GRB140614B

This page lists all entries on GRB140614B in GRBweb

Summary IPN Swift GCN 16394 GCN 16395 GCN 16399 GCN 16400 GCN 16404 GCN 16405 GCN 16406 GCN 16407 GCN 16409

Summary table
Variable Value Source
T0 6:38:11 UTC GCN_circulars,Swift Det
ra 322.6313° Swift
decl 14.9298° Swift
pos_error 2.20e-04° Swift
T90 49.8 s Swift
T90_start 6:38:11 UTC Swift
fluence 5.50e-07 erg/cm² Swift
T100 49.8 s
GBM_located False
mjd 56822.2765162037 GCN_circulars,Swift Det
IPN table
GRB_name GRB140614B
ra 322.6250°
decl 14.9167°
pos_error 5.00e-02°
Swift table
GRB_name GRB140614B
t_trigger 6:38:11 UTC
ra 322.6313°
decl 14.9298°
pos_error 2.20e-04°
T90 49.8 s
fluence 5.50e-07 erg/cm²
GCN 16394 table
GRB_name GRB140614B
GCN_number 16394
Detection_method Swift Det
t_trigger 6:38:11 UTC
ra 322.6250°
decl 14.9200°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16394 SUBJECT: GRB 140614B: Swift detection of a burst DATE: 14/06/14 06:53:41 GMT FROM: Kim Page at U.of Leicester K. L. Page (U Leicester), J. R. Cummings (NASA/UMBC), N. P. M. Kuin (UCL-MSSL), T. Sakamoto (AGU) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 06:38:11 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140614B (trigger=601662). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 322.625, +14.920 which is RA(J2000) = 21h 30m 30s Dec(J2000) = +14d 55' 13" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single weak broad peak with a duration of about 35 sec. The peak count rate was ~1248 counts/sec (15-350 keV), at ~2 sec after the trigger. The XRT began observing the field at 06:40:16.9 UT, 125.2 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source with an enhanced position: RA, Dec 322.6313, 14.9299 which is equivalent to: RA(J2000) = 21h 30m 31.50s Dec(J2000) = +14d 55' 47.5" with an uncertainty of 2.1 arcseconds (radius, 90% containment). This location is 41 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 (8.06 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 3.7 (+2.77/-2.35) x 10^21 cm^-2 (90% confidence). The initial flux in the 2.5 s image was 1.21e-09 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 132 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 0.08. Burst Advocate for this burst is K. L. Page (kpa AT star.le.ac.uk). 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 16395 table
GRB_name GRB140614B
GCN_number 16395
Detection_method Swift-XRT Det
ra 322.6313°
decl 14.9297°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16395 SUBJECT: GRB 140614B: Enhanced Swift-XRT position DATE: 14/06/14 12:11:37 GMT FROM: Phil Evans at U of Leicester P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team. Using 1221 s of XRT Photon Counting mode data and 2 UVOT images for GRB 140614B, 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 = 322.63127, +14.92970 which is equivalent to: RA (J2000): 21h 30m 31.50s Dec (J2000): +14d 55' 46.9" 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 16399 table
GRB_name GRB140614B
GCN_number 16399
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16399 SUBJECT: GRB 140614B: RATIR Optical and NIR Observations DATE: 14/06/14 15:27:28 GMT FROM: Nat Butler at Az State U ---------- Forwarded message ---------- From: "Nat Butler" Date: Jun 14, 2014 7:32 AM Subject: GRB 140614B: RATIR Optical and NIR Observations To: "Nat Butler" Cc: 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 140614B (Page, et al., GCN 16394) 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 2014/06 14.28 to 2014/06 14.47 UTC (0.11 to 4.62 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, in comparison with 2MASS, we obtain the following upper limits (3-sigma): r > 22.70 i > 22.53 Z > 21.64 Y > 21.08 J > 21.04 H > 20.51 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 Astronómico Nacional in San Pedro Mártir.
GCN 16400 table
GRB_name GRB140614B
GCN_number 16400
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16400 SUBJECT: GRB 140614B: Swift/UVOT Upper Limits DATE: 14/06/14 15:28:38 GMT FROM: Paul Kuin at MSSL N. P. M. Kuin (UCL-MSSL) and K. L. Page (U Leicester) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140614B 132 s after the BAT trigger (Page et al., GCN Circ. 16394). No optical afterglow consistent with the XRT position (Evans et al. GCN Circ. 16395) 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 132 282 147 >21.0 u_FC 291 540 246 >20.4 white 132 6723 766 >22.2 v 621 7133 490 >20.1 b 546 6518 471 >20.9 u 291 6314 697 >20.8 w1 670 6108 293 >20.5 m2 1073 7222 298 >20.1 w2 597 6929 471 >21.0 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.08 in the direction of the burst (Schlegel et al. 1998).
GCN 16404 table
GRB_name GRB140614B
GCN_number 16404
Detection_method Swift-BAT Det
ra 322.6360°
decl 14.8950°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16404 SUBJECT: GRB 140614B: Swift-BAT refined analysis DATE: 14/06/14 21:16:24 GMT FROM: Scott Barthelmy at NASA/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), C. B. Markwardt (GSFC), D. M. Palmer (LANL), K. L. Page (U Leicester), 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-240 to T+962 sec from recent telemetry downlinks, we report further analysis of BAT GRB 140614B (trigger #601662) (Page, et al., GCN Circ. 16394). The BAT ground-calculated position is RA, Dec = 322.636, 14.895 deg, which is RA(J2000) = 21h 30m 32.6s Dec(J2000) = +14d 53' 41.5" with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 71%. The mask-weighted light curve shows a FRED pulse starting at ~T0, peaking at ~T+5 sec, and ending at ~T+75 sec. T90 (15-350 keV) is 49.8 +- 7.9 sec (estimated error including systematics). The time-averaged spectrum from T-3.28 to T+55.59 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.04 +- 0.26. The fluence in the 15-150 keV band is 5.5 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+6.93 sec in the 15-150 keV band is 0.5 +- 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/601662/BA/
GCN 16405 table
GRB_name GRB140614B
GCN_number 16405
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 16405 SUBJECT: GRB 140614B: MITSuME Okayama upper limits DATE: 14/06/15 01:44:49 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of MITSuME collaboration: We observed the field of GRB 160614B (Page et al., GCNC 16394) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory. The observation started on 2014-06-14 16:44:18 (~10.1 h after the burst). We did not find any new point source within the enhanced XRT circle (Evans et al., GCNC 16395) in all the three bands. Three sigma upper limits of the OT are listed below. We used GSC 2.3 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' Rc Ic ----------------------------------------------------- 0.46713 17:50:51 6060.0 >19.2 >19.3 >18.6 ----------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 16406 table
GRB_name GRB140614B
GCN_number 16406
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16406 SUBJECT: GRB 140614B: Swift-XRT refined Analysis DATE: 14/06/15 03:53:04 GMT FROM: Phil Evans at U of Leicester B. Sbarufatti (INAF-OAB/PSU), V. Mangano (PSU), M.C. Stroh (PSU), D.N. Burrows (PSU), C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC) and K.L. Page report on behalf of the Swift-XRT team: We have analysed 7.8 ks of XRT data for GRB 140614B (Page et al. GCN Circ. 16394), from 115 s to 52.7 ks after the BAT trigger. The data comprise 86 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 Evans et al. (GCN Circ. 16395). The light curve can be modelled with an initial power-law decay with an index of alpha=1.35 (+/-0.13), followed by a break at T+515 s to an alpha of 3.93 (+0.28, -0.26). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 0.99 (+0.20, -0.18). The best-fitting absorption column is 3.6 (+2.1, -1.6) x 10^21 cm^-2, in excess of the Galactic value of 8.1 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.46 (+0.19, -0.18) and a best-fitting absorption column of 2.3 (+1.0, -0.9) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 5.1 x 10^-11 (5.9 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 2.3 (+1.0, -0.9) x 10^21 cm^-2 Galactic foreground: 8.1 x 10^20 cm^-2 Excess significance: 2.9 sigma Photon index: 1.46 (+0.19, -0.18) If the light curve continues to decay with a power-law decay index of 3.93, the count rate at T+24 hours will be 3.7 x 10^-9 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.9 x 10^-19 (2.2 x 10^-19) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00601662. This circular is an official product of the Swift-XRT team.
GCN 16407 table
GRB_name GRB140614B
GCN_number 16407
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 16407 SUBJECT: GRB 140614B: MITSuME Akeno upper limits DATE: 14/06/15 13:07:16 GMT FROM: Taketoshi Yoshii at Tokyo Tech S. Kurita, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi, Y. Yano, Y. Ono, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 140614B (K. L. Page et al., GCN Circular #16394) with the optical three color (g, Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation started on 2014-06-14 14:18:14 UT ( 7.7h after the burst). We did not find any new point source within XRT circle in all the three bands. The measured magnitudes were listed below. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic 27602 16:26:47 14280 >19.7 >19.8 >18.9 T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 16409 table
GRB_name GRB140614B
GCN_number 16409
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16409 SUBJECT: GRB 140614B: MOSFIRE Ks-band nondetection DATE: 14/06/15 15:25:35 GMT FROM: Daniel Perley at Caltech D. A. Perley (Caltech) reports: I imaged the field of GRB 140614B (Page et al., GCN 16394) using MOSFIRE on the Keck I 10m telescope in the Ks-band filter. A sequence of 12 36-second images was obtained at a midtime of 13:18 UT on 2014-06-15 (1.27 days after the Swift trigger). No sources are detected within the XRT error circle (Evans et al, GCN 16395) to a limiting mag of approximately Ks > 21.9 mag (3-sigma, calibrating relative to 2MASS.) A faint source (Ks = 21.5 +/- 0.2 mag) is detected outside the XRT error circle, at a position of RA = 21:30:31.364, dec = +14:55:48.79 (J2000).