GRB141005A

This page lists all entries on GRB141005A in GRBweb

Summary Fermi GBM IPN Swift GCN 16882 GCN 16884 GCN 16885 GCN 16888 GCN 16889 GCN 16893 GCN 16894 GCN 16895 GCN 16897 GCN 16898 GCN 16901 GCN 16903

Summary table
Variable Value Source
GRB_name_Fermi GRB141005217
T0 5:13:06 UTC GCN_circulars,Swift Det
ra 291.0931° Swift
decl 36.0950° Swift
pos_error 1.94e-04° Swift
T90 3.392 s Fermi_GBM
T90_error 0.264 s Fermi_GBM
T90_start 5:13:06.968 UTC Fermi_GBM
fluence 2.50e-06 erg/cm² Fermi_GBM
fluence_error 2.70e-08 erg/cm² Fermi_GBM
T100 4.36 s
GBM_located False
mjd 56935.21743055555 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB141005217
trigger_name bn141005217
ra 291.0929°
decl 36.0953°
pos_error 3.28e+00°
datum 2014-10-05
t_trigger 5:13:06.968 UTC
T90 3.392 s
T90_error 0.264 s
T90_start 5:13:06.968 UTC
fluence 2.50e-06 erg/cm²
fluence_error 2.70e-08 erg/cm²
flux_1024 7.63e+00 erg/cm²/s
flux_1024_error 3.81e-01 erg/cm²/s
flux_1024_time 1.47e+00 erg/cm²/s
flux_64 9.88e+00 erg/cm²/s
flux_64_error 1.70e+00 erg/cm²/s
IPN table
GRB_name GRB141005A
ra 291.1083°
decl 36.0667°
pos_error 5.00e-02°
Swift table
GRB_name GRB141005A
t_trigger 5:13:06 UTC
ra 291.0931°
decl 36.0950°
pos_error 1.94e-04°
T90 4.34 s
fluence 1.10e-06 erg/cm²
GCN 16882 table
GRB_name GRB141005A
GCN_number 16882
Detection_method Swift Det
t_trigger 5:13:06 UTC
ra 291.1080°
decl 36.0690°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16882 SUBJECT: GRB 141005A: Swift detection of a burst DATE: 14/10/05 05:27:58 GMT FROM: Scott Barthelmy at NASA/GSFC V. D'Elia (ASDC), S. D. Barthelmy (GSFC), L. Izzo (URoma/ICRA), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 05:13:06 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 141005A (trigger=614415). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 291.108, +36.069, which is RA(J2000) = 19h 24m 26s Dec(J2000) = +36d 04' 10" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single peak 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 05:14:39.5 UT, 92.9 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source located at RA, Dec 291.09313, 36.09517 which is equivalent to: RA(J2000) = 19h 24m 22.35s Dec(J2000) = +36d 05' 42.6" with an uncertainty of 3.8 arcseconds (radius, 90% containment). This location is 103 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. A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 1.56 x 10^21 cm^-2 (Willingale et al. 2013). UVOT took a finding chart exposure of 250 seconds with the U filter starting 93 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 18.0 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.17. Burst Advocate for this burst is V. D'Elia (delia AT asdc.asi.it). 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 16884 table
GRB_name GRB141005A
GCN_number 16884
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 16884 SUBJECT: GRB 141005A: P60 probable afterglow deteaction DATE: 14/10/05 06:53:57 GMT FROM: Daniel Perley at Caltech D. A. Perley (Caltech) reports on behalf of a larger collaboration: The Palomar 60-inch robotic telescope automatically triggered on the Swift-BAT alert for GRB 141005A (GCN 16882, D'Elia et al.) and began observations of the field at 05:16:28 UT, 202 seconds after the BAT trigger. A sequence of cycling 60-second r, i, and z band images were acquired, ending at 05:33:20 UT. In the initial images we identify a source inside the SPER XRT error circle at the following position: RA = 19:24:22.392 dec = +36:05:42.26 (J2000, +/- 0.3") The source is faint and probably fading, from r = 20.6 +/- 0.2 and i = 20.0 +/- 0.2 in the initial exposures to r = 21.4 +/- 0.3 and i = 21.3 +/- 0.4 in the final exposures. The source is also present in archival imaging of the field from SDSS. Measuring the flux of the source in the same aperture in these images yields magnitudes of g=21.9, r=21.6, i=21.3, z=20.7. These observations suggest a faint optical afterglow superimposed on a host galaxy or Galactic foreground star. More observations are encouraged to characterize this object.
GCN 16885 table
GRB_name GRB141005A
GCN_number 16885
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 16885 SUBJECT: GRB 141005A: RATIR Optical Observations DATE: 14/10/05 07:29:03 GMT FROM: Owen Littlejohns at Az State U Owen Littlejohns (ASU), 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), 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 141005A (D'Elia, et al., GCN 16882) 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 2014/10 5.22 to 2014/10 5.27 UTC (0.05 to 1.34 hours after the BAT trigger), obtaining a total of 1.07 hours exposure in the r and i bands. We note evidence of the source reported by P60 (Perley, et al., GCN 16884), with marginal evidence for fading throughout the epoch of RATIR observations. Further analysis is ongoing. We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.
GCN 16888 table
GRB_name GRB141005A
GCN_number 16888
Detection_method Swift-XRT Det
ra 291.0932°
decl 36.0950°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16888 SUBJECT: GRB 141005A: Enhanced Swift-XRT position DATE: 14/10/05 10:38:56 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 2816 s of XRT Photon Counting mode data and 3 UVOT images for GRB 141005A, 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 = 291.09317, +36.09496 which is equivalent to: RA (J2000): 19h 24m 22.36s Dec (J2000): +36d 05' 41.9" 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 16889 table
GRB_name GRB141005A
GCN_number 16889
Detection_method Fermi GBM Det
t_trigger 5:13:06.970 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16889 SUBJECT: GRB 141005A: Fermi GBM Detection DATE: 14/10/05 15:32:52 GMT FROM: Oliver Roberts at UCD/Fermi O. Roberts (UCD) reports on behalf of the Fermi GBM Team: "At 05:13:06.97 UT on the 5th of October 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 141005A (trigger 434178789 / 141005217) which was also detected by Swift (V. D'Elia et al. 2014, GCN 16682). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 107 degrees. The GBM light curve shows a single pulse with a duration (T90) of about 3 seconds (50-300 keV). The time-averaged spectrum from T0-0.26 s to T0+3.07 s is best fit by a power law function with an exponential high-energy cutoff. The power law index is -0.30 +/- 0.11 and the cutoff energy, parameterised as Epeak, is 138 +/- 8 keV. A Band function fits the spectrum equally well with Epeak= 119 +/- 10 keV, alpha = -0.06 +/- 0.2 and beta = -2.7 +/- 0.3. The event fluence (10-1000 keV) in this time interval is 2.6 E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+1.5 seconds in the 10-1000 keV band is 3.7 +/- 0.2 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalogue." --------------------------------------------------------------------------------------------------------------------------------------------- Dr. Oliver J. Roberts BSc PhD Space Science and Advanced Materials Research Group, School of Physics, University College Dublin, Belfield, Dublin 4, Ireland +353(0)1-716-2202
GCN 16893 table
GRB_name GRB141005A
GCN_number 16893
Detection_method Swift-BAT Det
ra 291.1030°
decl 36.0980°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16893 SUBJECT: GRB 141005A: Swift-BAT refined analysis DATE: 14/10/05 17:19:05 GMT FROM: Scott Barthelmy at NASA/GSFC H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), V. D'Elia (ASDC), N. Gehrels (GSFC), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (LANL) (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 141005A (trigger #614415) (D'Elia, et al., GCN Circ. 16882). The BAT ground-calculated position is RA, Dec = 291.103, 36.098 deg, which is RA(J2000) = 19h 24m 24.7s Dec(J2000) = +36d 05' 54.1" with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 6%. The mask-weighted light curve shows a single peak starting at ~T-1 sec, peaking at ~T+2 sec, and ending at ~T+7 sec. T90 (15-350 keV) is 4.34 +- 1.08 sec (estimated error including systematics). The time-averaged spectrum from T+0.19 to T+5.66 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.33 +- 0.18. The fluence in the 15-150 keV band is 1.1 +- 0.1 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.68 sec in the 15-150 keV band is 4.2 +- 0.8 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/614415/BA/
GCN 16894 table
GRB_name GRB141005A
GCN_number 16894
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16894 SUBJECT: GRB 141005A: Swift/UVOT Upper Limits DATE: 14/10/05 17:20:24 GMT FROM: Paul Kuin at MSSL N. P. M. Kuin (UCL-MSSL) and V. D'Elia (ASDC) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 141005A 94 s after the BAT trigger (D'Elia et al., GCN Circ. 16882). This GRB was observed also by Fermi GBM (Roberts, GCN Circ. 16889), and in the r and i bands (P60: Perley et al., GCN Circ. 16884, RATIR: Littlejohn et al.,GCN Circ. 16885). A nearby galaxy was reported by Perley et al., and is also seen in the UVOT images. No optical afterglow consistent with the XRT position (Beardmore et al. GCN Circ. 16888), or the P60 position is detected in the initial UVOT exposures, although the event data for the UVOT b-band show a slight brightening peaking around T+700s.. 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 u_FC 94 344 246 >20.1 v 5960 7392 393 >19.4 b 349 6980 639 >20.2 u 94 6775 786 >20.6 w1 5138 6570 393 >19.9 m2 4932 7445 441 >20.2 w2 5754 7186 393 >20.6 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.17 in the direction of the burst (Schlegel et al. 1998).
GCN 16895 table
GRB_name GRB141005A
GCN_number 16895
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16895 SUBJECT: GRB 141005A: Swift-XRT refined Analysis DATE: 14/10/05 17:28:03 GMT FROM: Phil Evans at U of Leicester M.C. Stroh (PSU), B.P. Gompertz (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), M. de Pasquale (INAF-IASFPA), A. Maselli (INAF-IASFPA), A. Melandri (INAF-OAB), D.N. Burrows (PSU), J.A. Kennea (PSU) and V. D'Elia report on behalf of the Swift-XRT team: We have analysed 10 ks of XRT data for GRB 141005A (D'Elia et al. GCN Circ. 16882), from 79 s to 29.1 ks after the BAT trigger. The data comprise 120 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 Beardmore et al. (GCN Circ. 16888). The light curve can be modelled with a power-law decay with a decay index of alpha=1.33 (+/-0.06). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.03 (+0.23, -0.21). The best-fitting absorption column is 3.3 (+1.0, -0.9) x 10^21 cm^-2, in excess of the Galactic value of 1.6 x 10^21 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.7 x 10^-11 (5.7 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 3.3 (+1.0, -0.9) x 10^21 cm^-2 Galactic foreground: 1.6 x 10^21 cm^-2 Excess significance: 3.2 sigma Photon index: 2.03 (+0.23, -0.21) If the light curve continues to decay with a power-law decay index of 1.33, the count rate at T+24 hours will be 3.4 x 10^-4 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.3 x 10^-14 (1.9 x 10^-14) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00614415. This circular is an official product of the Swift-XRT team.
GCN 16897 table
GRB_name GRB141005A
GCN_number 16897
Detection_method Konus-Wind Det
t_trigger 5:13:07.727 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 16897 SUBJECT: Konus-Wind observation of GRB 141005A DATE: 14/10/06 18:30:02 GMT FROM: Anastasia Tsvetkova at Ioffe Institute S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A. Lysenko, and T. Cline on behalf of the Konus-Wind team, report: The long-duration GRB 141005A (Swift-BAT trigger 614415: D'Elia, GCN 16882; Krimm et al., GCN 16893; Fermi-GBM detection: Roberts, GCN 16889) triggered Konus-Wind at T0=18787.727 s UT (05:13:07.727). The burst light curve shows a single pulse with a duration of ~3 s. The emission is seen up to ~1 MeV. As observed by Konus-Wind, the burst had a fluence of 2.3(-0.2,+0.3)x10^-6 erg/cm2, and a 64-ms peak energy flux, measured from T0+0.390 s, of 1.6(-0.5,+0.5)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum of the burst (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 1 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -0.34(-0.49,+0.58), and Ep = 104(-14,+18) keV (chi2 = 33/55 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -2.37 (chi2 = 31/54 dof). The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB141005_T18787/ All the quoted errors are at the 90% confidence level. All the quoted values are preliminary.
GCN 16898 table
GRB_name GRB141005A
GCN_number 16898
Detection_method GROND
Circular_text TITLE: GCN CIRCULAR NUMBER: 16898 SUBJECT: GRB 141005A: GROND observations DATE: 14/10/06 19:22:24 GMT FROM: Sebastian Schmidl at TLS Tautenburg S. Schmidl (TLS Tautenburg), J. F. Graham, and J. Greiner (both MPE Garching) report on behalf of the GROND team: We observed the field of GRB 141005A (Swift trigger 614415; V. D'Elia et al., GCN #16882) 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). We detect a source consistant with the position reported by Perley et al. (GCN #16884). From coadded observations, starting on October 05 and spanning from 23:50 to 00:04 UT, we report the following preliminary magnitudes and upper limits (AB magnitude system) of: g' > 21.6, r' = 21.7 +/- 0.2, i' = 21.7 +/- 0.2, z' = 21.2 +/- 0.2, J > 20.5, H > 19.9, and K > 18.2. Given magnitudes and upper limits are calibrated against SDSS as well as 2MASS field stars and are not corrected for the expected Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.17 mag in the direction of the burst (Schlegel et al. 1998).
GCN 16901 table
GRB_name GRB141005A
GCN_number 16901
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16901 SUBJECT: GRB 141005A: Additional P60 imaging and afterglow confirmation DATE: 14/10/07 06:04:59 GMT FROM: Daniel Perley at Caltech S. B. Cenko (NASA/GSFC) and D. A. Perley (Caltech) report: We obtained a second epoch of imaging at the location of the optical afterglow (Perley et al., GCN 16884; Littlejohns et al., GCN 16885; Schmidl et al., GCN 16898) of GRB 141005A (D'Elia et al., GCN 16882) with the robotic Palomar 60 inch telescope. Observations were obtained in the r', i', and z' filters beginning at 2:31 UT on 2014 October 6 (0.89 d after the burst). A source is clearly detected at the location of the afterglow candidate originally reported in GCN 16884 (Perley et al). As noted therein, a source is also present at this location in pre-outburst SDSS imaging of this field. To search for variability at this location, we performed digital image subtraction with the P60 data, using the images from 2014 October 6 as a reference template. We find clear evidence for fading in the i-band (and marginal evidence in r and z-bands), confirming that this source is indeed the optical afterglow of GRB 141005A but is blended with a bright (i' ~ 21.7 mag) host galaxy or foreground object. Assuming no contribution of the afterglow to our template images, we measure i' = 20.24 +/- 0.10 at 5:18 UT on 2014 October 5 (i.e., 5 min after the Swift trigger).
GCN 16903 table
GRB_name GRB141005A
GCN_number 16903
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16903 SUBJECT: GRB 141005A: iTelescope.Net T21 Optical Observation DATE: 14/10/07 12:57:06 GMT FROM: Takanori Sakamoto at AGU D. Kawamura, T. Sakamoto, A. Yoshida (AGU) We observed the field of GRB 141005A detected by Swift (trigger #614415; D'Elia et al., GCN Circ. 16882) with the iTelescope.Net (http://www.itelescope.net) T21 (0.43 m Planewave) telescope located at the New Mexico Skies Observatory (NM, USA). 60 images of 20 sec exposures and 20 images of 60 sec exposures were taken in the R filter starting from October 5 05:27:55 (UT) about 15 minutes after the trigger and stopped on October 5 06:33:49 (UT). We do not detect the optical afterglow both in the individual images and the stacked image at the enhanced X-ray afterglow position (Beardmore et al., GCN Circ. 16888). The estimated five sigma upper limit of the combined image (total exposure of 2400 sec) is ~18.4 using the USNO-B1 catalog.