Dec (J2000): +82d 10' 27.8"
```
with an uncertainty of 2.2 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 #14925
D. M. Palmer (LANL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), D. Grupe (PSU), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (GSFC), 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-60 to T+243 sec from the recent telemetry downlink, we report further analysis of BAT GRB 130625A (trigger #558982) (Grupe, et al., GCN Circ. 14923). The BAT ground-calculated position is RA, Dec = 343.336, 82.171 deg, which is
```
   RA(J2000)  =  22h 53m 20.6s 
   Dec(J2000) = +82d 10' 17.1" 
```
with an uncertainty of 1.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 75%.
The mask-weighted light curve shows two overlapping peaks starting at ~T-25sec, peaking at ~T+3 sec, and ending at ~T+60 sec. T90 (15-350 keV) is 38.1 +- 4.9 sec (estimated error including systematics).
The time-averaged spectrum from T-28.17 to T+18.50 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.37 +- 0.09. The fluence in the 15-150 keV band is 1.8 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+2.54 sec in the 15-150 keV band is 1.2 +- 0.2 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/558982/BA/
GCN Circular #14927
D. Xu (DARK/NBI), A. Esamdin, L. Ma, C.-H. Bai, G.-J. Feng (XAO) report:
We observed the field of GRB 130625A (Grupe et al., GCN 14923) using the 1m telescope located at Mt. Nanshan, Xinjiang Astronomical Observatory, China. We obtained 6x300s R-band frames with a mean time of 15:40:08 UT on 2013-06-25, (i.e., 8.658 hr after the burst).
No optical source is detected within the enhanced XRT error circle (Goad et al., GCN 14924) in the stacked image, down to a limit magnitude of R=21.0 mag, calibrated with the USNO B1 catalog.
GCN Circular #14928
J. S. Linevsky (PSU/CBHS), M. H. Siegel (PSU), and D. Grupe (PSU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 130625A 102 s after the BAT trigger (Grupe et al., GCN Circ. 14923). No optical afterglow consistent with the enhanced XRT position (Grupe et al. GCN Circ. 14924) 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    102      252       147    >20.96  
white       595     1890       283    >21.34 
v           644     1940       155    >19.34   
b           570     1866       136    >20.21  
u_FC        315      565       245    >20.26  
u           315     2003       617    >20.81 
uvw1        694     1989       136    >19.60     
uvm2        844     6816       332    >20.04  
uvw2        620     1916       155    >19.79   
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.22 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #14929
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov, A.Gabovich Blagoveschensk Educational State University, Blagoveschensk
E. Gorbovskoy, V. Lipunov, D.Denisenko, V.Kornilov, D.Kuvshinov, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov Sternberg Astronomical Institute, Lomonosov Moscow State University
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University, Irkutsk
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Senik Kislovodsk Solar Station of the Pulkovo Observatory
V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka
Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Blagoveschensk was pointed to the GRB130625A 23177 sec s after notice time and 23214 sec after GRB time at 2013-06-25 13:27:34.231 UT. On our first (180s exposure) set we haven`t found optical transient within Swift error-box (D. Grupe et al. GCN 14923). The 5-sigma upper limit has been about 17.5 mag
On coadd images images we received the following limits
```
  T_start  T_finish  T_mid      t_mid-t_grb  Exptime   Filter   Limit  Coadd
---------------------------------------------------------------------------
13:27:34  14:17:44  13:52:39   24719 s      2700 s       R      19.0     15
13:31:38  14:17:44  13:54:41   24841 s      2520 s       W      19.5     14
```
The message may be cited.
GCN Circular #14930
J.A. Kennea (PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), C. Pagani (U. Leicester), V. D'Elia (ASDC), A. Maselli (INAF-IASFPA), V. Mangano (INAF-IASFPA) and D. Grupe report on behalf of the Swift-XRT team:
We have analysed 2.8 ks of XRT data for GRB 130625A (Grupe et al. GCN Circ. 14923), from 100 s to 25.1 ks after the BAT trigger. The data comprise 34 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 14924).
The light curve can be modelled with a power-law decay with a decay index of alpha=1.70 (+0.21, -0.23).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.2 (+0.7, -0.6). The best-fitting absorption column is 4.8 (+3.3, -2.3) x 10^21 cm^-2, in excess of the Galactic value of 1.1 x 10^21 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.1 x 10^-11 (8.3 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     4.8 (+3.3, -2.3) x 10^21 cm^-2
Galactic foreground: 1.1 x 10^21 cm^-2
Excess significance: 2.6 sigma
Photon index:	     2.2 (+0.7, -0.6)
```
If the light curve continues to decay with a power-law decay index of 1.70, the count rate at T+24 hours will be 5.3 x 10^-5 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.2 x 10^-15 (4.4 x 10^-15) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00558982.
This circular is an official product of the Swift-XRT team.
GCN Report 440.1
GCN_Report 440.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_440_1.pdf by D. Grupe at PSU titled: "Swift Observations of GRB 130625A"

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Jochen Greiner, last update: 26-Jun-2013 [Disclaimer]