GRB141015A

This page lists all entries on GRB141015A in GRBweb

Summary IPN Swift GCN 16909 GCN 16910 GCN 16911 GCN 16912 GCN 16913 GCN 16914 GCN 16915 GCN 16916 GCN 16917 GCN 16918 GCN 16923 GCN 16925 GCN 16940 GCN 17066

Summary table
Variable Value Source
T0 9:12:59 UTC GCN_circulars,Swift Det
ra 87.5186° Swift
decl 18.3299° Swift
pos_error 2.33e-04° Swift
T90 11.0 s Swift
T90_start 9:12:59 UTC Swift
fluence 1.60e-07 erg/cm² Swift
T100 11.0 s
GBM_located False
mjd 56945.3840162037 GCN_circulars,Swift Det
IPN table
GRB_name GRB141015A
ra 87.5083°
decl 18.3167°
pos_error 5.00e-02°
Swift table
GRB_name GRB141015A
t_trigger 9:12:59 UTC
ra 87.5186°
decl 18.3299°
pos_error 2.33e-04°
T90 11.0 s
fluence 1.60e-07 erg/cm²
GCN 16909 table
GRB_name GRB141015A
GCN_number 16909
Detection_method Swift Det
t_trigger 9:12:59 UTC
ra 87.5070°
decl 18.3160°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16909 SUBJECT: GRB 141015A: Swift detection of a burst DATE: 14/10/15 09:26:18 GMT FROM: Scott Barthelmy at NASA/GSFC E. Troja (NASA/GSFC/UMCP), S. D. Barthelmy (GSFC), M. M. Chester (PSU), P. A. Evans (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL), J. L. Racusin (NASA/GSFC) and R. L. C. Starling (U Leicester) report on behalf of the Swift Team: At 09:12:59 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 141015A (trigger=615399). Swift did not slew because of Moon constraint. The BAT on-board calculated location is RA, Dec 87.507, +18.316 which is RA(J2000) = 05h 50m 02s Dec(J2000) = +18d 18' 57" 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 10 sec. The peak count rate was ~800 counts/sec (15-350 keV), at ~0 sec after the trigger. Due to a Moon observing constraint, Swift cannot slew to the BAT position until 15:56 UT on 2014 October 15. There will thus be no XRT or UVOT data for this trigger before this time. Burst Advocate for this burst is E. Troja (eleonora.troja AT 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 16910 table
GRB_name GRB141015A
GCN_number 16910
Detection_method Swift-XRT Other
ra 87.5175°
decl 18.3297°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16910 SUBJECT: GRB 141015A: Swift/XRT localization DATE: 14/10/15 15:39:14 GMT FROM: Scott Barthelmy at NASA/GSFC E. Troja (NASA/GSFC/UMCP), S. D. Barthelmy (GSFC), M. M. Chester (PSU), P. A. Evans (U Leicester), J. A. Kennea (PSU), K. L. Page (U Leicester), D. M. Palmer (LANL), J. L. Racusin (NASA/GSFC), M. H. Siegel (PSU) and R. L. C. Starling (U Leicester) report on behalf of the Swift Team: At 09:12:59 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 141015A (trigger=615399). The position was reloaded up to Swift using the "grb" mode of the TOO command (now that the location is out of Moon constraint). As such, Swift responds by generating the standard set of real-time TDRSS messages (and hence the GCN Notices). We are issuing this Circular with the results from XRT and UVOT. The XRT began observing the field at 15:07:56.6 UT, 21297.3 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 87.51746, 18.32965 which is equivalent to: RA(J2000) = 05h 50m 04.19s Dec(J2000) = +18d 19' 46.7" with an uncertainty of 4.0 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 consistent with the Galactic value of 5.59 x 10^21 cm^-2 (Willingale et al. 2013). UVOT took a finding chart exposure of 150 seconds with the White filter starting 21238 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 large, but uncertain extinction expected. Burst Advocate for this burst is E. Troja (eleonora.troja AT 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 16911 table
GRB_name GRB141015A
GCN_number 16911
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16911 SUBJECT: GRB 141015A: ISON-NM early optical observations DATE: 14/10/15 17:27:15 GMT FROM: Alexei Pozanenko at IKI, Moscow L. Elenin (KIAM), E. Mazaeva (IKI), A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 141015A (Troja et al., GCN 16909) with 0.4-m telescope of ISON-NM observatory starting on Oct., 15 (UT) 09:16:55, i.e. ~4 minutes after burst triger. We obtained 14 unfiltered images of 120 s exposure. We do not detect any source within XRT error circle (Troja et al., GCN 16910): UT start t-T0 Exp. Filter UL (3sigma) (mid.,days) (s) 09:16:55 0.0068 5*120 Clear 18.4 09:16:55 0.0131 14*120 Clear 19.0 The photometry is based on nearby USNO-B1.0 stars USNO-B1.0 RA DEC R2 1083-0107546 087,552978 +18,360067 14,78 1083-0107529 087,547650 +18,355839 15,18 1083-0107484 087,534895 +18,341425 15,00 1083-0107360 087,503081 +18,336089 14,71
GCN 16912 table
GRB_name GRB141015A
GCN_number 16912
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16912 SUBJECT: GRB 141015A: Super-LOTIS early observations DATE: 14/10/15 17:55:40 GMT FROM: Adria C. Updike at Roger Williams U Adria C. Updike (Roger Williams University) and Dieter H. Hartmann (Clemson University) report on behalf of the AZTEC collaboration: We observed the field of the Swift GRB 141015A (Troja et al., GCN 16909) with the 0.6-m Super-LOTIS telescope at Kitt Peak National Observatory in Arizona under good conditions. Super-LOTIS began taking images 81 seconds after the trigger and continued for 37 minutes, obtaining 10 sec, 20 sec, and 60 sec images in the R band. We do not detect any source within the XRT error circle (Troja et al., GCN 16910): UT midtime Exp Time Filter Upper Limit ------------------------------------------------------------------- 09:15:01 4 x 10 sec R 16.5 09:16:50 5 x 20 sec R 17.4 09:23:35 10 x 60 sec R 19.0 with photometry based on the USNO B1.0 catalog.
GCN 16913 table
GRB_name GRB141015A
GCN_number 16913
Detection_method Swift-XRT Det
ra 87.5189°
decl 18.3294°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16913 SUBJECT: GRB 141015A: Enhanced Swift-XRT position DATE: 14/10/15 18:18:50 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 1819 s of XRT Photon Counting mode data and 4 UVOT images for GRB 141015A, 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 = 87.51892, +18.32940 which is equivalent to: RA (J2000): 05h 50m 4.54s Dec (J2000): +18d 19' 45.8" with an uncertainty of 2.3 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 16914 table
GRB_name GRB141015A
GCN_number 16914
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16914 SUBJECT: GRB 141015A: RATIR Optical Upper Limits DATE: 14/10/15 18:40:51 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 141015A (Troja, et al., GCN 16909) 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 15.39 to 2014/10 15.53 UTC (0.05 to 3.59 hours after the BAT trigger), obtaining a total of 2.44 hours exposure in the r and i bands. For a source within the Swift/XRT error circle (Troja, et al., GCN 16910), we obtain the following upper limits (3-sigma): r > 23.07 i > 22.48 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 16915 table
GRB_name GRB141015A
GCN_number 16915
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16915 SUBJECT: GRB 141015A: LCO-McDonald observations DATE: 14/10/15 20:50:22 GMT FROM: Andrea Melandri at INAF-OAB J. Japelj (U. Ljubljana) and C. Guidorzi (U. Ferrara) on behalf of a large collaboration report: We observed the position of GRB 141015A (Troja et al. GCN Circ. 16909) with the 1-m McDonald telescope (Fort Davis, US), a member of the Las Cumbres Observatory network. Observations started on October 15 at 09:51:01 UT, i.e., 38 minutes after the GRB trigger time (GCN Circ. 16909) and were done with the g', r' and i' filters. We did not find a new source within the enhanced XRT error circle (Evans et al. GCN Circ. 16913) down to the following limits: Mid time from Total Exp Filter Magnitude trigger (min) (s) ----------------------------------------------------------- 54.4 600 r' > 19.6 59.2 600 i' > 18.7 ----------------------------------------------------------- Magnitudes are calibrated against nearby USNO-B1 stars.
GCN 16916 table
GRB_name GRB141015A
GCN_number 16916
Detection_method Swift-BAT Det
ra 87.5350°
decl 18.3700°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16916 SUBJECT: GRB 141015A: Swift-BAT refined analysis DATE: 14/10/15 22:18:29 GMT FROM: Scott Barthelmy at NASA/GSFC A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), E. Troja (NASA/GSFC/UMCP), 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 141015A (trigger #615399) (Troja, et al., GCN Circ. 16909). The BAT ground-calculated position is RA, Dec = 87.535, 18.370 deg, which is RA(J2000) = 05h 50m 08.5s Dec(J2000) = +18d 22' 12.5" with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 98%. The mask-weighted light curve shows s single FRED-like pulse starting at ~T_0, peaking at ~T+1 sec, and ending at ~T+12 sec. T90 (15-350 keV) is 11.0 +- 4.1 sec (estimated error including systematics). The time-averaged spectrum from T+0.00 to T+13.00 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.90 +- 0.37. The fluence in the 15-150 keV band is 1.6 +- 0.4 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+1.00 sec in the 15-150 keV band is 0.5 +- 0.1 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/615399/BA/
GCN 16917 table
GRB_name GRB141015A
GCN_number 16917
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 16917 SUBJECT: GRB 141015A: MITSuME Okayama upper limits DATE: 14/10/16 06:05:45 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 and OISTER collaboration: We observed the field of GRB 141015A (Troja et al., GCNC 16909) 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 2014-10-15 13:44:05 UT, (~4.5 h after the burst). We did not find any new point source within the enhanced XRT circle (Evans, GCNC 16913) in all the three bands. Three sigma upper limits of the OT are listed below. We used GSC2.3 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' Rc Ic ----------------------------------------------------- 0.29816 16:22:18 5760.0 >20.1 >19.8 >19.0 ----------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 16918 table
GRB_name GRB141015A
GCN_number 16918
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16918 SUBJECT: GRB 141015A: Swift/UVOT Upper Limits DATE: 14/10/16 12:56:09 GMT FROM: Alice Breeveld at MSSL-UCL A. A. Breeveld (UCL-MSSL) and E. Troja (NASA/GSFC/UMCP) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 141015A 21301 s after the BAT trigger (Troja et al., GCN Circ. 16909). No optical afterglow consistent with the XRT position (Evans et al. GCN Circ. 16913) 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 21301 21451 147 >20.5 white 21301 23280 1033 >21.5 v 27071 27978 885 >19.8 b 21461 22368 885 >20.8 w1 28890 29661 759 >20.1 m2 27983 28883 886 >20.3 w2 23286 23906 610 >20.1 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.51 in the direction of the burst (Schlegel et al. 1998).
GCN 16923 table
GRB_name GRB141015A
GCN_number 16923
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 16923 SUBJECT: GRB 141015A: MITSuME Akeno upper limits DATE: 14/10/18 09:26:48 GMT FROM: Taketoshi Yoshii at Tokyo Tech Y. Yano, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi, S. Kurita, Y. Ono, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 141015A (E. Troja et al., GCN Circular #16909) 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 2014-10-15 14:40:07 UT (~5.5 h after the burst). We did not find any new point source within the enhanced XRT circle (P. A. Evans et al., GCN Circular #16913) in all the three bands. The measured magnitudes are listed below. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------------------------------ 31113 18:00:29 1440 >20.7 >20.1 >19.3 ------------------------------------------------------------------------------ T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 16925 table
GRB_name GRB141015A
GCN_number 16925
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 16925 SUBJECT: GRB 141015A: Swift-XRT afterglow confirmation and refined Analysis DATE: 14/10/19 08:10:41 GMT FROM: Phil Evans at U of Leicester E. Troja (NASA/GSFC/UMCP) reports on behalf of the Swift-XRT team: We have analysed 9.0 ks of XRT data for GRB 141015A (Troja et al. GCN Circ. 16909), from 21.3 ks to 271.2 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN Circ. 16913). The GRB light curve in the initial observation was at a level of ~0.02 ct/sec in XRT. In subsequent observations the GRB is undetected, with an upper limit of 0.004 ct/sec, we therefore confirm that this was the afterglow of GRB 141015A. A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.38 (+0.51, -0.20). The best-fitting absorption column is consistent with the Galactic value of 5.6 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 6.0 x 10^-11 (7.5 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 5.6 (+/-3.8) x 10^21 cm^-2 Galactic foreground: 5.6 x 10^21 cm^-2 Excess significance: <1.6 sigma Photon index: 1.38 (+0.51, -0.20) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00615399. This circular is an official product of the Swift-XRT team.
GCN 16940 table
GRB_name GRB141015A
GCN_number 16940
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16940 SUBJECT: GRB141015A iTelescope observation DATE: 14/10/22 08:37:23 GMT FROM: Takanori Sakamoto at AGU D. Kawamura, T. Sakamoto, A. Yoshida (AGU) We observed the field of GRB 141015A detected by Swift (trigger #615399; Troja et al., GCN Circ. 16909) with the iTelescope.Net (http://www.itelescope.net) T05 (0.25 m Takahashi Epsilon) telescope located at the New Mexico Skies Observatory (NM, USA). 20 images of 60 sec exposures were taken in the Red filter starting from October 15 09:37:23 (UT) about 26 minutes after the trigger and stopped on October 5 10:04:00 (UT). We do not detect the optical afterglow both in the individual images and the stacked image at the enhanced X-ray afterglow position (Evans et al., GCN Circ. 16913). The estimated five sigma upper limit of the combined image (total exposure of 1200 sec) is ~17.1 using the USNO-B1 catalog.
GCN 17066 table
GRB_name GRB141015A
GCN_number 17066
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17066 SUBJECT: GRB 141015A: TAROT La Silla observatory optical observations DATE: 14/11/13 00:47:42 GMT FROM: Alain Klotz at IRAP-CNRS-OMP Klotz A., Turpin D. (IRAP-CNRS-OMP), Boer M., Gendre B., Siellez K., Dereli H., Bardho O. (UNS-CNRS-OCA), Atteia J.L. (IRAP-CNRS-OMP) report: We imaged the field of GRB 141015A detected by SWIFT (trigger 615399) with the TAROT robotic telescope (D=25cm) located at the European Southern Observatory, La Silla observatory, Chile. The observations started 55s after the GRB trigger (19s after the notice). The elevation of the field decreased from 42 degrees above horizon but it was dawn (sun elevation -11 deg). The first image is trailed with a duration of 60.0s (see the description in Klotz et al., 2006, A&A 451, L39). We do not detect any OT with a limiting magnitude of: t0+55s to t0+115s : R > 12.2 Later images were acquired in tracking mode until 521 seconds after the trigger. We detect no optical afterglow at Rlim = 12.5 Magnitudes were estimated with the nearby USNO-B1 stars and are not corrected for galactic dust extinction.