GRB140706A

This page lists all entries on GRB140706A in GRBweb

Summary Fermi GBM IPN Swift GCN 16531 GCN 16532 GCN 16534 GCN 16537 GCN 16538 GCN 16539 GCN 16541

Summary table
Variable Value Source
GRB_name_Fermi GRB140706815
T0 19:33:20.040 UTC Fermi_GBM
ra 49.2933° Swift
decl -38.0522° Swift
pos_error 5.82e-05° Swift
T90 43.776 s Fermi_GBM
T90_error 2.721 s Fermi_GBM
T90_start 19:33:20.040 UTC Fermi_GBM
fluence 2.49e-06 erg/cm² Fermi_GBM
fluence_error 7.80e-08 erg/cm² Fermi_GBM
T100 61.26 s
GBM_located False
mjd 56844.81481527778 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB140706815
trigger_name bn140706815
ra 49.2950°
decl -38.0508°
pos_error 3.34e+00°
datum 2014-07-06
t_trigger 19:33:33.864 UTC
T90 43.776 s
T90_error 2.721 s
T90_start 19:33:20.040 UTC
fluence 2.49e-06 erg/cm²
fluence_error 7.80e-08 erg/cm²
flux_1024 2.95e+00 erg/cm²/s
flux_1024_error 2.59e-01 erg/cm²/s
flux_1024_time 4.48e-01 erg/cm²/s
flux_64 4.84e+00 erg/cm²/s
flux_64_error 1.13e+00 erg/cm²/s
IPN table
GRB_name GRB140706A
ra 49.3042°
decl -38.0667°
pos_error 5.00e-02°
Swift table
GRB_name GRB140706A
t_trigger 19:33:33 UTC
ra 49.2933°
decl -38.0522°
pos_error 5.82e-05°
T90 48.3 s
fluence 2.00e-06 erg/cm²
GCN 16531 table
GRB_name GRB140706A
GCN_number 16531
Detection_method Swift Det
t_trigger 19:33:33 UTC
ra 49.3060°
decl -38.0590°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16531 SUBJECT: GRB 140706A: Swift detection of a burst with an optical counterpart DATE: 14/07/06 19:42:34 GMT FROM: Scott Barthelmy at NASA/GSFC F. E. Marshall (NASA/GSFC), S. D. Barthelmy (GSFC), S. B. Cenko (GSFC), J. R. Cummings (NASA/UMBC), J. A. Kennea (PSU), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Swift Team: At 19:33:33 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140706A (trigger=603587). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 49.306, -38.059 which is RA(J2000) = 03h 17m 13s Dec(J2000) = -38d 03' 33" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows two main peaks with a total duration of about 55 sec. The peak count rate was ~1700 counts/sec (15-350 keV), at ~0 sec after the trigger. The XRT began observing the field at 19:34:46.0 UT, 72.8 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 49.29517, -38.05083 which is equivalent to: RA(J2000) = 03h 17m 10.84s Dec(J2000) = -38d 03' 03.0" with an uncertainty of 4.1 arcseconds (radius, 90% containment). This location is 42 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. No spectrum from the promptly downlinked event data is yet available to determine the column density. The initial flux in the 2.5 s image was 5.09e-10 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 82 seconds after the BAT trigger. There is a candidate afterglow in the list of sources generated on-board at RA(J2000) = 03:17:10.40 = 49.29332 DEC(J2000) = -38:03:07.4 = -38.05205 with a 90%-confidence error radius of about 1.10 arc sec. This position is 4.5 arc sec. from the center of the XRT error circle. The estimated magnitude is 19.05. No correction has been made for the expected extinction corresponding to E(B-V) of 0.02. Burst Advocate for this burst is F. E. Marshall (marshall AT milkyway.gsfc.nasa.gov). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
GCN 16532 table
GRB_name GRB140706A
GCN_number 16532
Detection_method Swift-XRT Det
ra 49.2943°
decl -38.0519°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16532 SUBJECT: GRB 140706A: Enhanced Swift-XRT position DATE: 14/07/06 23:55:10 GMT FROM: Phil Evans at U of Leicester A.P. Beardmore, P.A. Evans, M.R. Goad and J.P. Osborne (U. Leicester) report on behalf of the Swift-XRT team. Using 1464 s of XRT Photon Counting mode data and 1 UVOT images for GRB 140706A, 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 = 49.29426, -38.05194 which is equivalent to: RA (J2000): 03h 17m 10.62s Dec (J2000): -38d 03' 07.0" with an uncertainty of 1.8 arcsec (radius, 90% confidence). This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177). This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN 16534 table
GRB_name GRB140706A
GCN_number 16534
Detection_method GROND
Circular_text TITLE: GCN CIRCULAR NUMBER: 16534 SUBJECT: GRB140706A: GROND detection of the Optical/NIR afterglow DATE: 14/07/07 10:05:11 GMT FROM: Patricia Schady at MPE/Swift P. Schady (MPE Garching), S. Klose (TLS Tautenburg) and J.Greiner (MPE Garching) report on behalf of the GROND team: We observed the field of GRB 140706A (Swift-603587; Marshall et al., GCN #16531) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP 120, 405) mounted at the 2.2 m MPG telescope at ESO La Silla Observatory (Chile). Observations started at 09:01UT on 7th-July, 13.5 hours after the GRB trigger, and are continuing. They were performed at an average seeing of 1.3 and at an average airmass of 1.5. We found a single point source within the 2.2" Swift-XRT enhanced error circle reported by Beardmore et al. (GCN #16532) consistent with the UVOT position (Marshall et al., GCN #16531). Based on the first 8 min exposure, we estimate preliminary magnitudes (all in AB system) of g' = 22.4 +/- 0.1 mag, r' = 22.1 +/- 0.1 mag, i' = 21.9 +/- 0.1 mag, z' = 21.5 +/- 0.1 mag, J > 20.9 mag, H > 20.3 mag, and K > 18.8 mag. Given magnitudes are calibrated against GROND zeropoints as well as 2MASS field stars and are not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.02 mag in the direction of the burst (Schlegel et al. 1998).
GCN 16537 table
GRB_name GRB140706A
GCN_number 16537
Detection_method Fermi GBM Det
t_trigger 19:33:33.860 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16537 SUBJECT: GRB 140706A: Fermi GBM detection DATE: 14/07/07 16:43:23 GMT FROM: Binbin Zhang at UAH Bin-Bin Zhang (UAH) reports on behalf of the Fermi GBM Team: "At 19:33:33.86 UT on 06 July 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140706A (trigger 426368016 / 140706815) which was also detected by Swift (Marshall et al. 2014, GCN 16531). The GBM on-ground location, using the Fermi GBM trigger data, is consistent with the Swift/BAT location. The GBM light curve consists of two main peaks with a total duration of about 47.5 s (50-300keV). The time-averaged spectrum from T0-18 s to T0+39 s is well fit by a power law function with an exponential high-energy cutoff. The power law index is -1.37 +/- 0.15 and the cutoff energy, parameterized as Epeak, is 96 +/- 19 keV. The event fluence (10-1000 keV) in this time interval is (2.95 +/- 0.28)E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+0.58 s in the 10-1000 keV band is 2.9 +/- 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 16538 table
GRB_name GRB140706A
GCN_number 16538
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16538 SUBJECT: GRB 140706A: Swift-XRT refined Analysis DATE: 14/07/07 19:42:04 GMT FROM: Phil Evans at U of Leicester P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), M. de Pasquale (INAF-IASFPA), J.A. Kennea (PSU), V. Mangano (PSU), M.C. Stroh (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), B.P. Gompertz (U. Leicester) and F.E. Marshall report on behalf of the Swift-XRT team: We have analysed 4.6 ks of XRT data for GRB 140706A (Marshall et al. GCN Circ. 16531), from 62 s to 34.8 ks after the BAT trigger. The data comprise 56 s in Windowed Timing (WT) mode (the first 9 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 Beardmore et al. (GCN Circ. 16532). The light curve can be modelled with an initial power-law decay with an index of alpha=3.55 (+0.25, -0.26), followed by a break at T+219 s to an alpha of 0.62 (+/-0.06). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.84 (+0.20, -0.19). The best-fitting absorption column is 8.1 (+5.2, -4.6) x 10^20 cm^-2, in excess of the Galactic value of 2.2 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.6 x 10^-11 (4.1 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 8.1 (+5.2, -4.6) x 10^20 cm^-2 Galactic foreground: 2.2 x 10^20 cm^-2 Excess significance: 2.2 sigma Photon index: 1.84 (+0.20, -0.19) If the light curve continues to decay with a power-law decay index of 0.62, the count rate at T+24 hours will be 0.015 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 5.6 x 10^-13 (6.4 x 10^-13) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00603587. This circular is an official product of the Swift-XRT team.
GCN 16539 table
GRB_name GRB140706A
GCN_number 16539
Detection_method Swift-BAT Det
ra 49.2690°
decl -38.0580°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16539 SUBJECT: GRB 140706A: Swift-BAT refined analysis DATE: 14/07/07 21:30:48 GMT FROM: Takanori Sakamoto at AGU C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), F. E. Marshall (NASA/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 the recent telemetry downlink, we report further analysis of BAT GRB 140706A (trigger #603587) (Marshall, et al., GCN Circ. 16531). The BAT ground-calculated position is RA, Dec = 49.269, -38.058 deg which is RA(J2000) = 03h 17m 04.6s Dec(J2000) = -38d 03' 28.6" with an uncertainty of 1.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 77%. The mask-weighted light curve shows several peaks starting at ~T-20 sec, peaking at ~T-15, ~T+1 and ~T+28 sec, and ending at ~T+40 sec. T90 (15-350 keV) is 48.3 +- 4.3 sec (estimated error including systematics). The time-averaged spectrum from T-21.3 to T+39.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.8 +- 0.1. The fluence in the 15-150 keV band is 2.0 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-0.12 sec in the 15-150 keV band is 1.8 +- 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/603587/BA/
GCN 16541 table
GRB_name GRB140706A
GCN_number 16541
Detection_method Swift-UVOT Det
ra 49.2933°
decl -38.0522°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16541 SUBJECT: GRB 140706A: Swift/UVOT Detection DATE: 14/07/07 23:46:26 GMT FROM: Mike Siegel at PSU/Swift MOC M. H. Siegel (PSU) and F. E. Marshall (NASA/GSFC) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140706A 82 s after the BAT trigger (Marshall et al., GCN Circ. 16531). A fading source consistent with the XRT position (Beardmore et al. GCN Circ. 16532) is detected in the initial UVOT exposures. The preliminary UVOT position is: RA (J2000) = 03:17:10.39 = 49.29328 (deg.) Dec (J2000) = -38:03:07.8 = -38.05218 (deg.) with an estimated uncertainty of 0.45 arc sec. (radius, 90% confidence). Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white (fc) 82 232 147 19.04 +/- 0.06 white 573 1541 244 19.76 +/- 0.16 v 624 1592 117 >18.8 b 550 1517 97 >19.2 u (fc) 294 544 246 19.02 +/- 0.11 u 624 1591 116 >19.6 w1 674 1638 94 >19.1 w2 775 1394 58 >20.1 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.02 in the direction of the burst (Schlegel et al. 1998).