Gamma-ray Burst 140710B

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 10 Jul 14 21:37:39 UT
NOTICE_TYPE:    INTEGRAL Wakeup
TRIGGER_NUM:    6686,   Sub_Num: 0
GRB_RA:         204.6680d {+13h 38m 40s} (J2000),
                204.9096d {+13h 39m 38s} (current),
                203.8414d {+13h 35m 22s} (1950)
GRB_DEC:        -58.5586d {-58d 33' 30"} (J2000),
                -58.6320d {-58d 37' 54"} (current),
                -58.3048d {-58d 18' 16"} (1950)
GRB_ERROR:      3.02 [arcmin, radius, statistical only]
GRB_INTEN:      10.18 [sigma] 
GRB_TIME:       77854.58 SOD {21:37:34.58} UT
GRB_DATE:       16848 TJD;   191 DOY;   14/07/10
SC_RA:          199.16 [deg] (J2000) 
SC_DEC:         -67.21 [deg] (J2000) 
SUN_POSTN:      110.09d {+07h 20m 21s}  +22.15d {+22d 09' 11"}
SUN_DIST:       111.25 [deg]   Sun_angle= -6.3 [hr] (East of Sun)
MOON_POSTN:     266.25d {+17h 44m 59s}  -18.98d {-18d 59' 04"}
MOON_DIST:       59.08 [deg] 
GAL_COORDS:     309.07,  3.75 [deg] galactic lon,lat of the burst
ECL_COORDS:     228.68,-44.12 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=40.0000 and Time_Error=40.0000.
COMMENTS:        There is a bright star (mag=6.10) 1.99 arcmin from this position.      
COMMENTS:       Possibly real GRB event

GCN NOTICE

 
TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 10 Jul 14 21:40:38 UT
NOTICE_TYPE:    INTEGRAL Refined
TRIGGER_NUM:    6686,   Sub_Num: 1
GRB_RA:         204.6574d {+13h 38m 38s} (J2000),
                204.8990d {+13h 39m 36s} (current),
                203.8306d {+13h 35m 19s} (1950)
GRB_DEC:        -58.5853d {-58d 35' 06"} (J2000),
                -58.6587d {-58d 39' 30"} (current),
                -58.3314d {-58d 19' 52"} (1950)
GRB_ERROR:      2.78 [arcmin, radius, statistical only]
GRB_INTEN:      13.82 [sigma] 
GRB_TIME:       77858.58 SOD {21:37:38.58} UT
GRB_DATE:       16848 TJD;   191 DOY;   14/07/10
SC_RA:          199.16 [deg] (J2000) 
SC_DEC:         -67.21 [deg] (J2000) 
SUN_POSTN:      110.09d {+07h 20m 21s}  +22.15d {+22d 09' 10"}
SUN_DIST:       111.25 [deg]   Sun_angle= -6.3 [hr] (East of Sun)
MOON_POSTN:     266.28d {+17h 45m 07s}  -18.98d {-18d 59' 02"}
MOON_DIST:       59.11 [deg]
GAL_COORDS:     309.06,  3.72 [deg] galactic lon,lat of the burst
ECL_COORDS:     228.69,-44.15 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=20.0000 and Time_Error=20.0000.
COMMENTS:        There is a bright star (mag=6.10) 1.99 arcmin from this position.      
COMMENTS:       Possibly real GRB event
COMMENTS:       
COMMENTS:        NOTE: This INTEGRAL event is temporally(1.0<100sec) coincident
with the FERMI_GBM event (trignum=426721060).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 10 Jul 14 21:38:04 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     426721060
GRB_RA:          221.017d {+14h 44m 04s} (J2000),
                 221.280d {+14h 45m 07s} (current),
                 220.114d {+14h 40m 27s} (1950)
GRB_DEC:         -55.433d {-55d 25' 59"} (J2000),
                 -55.494d {-55d 29' 38"} (current),
                 -55.222d {-55d 13' 17"} (1950)
GRB_ERROR:       30.13 [deg radius, statistical plus systematic]
GRB_INTEN:       42 [cnts/sec]
DATA_SIGNIF:     5.10 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        16848 TJD;   191 DOY;   14/07/10
GRB_TIME:        77857.94 SOD {21:37:37.94} UT
GRB_PHI:         118.00 [deg]
GRB_THETA:        70.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      2.89
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      57%  GRB
2nd_MOST_LIKELY:  24%  Generic SGR
DETECTORS:       0,0,0, 0,0,0, 0,0,0, 0,1,1, 0,0,
SUN_POSTN:       110.09d {+07h 20m 21s}  +22.15d {+22d 09' 10"}
SUN_DIST:        120.03 [deg]   Sun_angle= -7.4 [hr] (East of Sun)
MOON_POSTN:      266.25d {+17h 45m 01s}  -18.98d {-18d 59' 04"}
MOON_DIST:        49.68 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      318.50,  4.00 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      237.39,-37.40 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140710901/quicklook/glg_lc_medres34_bn140710901.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 31.50,-6.03 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(3.0<100sec) coincident with the INTEGRAL event (trignum=6686).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Thu 10 Jul 14 21:38:20 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      56
TRIGGER_NUM:     426721060
GRB_RA:           85.490d {+05h 41m 58s} (J2000),
                  85.446d {+05h 41m 47s} (current),
                  85.643d {+05h 42m 34s} (1950)
GRB_DEC:         -70.720d {-70d 43' 11"} (J2000),
                 -70.714d {-70d 42' 48"} (current),
                 -70.742d {-70d 44' 28"} (1950)
GRB_ERROR:       30.65 [deg radius, statistical only]
DATA_SIGNIF:     5.40 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        16848 TJD;   191 DOY;   14/07/10
GRB_TIME:        77857.94 SOD {21:37:37.94} UT
GRB_PHI:         151.00 [deg]
GRB_THETA:       108.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4143 (Gnd S/W Version number)
SUN_POSTN:       110.09d {+07h 20m 21s}  +22.15d {+22d 09' 10"}
SUN_DIST:         94.47 [deg]   Sun_angle= 1.6 [hr] (West of Sun)
MOON_POSTN:      266.25d {+17h 45m 01s}  -18.98d {-18d 59' 03"}
MOON_DIST:        90.30 [deg]
MOON_ILLUM:      96 [%]
GAL_COORDS:      281.31,-31.21 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      289.46,-85.53 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2014/bn140710901/quicklook/glg_lc_medres34_bn140710901.gif
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
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(3.0<100sec) coincident with the INTEGRAL event (trignum=6686).

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Thu 10 Jul 14 23:38:24 UT
NOTICE_TYPE:    INTEGRAL Offline
TRIGGER_NUM:    6686,   Sub_Num: 2
GRB_RA:         204.6570d {+13h 38m 38s} (J2000),
                204.8986d {+13h 39m 36s} (current),
                203.8302d {+13h 35m 19s} (1950)
GRB_DEC:        -58.5853d {-58d 35' 06"} (J2000),
                -58.6587d {-58d 39' 30"} (current),
                -58.3314d {-58d 19' 52"} (1950)
GRB_ERROR:      2.78 [arcmin, radius, statistical only]
GRB_INTEN:      13.82 [sigma] 
GRB_TIME:       77858.58 SOD {21:37:38.58} UT
GRB_DATE:       16848 TJD;   191 DOY;   14/07/10
SC_RA:          199.16 [deg] (J2000) 
SC_DEC:         -67.21 [deg] (J2000) 
SUN_POSTN:      110.17d {+07h 20m 41s}  +22.14d {+22d 08' 31"}
SUN_DIST:       111.20 [deg]   Sun_angle= -6.3 [hr] (East of Sun)
MOON_POSTN:     267.55d {+17h 50m 13s}  -18.96d {-18d 57' 50"}
MOON_DIST:       59.77 [deg]
GAL_COORDS:     309.06,  3.72 [deg] galactic lon,lat of the burst
ECL_COORDS:     228.69,-44.15 [deg] ecliptic lon,lat of the burst
COMMENTS:       INTEGRAL GRB Coordinates.
COMMENTS:       Time_Scale=20.0000 and Time_Error=20.0000.
COMMENTS:       There is a bright star (mag=6.10) 1.99 arcmin from this position.      
COMMENTS:       confirmed_grb
COMMENTS:       
COMMENTS:        NOTE: This INTEGRAL event is temporally(1.0<100sec) coincident
with the FERMI_GBM event (trignum=426721060).

GCN Circular #16576
D.Gotz (CEA, Saclay), S.Mereghetti (IASF-Milano), C.Ferrigno, E.Bozzo, D. Malishev (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report:
a gamma ray burst lasting about 30 s has been detected by IBAS in the IBIS/ISGRI data at 21:37:30 UT of July 11, 2014. Due to a S/W maintenance problem at ISDC no refined coordinates can currently be computed. So the automatic coordinates should be considered at this time. Refined coordinates will be posted as soon as the attitude files will be available again. The automatic coordinates are:
```
R.A.=  204.657 deg
DEC.=  -58.5854  deg
```
with an uncertainty of 2.8 arcmin (90% c.l.).
A preliminary analysis gives a peak flux of about 1.2 counts/cm2/s (20-200 keV, 1-s integration time) and a fluence in the same energy range of about 1e-6 erg/cm2. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html
GCN Circular #16578
D.Gotz (CEA, Saclay), S.Mereghetti (IASF-Milano), C.Ferrigno, E.Bozzo, (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report:
We derived for the INTEGRAL GRB 140710B (Gotz et al., GCN 16576) a refined position and a reduced error box using the updated attitude information and the IBIS/ISGRI data. The refined coordinates are:
```
R.A.=   204.6457 deg
Dec.=  -58.5913  deg
```
with an uncertainty of 1.7 arcmin (90% c.l.). We note that this refined position is fully consistent with the automatic one.
GCN Circular #16579
E. Burns (UAH) reports on behalf of the Fermi GBM Team:
"At 21:37:37.94 UT on 10 July 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140710B (trigger 426721060 / 140710901). which was also detected by INTEGRAL IBIS/ISGRI (Gotz et al., GCN 16576). The GBM on-ground location is consistent with the refined INTEGRAL position (Gotz et al., GCN 16578).
The angle from the Fermi LAT boresight is 79 degrees.
The GBM light curve shows multiple peaks with a duration (T90) of about 30.7 s (50-300 keV). The time-averaged spectrum from T0-56 s to T0+68 s is best fit by a simple power law function with index -1.9 +/- 0.1.
The event fluence (10-1000 keV) in this time interval is (2.3 +/- 0.4)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0-1.2s in the 10-1000 keV band is 2.7 +/- 0.5 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."

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Jochen Greiner, last update: 13-Jul-2014 [Disclaimer]