Gamma-ray Burst 140703A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:38:01 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     603243,   Seg_Num: 0
GRB_RA:           12.990d {+00h 51m 58s} (J2000),
                  13.194d {+00h 52m 47s} (current),
                  12.289d {+00h 49m 09s} (1950)
GRB_DEC:         +45.095d {+45d 05' 41"} (J2000),
                 +45.173d {+45d 10' 24"} (current),
                 +44.823d {+44d 49' 23"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       5480 [cnts]    Image_Peak=136 [image_cnts]
TRIGGER_DUR:     2.048 [sec] 
TRIGGER_INDEX:   486     E_range: 50-350 keV
BKG_INTEN:       48654 [cnts]
BKG_TIME:        2203.78 SOD {00:36:43.78} UT
BKG_DUR:         24 [sec]
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2237.06 SOD {00:37:17.06} UT
GRB_PHI:         -169.25 [deg]
GRB_THETA:        54.62 [deg]
SOLN_STATUS:     0x20000003
RATE_SIGNIF:     17.86 [sigma]
IMAGE_SIGNIF:    7.54 [sigma]
MERIT_PARAMS:     +1  +0  +0  +1  +3  -2  +0  +0 -28  +0 
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         73.12 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.48d {+10h 53m 56s}   +3.44d {+03d 26' 28"}
MOON_DIST:       124.65 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.03,-17.78 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       31.85, 35.92 [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 = 144.42,-11.36 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(10.0<100sec) coincident with the FERMI_GBM event (trignum=426040630).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:37:31 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      49
TRIGGER_NUM:     426040630
GRB_RA:          105.383d {+07h 01m 32s} (J2000),
                 118.433d {+07h 53m 44s} (current),
                  58.297d {+03h 53m 11s} (1950)
GRB_DEC:         +89.683d {+89d 40' 60"} (J2000),
                 +89.652d {+89d 39' 09"} (current),
                 +89.639d {+89d 38' 19"} (1950)
GRB_ERROR:       32.42 [deg radius, statistical plus systematic]
GRB_INTEN:       55 [cnts/sec]
DATA_SIGNIF:     5.20 [sigma]
INTEG_TIME:      2.048 [sec]
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2227.19 SOD {00:37:07.19} UT
GRB_PHI:          57.98 [deg]
GRB_THETA:        45.00 [deg]
DATA_TIME_SCALE: 2.0480 [sec]
HARD_RATIO:      1.09
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      95%  GRB
2nd_MOST_LIKELY:   3%  Solar Flare
DETECTORS:       0,1,1, 0,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         66.69 [deg]   Sun_angle= -1.1 [hr] (East of Sun)
MOON_POSTN:      163.48d {+10h 53m 55s}   +3.44d {+03d 26' 32"}
MOON_DIST:        86.31 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.29, 27.15 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       90.21, 66.26 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140703026/quicklook/glg_lc_medres34_bn140703026.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 31.20,1.77 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:37:41 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      58
TRIGGER_NUM:     426040630
GRB_RA:          359.117d {+23h 56m 28s} (J2000),
                 359.301d {+23h 57m 12s} (current),
                 358.486d {+23h 53m 57s} (1950)
GRB_DEC:         +58.950d {+58d 57' 00"} (J2000),
                 +59.031d {+59d 01' 51"} (current),
                 +58.672d {+58d 40' 18"} (1950)
GRB_ERROR:       13.67 [deg radius, statistical plus systematic]
GRB_INTEN:       105 [cnts/sec]
DATA_SIGNIF:     12.00 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2227.19 SOD {00:37:07.19} UT
GRB_PHI:          40.00 [deg]
GRB_THETA:        15.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.68
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      92%  GRB
2nd_MOST_LIKELY:   3%  Generic Transient
DETECTORS:       0,1,1, 0,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         76.67 [deg]   Sun_angle= 6.8 [hr] (West of Sun)
MOON_POSTN:      163.48d {+10h 53m 55s}   +3.44d {+03d 26' 31"}
MOON_DIST:       116.28 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      115.88, -3.17 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       32.89, 52.11 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140703026/quicklook/glg_lc_medres34_bn140703026.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 31.20,1.77 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:37:51 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      68
TRIGGER_NUM:     426040630
GRB_RA:            9.983d {+00h 39m 56s} (J2000),
                  10.181d {+00h 40m 44s} (current),
                   9.303d {+00h 37m 13s} (1950)
GRB_DEC:         +40.817d {+40d 49' 00"} (J2000),
                 +40.896d {+40d 53' 46"} (current),
                 +40.542d {+40d 32' 32"} (1950)
GRB_ERROR:       9.95 [deg radius, statistical plus systematic]
GRB_INTEN:       158 [cnts/sec]
DATA_SIGNIF:     17.90 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2227.19 SOD {00:37:07.19} UT
GRB_PHI:         320.00 [deg]
GRB_THETA:        15.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.82
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      96%  GRB
2nd_MOST_LIKELY:   1%  Generic Transient
DETECTORS:       0,1,1, 0,0,0, 0,0,0, 0,0,0, 0,0,
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         76.50 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
MOON_POSTN:      163.48d {+10h 53m 56s}   +3.44d {+03d 26' 29"}
MOON_DIST:       129.40 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      120.58,-22.00 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       27.04, 33.20 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140703026/quicklook/glg_lc_medres34_bn140703026.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 31.20,1.77 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=0).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:37:58 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      67
TRIGGER_NUM:     426040630
GRB_RA:           10.010d {+00h 40m 02s} (J2000),
                  10.210d {+00h 40m 50s} (current),
                   9.323d {+00h 37m 18s} (1950)
GRB_DEC:         +44.710d {+44d 42' 36"} (J2000),
                 +44.789d {+44d 47' 22"} (current),
                 +44.436d {+44d 26' 08"} (1950)
GRB_ERROR:       2.68 [deg radius, statistical only]
DATA_SIGNIF:     19.10 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2227.19 SOD {00:37:07.19} UT
GRB_PHI:         335.00 [deg]
GRB_THETA:        14.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         75.25 [deg]   Sun_angle= 6.1 [hr] (West of Sun)
MOON_POSTN:      163.48d {+10h 53m 56s}   +3.44d {+03d 26' 28"}
MOON_DIST:       126.19 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      120.80,-18.11 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       29.33, 36.61 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140703026/quicklook/glg_lc_medres34_bn140703026.gif
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=0).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:37:59 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      70
TRIGGER_NUM:     426040630
GRB_RA:            7.980d {+00h 31m 55s} (J2000),
                   8.176d {+00h 32m 42s} (current),
                   7.306d {+00h 29m 13s} (1950)
GRB_DEC:         +42.350d {+42d 21' 00"} (J2000),
                 +42.430d {+42d 25' 48"} (current),
                 +42.074d {+42d 04' 27"} (1950)
GRB_ERROR:       1.05 [deg radius, statistical only]
DATA_SIGNIF:     23.70 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2227.19 SOD {00:37:07.19} UT
GRB_PHI:         324.00 [deg]
GRB_THETA:        13.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         77.41 [deg]   Sun_angle= 6.3 [hr] (West of Sun)
MOON_POSTN:      163.48d {+10h 53m 56s}   +3.44d {+03d 26' 28"}
MOON_DIST:       128.97 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      119.09,-20.38 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       26.32, 35.26 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140703026/quicklook/glg_lc_medres34_bn140703026.gif
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        In the LAT Field-of-view.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(0.0<100sec) coincident with the FERMI_GBM event (trignum=0).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:39:44 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     603243,   Seg_Num: 0
GRB_RA:           12.9958d {+00h 51m 58.99s} (J2000),
                  13.2000d {+00h 52m 47.99s} (current),
                  12.2944d {+00h 49m 10.65s} (1950)
GRB_DEC:         +45.1015d {+45d 06' 05.4"} (J2000),
                 +45.1801d {+45d 10' 48.4"} (current),
                 +44.8298d {+44d 49' 47.4"} (1950)
GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.12e-08 [erg/cm2/sec]
GRB_SIGNIF:      16.21 [sigma]
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2349.88 SOD {00:39:09.88} UT,   112.8 [sec] since BAT Trigger Time
TAM[0-3]:        327.63 237.18 261.38 243.72
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         73.12 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.50d {+10h 53m 59s}   +3.44d {+03d 26' 11"}
MOON_DIST:       124.66 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.03,-17.77 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.86, 35.93 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.48 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 .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:39:54 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     603243,   Seg_Num: 0
GRB_RA:           12.9958d {+00h 51m 58.9s} (J2000),
                  13.2000d {+00h 52m 47.9s} (current),
                  12.2944d {+00h 49m 10.6s} (1950)
GRB_DEC:         +45.1015d {+45d 06' 05.4"} (J2000),
                 +45.1801d {+45d 10' 48.4"} (current),
                 +44.8298d {+44d 49' 47.4"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       263 [cnts]
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2349.88 SOD {00:39:09.88} UT,   112.8 [sec] since BAT Trigger Time
CENTROID_X:      273.31,  raw= 273  [pixels]
CENTROID_Y:      304.09,  raw= 304  [pixels]
ROLL:            73.97 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   14.83
GRB_POS_XRT_Z:   -75.39
IMAGE_URL:       sw00603243000msxps_rw.img
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         73.12 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.50d {+10h 54m 00s}   +3.44d {+03d 26' 10"}
MOON_DIST:       124.66 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.03,-17.77 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.86, 35.93 [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 .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:40:06 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     603243,   Seg_Num: 0
GRB_RA:           12.9958d {+00h 51m 58.9s} (J2000),
                  13.2000d {+00h 52m 47.9s} (current),
                  12.2944d {+00h 49m 10.6s} (1950)
GRB_DEC:         +45.1015d {+45d 06' 05.4"} (J2000),
                 +45.1801d {+45d 10' 48.4"} (current),
                 +44.8298d {+44d 49' 47.4"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       263 [cnts]
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2349.88 SOD {00:39:09.88} UT,   112.8 [sec] since BAT Trigger Time
CENTROID_X:      273.31,  raw= 273  [pixels]
CENTROID_Y:      304.09,  raw= 304  [pixels]
ROLL:            73.97 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   14.83
GRB_POS_XRT_Z:   -75.39
IMAGE_URL:       sw00603243000msxps_rw.img
SUN_POSTN:       102.00d {+06h 48m 01s}  +22.98d {+22d 58' 41"}
SUN_DIST:         73.12 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.50d {+10h 54m 00s}   +3.44d {+03d 26' 08"}
MOON_DIST:       124.66 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.03,-17.77 [deg] galactic lon,lat of the burst
ECL_COORDS:       31.86, 35.93 [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:     Thu 03 Jul 14 00:40:49 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     603243,   Seg_Num: 0
GRB_RA:           12.990d {+00h 51m 58s} (J2000),
                  13.194d {+00h 52m 47s} (current),
                  12.289d {+00h 49m 09s} (1950)
GRB_DEC:         +45.095d {+45d 05' 41"} (J2000),
                 +45.173d {+45d 10' 24"} (current),
                 +44.823d {+44d 49' 23"} (1950)
GRB_DATE:        16841 TJD;   184 DOY;   14/07/03
GRB_TIME:        2237.06 SOD {00:37:17.06} UT
TRIGGER_INDEX:   486
GRB_PHI:         -169.25 [deg]
GRB_THETA:        54.62 [deg]
DELTA_TIME:      32.00 [sec]
TRIGGER_DUR:     2.048 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     17.86 [sigma]
IMAGE_SIGNIF:    7.54 [sigma]
LC_URL:          sw00603243000msb.lc
SUN_POSTN:       102.01d {+06h 48m 01s}  +22.98d {+22d 58' 40"}
SUN_DIST:         73.12 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.51d {+10h 54m 01s}   +3.43d {+03d 26' 01"}
MOON_DIST:       124.67 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.03,-17.78 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       31.85, 35.92 [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 = 144.42,-11.36 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:46:45 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     603243,   Seg_Num: 0
POINT_RA:         12.969d {+00h 51m 53s} (J2000)
POINT_DEC:       +45.091d {+45d 05' 28"} (J2000)
POINT_ROLL:      73.970d
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2360.11 SOD {00:39:20.11} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        7.454
N_STARS:         65
X_OFFSET:        586 [pixels]
Y_OFFSET:        446 [pixels]
X_MAX:           1545 [pixels]
Y_MAX:           1405 [pixels]
DET_THRESH:      24
PHOTO_THRESH:    14
SL_URL:          sw00603243000msufc0123.fits
SUN_POSTN:       102.01d {+06h 48m 02s}  +22.98d {+22d 58' 39"}
SUN_DIST:         73.14 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.55d {+10h 54m 12s}   +3.42d {+03d 25' 05"}
MOON_DIST:       124.72 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.01,-17.78 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.83, 35.93 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:47:13 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     603243,   Seg_Num: 0
POINT_RA:         12.969d {+00h 51m 53s} (J2000)
POINT_DEC:       +45.091d {+45d 05' 28"} (J2000)
POINT_ROLL:      73.970d
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2360.11 SOD {00:39:20.11} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        7.454
N_STARS:         65
X_OFFSET:        586 [pixels]
Y_OFFSET:        446 [pixels]
X_MAX:           1545 [pixels]
Y_MAX:           1405 [pixels]
DET_THRESH:      24
PHOTO_THRESH:    14
SL_URL:          sw00603243000msufc0123.fits
SUN_POSTN:       102.01d {+06h 48m 02s}  +22.98d {+22d 58' 39"}
SUN_DIST:         73.14 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.56d {+10h 54m 13s}   +3.42d {+03d 25' 00"}
MOON_DIST:       124.72 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.01,-17.78 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.83, 35.93 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:48:31 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     603243,   Seg_Num: 0
POINT_RA:         12.969d {+00h 51m 53s} (J2000)
POINT_DEC:       +45.091d {+45d 05' 28"} (J2000)
ROLL:            73.970d
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2360.11 SOD {00:39:20.11} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     426040772
X_OFFSET:        906 [pixels]
Y_OFFSET:        766 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1066
Y_GRB_POS:       926
BINNING_INDEX:   1
IM_URL:          sw00603243000msuni0136.fits
SUN_POSTN:       102.01d {+06h 48m 03s}  +22.98d {+22d 58' 39"}
SUN_DIST:         73.14 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.57d {+10h 54m 16s}   +3.41d {+03d 24' 48"}
MOON_DIST:       124.73 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.01,-17.78 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.83, 35.93 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 03 Jul 14 00:48:52 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     603243,   Seg_Num: 0
POINT_RA:         12.969d {+00h 51m 53s} (J2000)
POINT_DEC:       +45.091d {+45d 05' 28"} (J2000)
ROLL:            73.970d
IMG_START_DATE:  16841 TJD;   184 DOY;   14/07/03
IMG_START_TIME:  2360.11 SOD {00:39:20.11} UT,   123.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     426040772
X_OFFSET:        906 [pixels]
Y_OFFSET:        766 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1066
Y_GRB_POS:       926
BINNING_INDEX:   1
IM_URL:          sw00603243000msuni0136.fits
SUN_POSTN:       102.01d {+06h 48m 03s}  +22.98d {+22d 58' 39"}
SUN_DIST:         73.14 [deg]   Sun_angle= 5.9 [hr] (West of Sun)
MOON_POSTN:      163.57d {+10h 54m 16s}   +3.41d {+03d 24' 44"}
MOON_DIST:       124.73 [deg]
MOON_ILLUM:      27 [%]
GAL_COORDS:      123.01,-17.78 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       31.83, 35.93 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN Circular #16503
D. Kocevski (NASA/GSFC/ORAU), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (NASA/UMBC), J. A. Kennea (PSU), N. P. M. Kuin (UCL-MSSL), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester), J. L. Racusin (NASA/GSFC), M. H. Siegel (PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 00:37:17 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140703A (trigger=603243). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 12.990, +45.095 which is
```
   RA(J2000) = 00h 51m 58s
   Dec(J2000) = +45d 05' 41"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a two-peak structure with a duration of about 90 sec. The peak count rate was ~1781 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 00:39:09.8 UT, 112.8 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 12.9958, 45.1015 which is equivalent to:
```
   RA(J2000)  = +00h 51m 58.99s
   Dec(J2000) = +45d 06' 05.4"
```
with an uncertainty of 4.7 arcseconds (radius, 90% containment). This location is 27 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
The initial flux in the 2.5 s image was 1.12e-08 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 116 seconds with the White filter starting 123 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 XRT error circle. 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 0.10.
Burst Advocate for this burst is D. Kocevski (dankocevski AT gmail.com). 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 Circular #16504
R. Cunniffe, A. Gonzalez-Rodriguez, V. Casanova, M. Jelinek, S. Jeong, O. Lara-Gil, S. R. Oates, R. Sanchez-Ramirez, J. C. Tello (IAA-CSIC Granada) , P. Kubanek (IP-ASCR, Prague), J. Gorosabel (IAA-CSIC, UPV-EHU) and A. J. Castro-Tirado (IAA-CSIC, ISA-UMA), report:
Following the detection of GRB 140703A by Swift (Kocevski et al., GCNC 16503), the 0.6m TELMA robotic telescope at the BOOTES-2 astronomical station Malaga (Spain), responded to the GRB location starting at 00:30:0= 2 UT (i.e. 45s postburst, in the clear filter, 5s integrations). In the longer exposures (i=E2=80=99-band, 60s) starting at 00:47:30 (i.e. 10 min postburst), a faint optical source is barely detected in the images, at the outskirts of the XRT position, which is confirmed by the 1.5m OSN images at Sierra Nevada Observatory starting at 00:54 UT (I-band), with a magnitude of about 20, which does not seem to be present in the DSS-2. Th= e preliminary position (+/- 1") is:
RA(J2000) =3D 00 51 59.05, Dec (J2000) =3D +45 06 06.
The source is detected in all optical filters. Additional observations (imaging and spectroscopy) are ongoing.
GCN Circular #16505
A. J. Castro-Tirado (IAA-CSIC), R. Cunniffe (IAA-CSIC), R. Sanchez-Ramirez (IAA-CSIC), J. Gorosabel (IAA-CSIC/UPV-EHU), M. Jelinek (IAA-CSIC), S.R. Oates (IAA-CSIC), S. Jeong (IAA-CSIC), J. R. Tello (IAA-CSIC), S. Pandey (ARIES), report on behalf of a larget collaboration:
"We obtained 2x450s optical spectra of GRB 140703A (Kocevski et al. GCN16503) optical afterglow (Cunniffe et al. GCN16504) with the 10.4m GTC(+OSIRIS) with a wavelength coverage of 4000--9500 AA based on R1000R and R1000B grisms. The combined spectrum shows a deep Lyman-alpha absorption and many metallic absorption lines (AlI, CII, CIV,AlIII..). Using archival calibration lamps we infer a common redshift of z=3.14."
GCN Circular #16506
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 2188 s of XRT Photon Counting mode data and 5 UVOT images for GRB 140703A, 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 = 12.99574, +45.10185 which is equivalent to:
```
RA (J2000): 00h 51m 58.98s
Dec (J2000): +45d 06' 06.7"
```
with an uncertainty of 1.7 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 #16507
E. Gorbovskoy, V. Lipunov, M.Pruzhinskaya, P.Balanutsa, V.Kornilov, D.Kuvshinov, N.Tyurina, A.Kuznetsov Lomonosov Moscow State University, Sternberg Astronomical Institute
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov, A. Gabovich Blagoveschensk Educational State University, Blagoveschensk
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University
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 Kislovodsk was pointed to the GRB 140703A (Kocevski et. al., GCN 16503) 2 sec after notice time and 45 sec after trigger time at 2014-07-03 00:38:03 UT on morning sky in two polarizations. We have 10 good frames with an increasing exposition from 10 to 70 seconds that of that as there overlighting came. On our first (10s exposure) set we haven`t see optical transient (Cunniffe et. al., GCN 16504; Castro-Tirado et. al., GCN 16505) on our single and coadd image.

 
Pro.type   T-T_trig   T_start  Exp.time   Limit   Filt.   Tube. 
             (mean)     (UT) 
  Alert        51     00:38:03     10      15.9     P-       EAST 
  Alert        51     00:38:03     10      15.7     P|       WEST 
  Coadd        77     00:38:03     40      16.8     P-       EAST 
  Coadd        77     00:38:03     40      16.5     P|       WEST 
  Coadd       169     00:38:03     180     16.7     P|       WEST 
  Coadd       244     00:38:03     310     17.5     P-       EAST 
  Coadd       244     00:38:03     570     18.0    White   WEST+EAST 
  Alert        72     00:38:24     10      15.9     P-       EAST 
  Alert        72     00:38:24     10      15.8     P|       WEST 
  Alert        98     00:38:45     20      16.0     P|       WEST 
  Alert        98     00:38:45     20      16.2     P-       EAST 
  Alert       129     00:39:16     20      15.7     P|       WEST 
  Alert       129     00:39:16     20      16.2     P-       EAST
  Coadd       174     00:39:16     90      17.1     P-       EAST 
  Coadd       174     00:39:16     90      16.4     P|       WEST 
  Alert       164     00:39:47     30      16.4     P-       EAST 
  Alert       164     00:39:47     30      15.7     P|       WEST 
  Alert       210     00:40:27     40      15.7     P|       WEST 
  Alert       210     00:40:27     40      16.5     P-       EAST 
  Alert       266     00:41:18     50      15.5     P|       WEST 
  Alert       266     00:41:18     50      16.4     P-       EAST 
  Coadd       342     00:41:18     80      16.5     P-       EAST

The message may be cited.

GCN Circular #16508
The correct sublject of the GCN 16507 is "GRB 140703A: MASTER optical observations"
I am sorry,
Vladimir Lipunov
GCN Circular #16509
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), D. Kocevski (NASA/GSFC/ORAU), 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-239 to T+963 sec from recent telemetry downlinks, we report further analysis of BAT GRB 140703A (trigger #603243) (Kocevski, et al., GCN Circ. 16503). The BAT ground-calculated position is RA, Dec = 13.010, 45.102 deg, which is
```
   RA(J2000)  =  00h 52m 02.4s 
   Dec(J2000) = +45d 06' 07.5" 
```
with an uncertainty of 1.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 14%.
The mask-weighted light curve shows several peaks starting at ~T-70 sec, peakings at ~T-50, ~T+2 & ~T+70 sec, and ending at ~T+140 sec. T90 (15-350 keV) is 67.1 +- 67.9 sec (estimated error including systematics).
The time-averaged spectrum from T-2.5 to T+134.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.74 +- 0.13. The fluence in the 15-150 keV band is 3.9 +- 0.3 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.36 sec in the 15-150 keV band is 2.8 +- 0.6 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/603243/BA/
GCN Circular #16510
K.L. Page (U. Leicester), C. Pagani (U. Leicester), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), P. D'Avanzo (INAF-OAB), M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester) and D. Kocevski report on behalf of the Swift-XRT team:
We have analysed 7.5 ks of XRT data for GRB 140703A (Kocevski et al. GCN Circ. 16503), from 104 s to 39.2 ks after the BAT trigger. The data comprise 126 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. 16506).
The light curve can be modelled with a series of power-law decays. The initial decay index is alpha=0.1 (+1.5, -1.6). At T+120 s the decay steepens to an alpha of 6.8 (+0.4, -0.3). The light curve breaks again at T+158 s to a decay with alpha=5.1 (+/-0.4), and again at T+319 s s to alpha=0.1 (+0.6, -0.4), before a final break at T+7413 s s after which the decay index is 1.56 (+0.14, -0.13).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.84 (+0.08, -0.07). The best-fitting absorption column is 5.2 (+/-0.6) x 10^22 cm^-2, at a redshift of 3.14, in addition to the Galactic value of 1.3 x 10^21 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.82 (+/-0.09) and a best-fitting absorption column of 5.4 (+8.0, -5.4) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.8 x 10^-11 (4.6 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Galactic foreground: 1.3 x 10^21 cm^-2
Intrinsic column:    5.4 (+8.0, -5.4) x 10^21 cm^-2 at z=3.14
Photon index:	     1.82 (+/-0.09)
```
If the light curve continues to decay with a power-law decay index of 1.56, the count rate at T+24 hours will be 0.022 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 8.4 x 10^-13 (1.0 x 10^-12) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00603243.
This circular is an official product of the Swift-XRT team.
GCN Circular #16511
F. Ciabattari, S. Donati, E. Mazzoni, G. Petroni and M. Rossi (Monte Agliale Observatory, Borgo a Mozzano, Italy) report:
We observed the field of GRB 140703A (Kocevski et al., GCNC 16503) with the automatic 0.5m Newtonian telescope + FLI ProLine PL4710 camera at Monte Agliale Observatory (Borgo a Mozzano, Italy, MPC code 159). The observations started at 2014-07-03 01:57:43 UT (~80 minutes after the trigger) and we co-added 20 unfiltered CCD exposures of 20 seconds each. We detect a new source of mag. R = 19.8 +/-0.3 (USNO-B1 catalogue) at the following position:
```
R.A.(J2000) = 00h 51m 59.01s
Dec.(J2000) = +45d 06' 06.1"
```
FITS files are available on request from fabciaba@alice.it. The message may be cited.
GCN Circular #16512
P. Jenke (UAH) reports on behalf of the Fermi GBM Team:
"At 00:37:07.19 UT on July 3 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140603A (trigger 426040630/140703026), which was also detected by Swift (D. Kocevski et al. 2014, GCN 16503). The GBM on-ground location, using the Fermi GBM trigger data, is consistent with the Swift/XRT location and the TELMA robotic telescope location (R. Cunniffe et al. 2014 GCN16504).
The angle of the burst direction to the Fermi LAT boresight is 16 degrees.
The GBM light curve consists of one main FRED-like peak near T0 and a late smaller peak at ~T0+70s with a duration (T90) of about 84s (50-300 keV). The time-averaged spectrum from T0-4s to T0+31s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.10 +/- 0.06 and the cutoff energy, parameterized as Epeak, is 177 +/- 14 keV.
The event fluence (10-1000 keV) in this time interval is (7.4 +/- 0.4)E-07 ergs/cm^2. The 1.0-sec peak photon flux measured starting from T0+9.7s in the 10-1000 keV band is 4.1 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #16513
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 (ORAU/GSFC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=C3=A9 A. de Diego (UNAM), Leonid Georgiev (UNAM)= , Jes=C3=BAs Gonz=C3=A1lez (UNAM), Carlos Rom=C3=A1n-Z=C3=BA=C3=B1iga (UNAM), Neil Geh= rels (GSFC), and Harvey Moseley (GSFC) report:
We observed the field of GRB 140703A (Kocevski, et al., GCN 16503) with t= he Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=C3=B3mico Nacion= al on Sierra San Pedro M=C3=A1rtir from 2014/07 3.43 to 2014/07 3.47 UTC (9.74 = to 10.68 hours after the BAT trigger), obtaining a total of 0.71 hours exposure in the r and i bands and 0.29 hours exposure in the Z, Y, J, and H bands.
For a source within the Swift-XRT error circle, in comparison with the SD= SS DR9 and 2MASS, we obtain the following detections:
```
  r     20.32 +/- 0.03
  i     19.72 +/- 0.03
  Z     18.53 +/- 0.05
  Y     18.31 +/- 0.05
  J     19.60 +/- 0.17
  H     18.98 +/- 0.09
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB.
We thank the staff of the Observatorio Astron=C3=B3mico Nacional in San Pedro M=C3=A1rtir.
GCN Circular #16514
D. A. Perley (Caltech) and S. B. Cenko (NASA/GSFC) report:
We observed the afterglow of GRB 140703A (Kocevski et al., GCN 16503) with the Palomar 60-inch (P60) robotic telescope. We acquired 3x180s in each of the r, i, and z filters between 08:40:37 and 09:11:02 on 2014-07-03 UT. We measure the following magnitudes:
```
    r = 20.03 +/- 0.02   t_mid = 0.3462 days
    i = 19.46 +/- 0.02   t_mid = 0.3380 days
    z = 18.99 +/- 0.05   t_mid = 0.3533 days
```
This indicates very little fading since the observations of Cunniffe et al. (GCN 16504) and Ciabattari et al. (GCN 16511). However, the spectroscopy of Castro-Tirado et al. (GCN 16505) confirms this source is the GRB afterglow.
We note that the afterglow color is fairly red (beta~2.2 after correction for foreground extinction), possibly indicating significant dust obscuration in the host frame.
GCN Circular #16515
D. A. Perley (Caltech) reports on behalf of a larger collaboration:
We observed the position of GRB 140703A (Kocevski et al., GCN 16503) with the Combined Array for Research in Millimeter Astronomy starting at 2013-07-03 16:39:55 UT (0.668 days post-GRB) at a mean frequency of ~93 GHz; the observation is still ongoing.
We detect a strong source in the existing data set at the location of the X-ray and optical afterglows (Goad et al., GCN 16506; Castro-Tirado et al., GCN 16504) with a flux of approximately 2 mJy.
We thank Nikolaus Volgenau, observers K. Jameson and E. Grand, and the CARMA staff for executing the observation.
GCN Circular #16516
A. Corsi (GWU / TTU) reports on behalf of a larger collaboration:
We imaged the position of GRB 140703A (Kocevski et al., GCN 16503) with the Karl G. Jansky Very Large Array (VLA) in K-band, starting at about 8.5 hours after the burst. A provisional reduction shows a source consistent with the location of the GRB X-ray and optical afterglows (Goad et al., GCN 16506; Cunniffe et al., GCN 16504). At this time, we estimate a preliminary flux of about 280 uJy at 19 GHz.
Further observations are planned.
GCN Circular #16536
A. Volnova (IKI), R. Inasaridze (AAO), O. Kvaratskhelia (AAO), V. Ayvazian (AAO), Yu. Krugly (IA KhNU), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the Swift GRB 140703A (Kocevski et al., GCN 16503) with=20 AS-32 (0.7m) telescope of Abastumani Observatory starting on July, 07=20 (UT) 23:27:06. We obtained several unfiltered frames under exellent=20 weather with exposure of each frame of 120 s. The optical afterglow=20 (Cunniffe et al. GCN16504) is well detected on the stacked image.
Details of a photometry of the pi-redsifted GRB 140703A (Castro-Tirado=20 et al., GCN 16505) are following:
```
date       UT start   t-T0       Filter  Exp.    OT        err
                      (mid, days)         (s)

2014-07-03 23:27:06  0.97235     None    23*120  21.27 +/- 0.08
```
The photometry is based on following SDSS stars and gri -> R=20 transformation (Lupton, 2005)
```
SDSS id              R_Lupton
J005158.97+450627.1  17.374 =C2=B1 0.011
J005153.14+450619.0  16.257 =C2=B1 0.011
J005202.70+450621.8  18.216 =C2=B1 0.014
```
Finding chart can be found at http://grb.rssi.ru/GRB140703A/GRB140703A_AAO_fc.png
GCN Circular #16540
M. H. Siegel (PSU) and D. Kocevski (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140703A 123 s after the BAT trigger (Kocevski et al., GCN Circ. 16503). No optical afterglow consistent with the XRT position (Kocevski et al. GCN Circ. 16503) 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           123          239          114         >19.7
white              123         5830          507         >20.5
v                 4606         4806          197         >19.3
b                 3991         5626          393         >20.2
u                 3785         5420          393         >20.1
w1                5016         5216          197         >19.7
m2                4811         5010          197         >20.2
w2                4401         6002          359         >20.7
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.10 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #16543
G. E. Anderson, R. P. Fender, T. D. Staley (University of Oxford), A. J. van der Horst (University of Amsterdam) and A. Rowlinson (CASS)
We observed the position of GRB 140703A (GCN 16503) at 15 GHz with the Arcminute Microkelvin Imager (AMI-LA) starting on 2014 July 3.03 to 3.12 UT and July 4.22 to 4.38 UT, corresponding to <12 minutes and 1.19 days post-burst. No radio counterpart was detected during our first observation with a 3-sigma upper limit of 0.18 mJy. However, the radio counterpart (GCN 16515 and 16516) was detected during our second observation with a preliminary flux of 0.25 +/- 0.05 mJy.
Further AMI monitoring is planned. We thank the AMI staff for scheduling these observations.
GCN Circular #16591
A. J. Nayana (NCRA-TIFR) and Poonam Chandra (NCRA-TIFR) reports:
We carried out Giant Metrewave Radio Telescope (GMRT) observations of GRB 140703A (GCN 16503) in the 1390 MHz band on 2013 July 10.12 UT and 12.91 UT, respectively. We do not detect the radio afterglow of the GRB in this frequency. The 3-sigma upper limit at the two epochs are 174 and 177 uJy, respectively. The map resolutions of the two images are 2.5"x2.0" and 3.1"x2.1", respectively.
We thank GMRT staff for making these observations possible.

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Jochen Greiner, last update: 15-Jul-2014 [Disclaimer]