GRB140710A

This page lists all entries on GRB140710A in GRBweb

Summary IPN Swift GCN 16563 GCN 16565 GCN 16566 GCN 16567 GCN 16568 GCN 16569 GCN 16570 GCN 16572 GCN 16573 GCN 16574 GCN 16582

Summary table
Variable Value Source
T0 10:16:40 UTC GCN_circulars,Swift Det
ra 41.0678° Swift
decl 35.4992° Swift
pos_error 1.94e-04° Swift
T90 3.52 s Swift
T90_start 10:16:40 UTC Swift
fluence 2.30e-07 erg/cm² Swift
redshift 0.5580 GCN_circulars,Other
T100 3.52 s
GBM_located False
mjd 56848.42824074074 GCN_circulars,Swift Det
IPN table
GRB_name GRB140710A
ra 41.0875°
decl 35.5000°
pos_error 5.00e-02°
redshift 0.5580
Swift table
GRB_name GRB140710A
t_trigger 10:16:40 UTC
ra 41.0678°
decl 35.4992°
pos_error 1.94e-04°
T90 3.52 s
fluence 2.30e-07 erg/cm²
redshift 0.5580
GCN 16563 table
GRB_name GRB140710A
GCN_number 16563
Detection_method Swift Det
t_trigger 10:16:40 UTC
ra 41.0870°
decl 35.4930°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16563 SUBJECT: GRB 140710A: Swift detection of a burst DATE: 14/07/10 10:32:36 GMT FROM: David Palmer at LANL M. H. Siegel (PSU), D. N. Burrows (PSU), M. M. Chester (PSU), H. A. Krimm (CRESST/GSFC/USRA), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Swift Team: At 10:16:40 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140710A (trigger=603954). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 41.087, +35.493 which is RA(J2000) = 02h 44m 21s Dec(J2000) = +35d 29' 36" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single-peaked structure with a duration of about 5 sec. The peak count rate was ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger. The XRT began observing the field at 10:18:18.4 UT, 98.4 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source with an enhanced position: RA, Dec 41.0678, 35.4994 which is equivalent to: RA(J2000) = 02h 44m 16.27s Dec(J2000) = +35d 29' 57.9" with an uncertainty of 2.2 arcseconds (radius, 90% containment). This location is 60 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. We cannot determine whether the source is fading at the present time. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (7.15 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 7.8 (+5.32/-4.24) 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 0.06. Burst Advocate for this burst is M. H. Siegel (siegel AT swift.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 16565 table
GRB_name GRB140710A
GCN_number 16565
Detection_method GROND
ra 41.0679°
decl 35.4857°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16565 SUBJECT: GRB 140710A: GROND Detection of NIR Afterglow Candidate DATE: 14/07/10 12:11:39 GMT FROM: Jochen Greiner at MPI M. Tanga, C. Delvaux and J. Greiner (all MPE Garching) report on behalf of the GROND team: We observed the field of GRB 140710A (Swift trigger 603954; Siegel et al., GCN #16563) simultaneously in 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 10:48 UT on 2014-07-10, 0.5 hrs after the GRB trigger, but already in morning twilight and thus without the optical GROND channels. Observations were performed at an average seeing of 1.5" and at an average airmass of 2.6. We found a single point source within the 2.2" Swift-XRT error circle reported by Siegel et al. (GCN #16563) at RA (J2000) = 02 h 44 m 16.30 s DEC (J2000) = +35d 29' 08.4 with an uncertainty of 0.5" in each coordinate. Based on 4 min of total exposure we estimate a preliminary magnitude of about J(AB) ~ 20.5 mag The given magnitude is calibrated against 2MASS field stars and is not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.06 mag in the direction of the burst (Schlegel et al. 1998).
GCN 16566 table
GRB_name GRB140710A
GCN_number 16566
Detection_method correction
ra 41.0679°
decl 35.4992°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16566 SUBJECT: GRB 140710A: correction to GCN #16565 DATE: 14/07/10 13:21:04 GMT FROM: Corentin Delvaux at MPE C. Delvaux (MPE Garching) reports: The coordinates in GCN #16565 should read: RA (J2000) = 02 h 44 m 16.30 s DEC (J2000) = +35d 29' 57.1 Sorry for any confusion caused by this mistake.
GCN 16567 table
GRB_name GRB140710A
GCN_number 16567
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16567 SUBJECT: GRB 140710A: P60 Confirmation of Afterglow DATE: 14/07/10 14:35:19 GMT FROM: S. Bradley Cenko at NASA/GSFC S. B. Cenko (NASA/GSFC) and D. A. Perley (Caltech) report on behalf of a larger collaboration: We observed the location of GRB140710A (Siegel et al., GCN 16563) with the robotic Palomar 60 inch telescope. Observations were obtained in the r', i', and z' filters beginning 3.1 minutes after the Swift trigger time. We detect a faint source within the XRT error circle in all three filters, roughly consistent with the location of the candidate reported by GROND (Tanga et al., GCNs 16565; Delvaux, GCN 16566). Using several nearby point sources from the APASS catalog for calibration, we measure the following AB magnitudes: r' = 19.90 at dt = 3.6 min i' = 19.80 at dt = 5.0 min Over the course of the first hour following the Swift trigger time, the source fades by >~ 1.0 mag in r', confirming that it is indeed the optical afterglow of GRB140710A.
GCN 16568 table
GRB_name GRB140710A
GCN_number 16568
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16568 SUBJECT: GRB 140710A: RATIR Optical and NIR Observations DATE: 14/07/10 14:37:42 GMT FROM: Nat Butler at Az State U Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William 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), José A. de Diego (UNAM), Leonid Georgiev (UNAM), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report: We observed the field of GRB 140710A (Siegel, et al., GCN 16563) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astronómico Nacional on Sierra San Pedro Mártir from 2014/07 10.43 to 2014/07 10.47 UTC (3.6 minutes to 1.12 hours after the BAT trigger), obtaining a total of 0.71 hours exposure in the r and i bands and 0.30 hours exposure in the Z, Y, J, and H bands. For a source within the Swift-XRT error circle (see also, Castro-Tirado, et al., GCN 16564; Tanga, et al., GCN 16565), in comparison with 2MASS, we obtain the following detections: r 21.36 +/- 0.08 i 21.10 +/- 0.07 Z 20.77 +/- 0.14 Y 20.42 +/- 0.16 J 20.31 +/- 0.14 H 19.75 +/- 0.13 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. The source appears to fade in all bands. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.
GCN 16569 table
GRB_name GRB140710A
GCN_number 16569
Detection_method Swift-XRT Det
ra 41.0677°
decl 35.4991°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16569 SUBJECT: GRB 140710A: Enhanced Swift-XRT position DATE: 14/07/10 15:44:28 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 528 s of XRT Photon Counting mode data and 1 UVOT images for GRB 140710A, 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 = 41.06775, +35.49908 which is equivalent to: RA (J2000): 02h 44m 16.26s Dec (J2000): +35d 29' 56.7" 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 16570 table
GRB_name GRB140710A
GCN_number 16570
Detection_method Other
redshift 0.5580
Circular_text TITLE: GCN CIRCULAR NUMBER: 16570 SUBJECT: GRB 140710A: Gemini-N redshift of likely host DATE: 14/07/10 15:44:55 GMT FROM: Nial Tanvir at U.Leicester N. R. Tanvir (U. Leicester), A. J. Levan (U. Warwick) and D. Coulson (Gemini) report: We observed the position of GRB 140710A (Siegel et al. GCN 16563; Tanga et al. GCN 16565/6; Cenko et al. GCN 16567; Butler et al. GCN 16568) with the GMOS-N spectrograph on Gemini-North. Observations began at 14:06 UT, approximately 3.8 hr post burst. The spectrum shows a faint continuum and emission lines of OII (3727), Hbeta (4863) and OIII (4959/5007) at a common redshift of z=0.558. There is also some evidence for a 4000A break at the same redshift. Given the fading nature already reported, and the slight extension of the source in the acquisition images, it is very likely that this is the redshift of the GRB host galaxy, and that it is already comparable to the afterglow brightness.
GCN 16572 table
GRB_name GRB140710A
GCN_number 16572
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16572 SUBJECT: GRB 140710A: Swift/UVOT Upper Limits DATE: 14/07/10 20:28:33 GMT FROM: Samantha Oates at MSSL S. R. Oates (IAA-CSIC/UCL-MSSL) and M. H. Siegel (PSU) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140710A 103 s after the BAT trigger (Siegel et al., GCN Circ. 16563). No optical afterglow consistent with the optical position (Delvaux et al., GCN Circ. 16566, Tanga et al., GCN Circ. 16565) or the enhanced XRT position (Osborne et al., GCN Circ. 16569) 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 103 253 147 >20.1 u_FC 315 565 246 >19.2 white 103 5830 363 >20.7 v 644 16380 1090 >19.8 b 570 12165 806 >20.3 u 315 11556 1376 >20.5 w1 4153 17926 1706 >20.7 m2 3948 17285 1245 >20.8 w2 620 6035 216 >19.7 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.06 in the direction of the burst (Schlegel et al. 1998).
GCN 16573 table
GRB_name GRB140710A
GCN_number 16573
Detection_method Swift-BAT Det
ra 41.0880°
decl 35.4990°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16573 SUBJECT: GRB 140710A: Swift-BAT refined analysis DATE: 14/07/10 21:46:28 GMT FROM: Hans Krimm at NASA-GSFC T. Sakamoto (AGU), 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), C. B. Markwardt (GSFC), D. M. Palmer (LANL), M. H. Siegel (PSU), 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 140710 (trigger #603954) (Siegel, et al., GCN Circ. 16563). The BAT ground-calculated position is RA, Dec = 41.088, 35.499 deg which is RA(J2000) = 02h 44m 21.0s Dec(J2000) = +35d 29' 54.8" with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 58%. The mask-weighted light curve shows a single peak of duration ~4 seconds, starting at T0. T90 (15-350 keV) is 3.52 +- 0.91 sec (estimated error including systematics). The time-averaged spectrum from T-0.23 to T+3.80 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.00 +- 0.23. The fluence in the 15-150 keV band is 2.3 +- 0.3 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+0.04 sec in the 15-150 keV band is 1.9 +- 0.3 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/603954/BA/
GCN 16574 table
GRB_name GRB140710A
GCN_number 16574
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16574 SUBJECT: GRB 140710A: Swift-XRT refined Analysis DATE: 14/07/10 22:32:04 GMT FROM: Phil Evans at U of Leicester D.N. Burrows (PSU), J.A. Kennea (PSU), V. Mangano (PSU), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), C. Pagani (U. Leicester), A. Maselli (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU) and M.H. Siegel report on behalf of the Swift-XRT team: We have analysed 9.4 ks of XRT data for GRB 140710A (Siegel et al. GCN Circ. 16563), from 83 s to 23.7 ks after the BAT trigger. The data comprise 8 s in Windowed Timing (WT) mode (taken while Swift was slewing), with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 16569). The late-time light curve (from T0+3.9 ks) can be modelled with a power-law decay with a decay index of alpha=0.8 (+/-0.3). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.98 (+0.20, -0.19). The best-fitting absorption column is 3.2 (+0.9, -0.8) x 10^21 cm^-2, in excess of the Galactic value of 7.2 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 3.8 x 10^-11 (5.6 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 3.2 (+0.9, -0.8) x 10^21 cm^-2 Galactic foreground: 7.2 x 10^20 cm^-2 Excess significance: 5.1 sigma Photon index: 1.98 (+0.20, -0.19) If the light curve continues to decay with a power-law decay index of 0.8, the count rate at T+24 hours will be 3.2 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.2 x 10^-13 (1.8 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/00603954. This circular is an official product of the Swift-XRT team.
GCN 16582 table
GRB_name GRB140710A
GCN_number 16582
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16582 SUBJECT: GRB 140710A: iTelescope.Net T11 Optical Observation DATE: 14/07/13 20:00:23 GMT FROM: Takanori Sakamoto at AGU D. Kawamura, T. Sakamoto, A. Yoshida (AGU) We observed the field of GRB 140710A detected by Swift (trigger #603954; Siegel et al., GCN Circ. 16563) with the iTelescope.Net (http://www.itelescope.net) T11 (0.51 m Planewave) telescope located at the New Mexico Skies Observatory (NM, USA). 20 images of 60 sec exposures were taken in the R filter starting from July 10 10:35:00 (UT) about 18 minutes after the trigger and stopped on July 10 10:58:30 (UT). We do not detect the optical afterglow both in the individual images and the stacked image at the enhanced X-ray afterglow position (Osborne et al., GCN Circ. 16569). The estimated five sigma upper limit of the combined image (total exposure of 1200 sec) is ~19.5 using the USNO-B1 catalog.