GRB141031B

This page lists all entries on GRB141031B in GRBweb

Summary IPN Swift GCN 16998 GCN 16999 GCN 17000 GCN 17006 GCN 17007 GCN 17009 GCN 17011 GCN 17012 GCN 17013 GCN 17014 GCN 17015 GCN 17017 GCN 17018 GCN 17029

Summary table
Variable Value Source
T0 14:56:45 UTC GCN_circulars,Swift Det
ra 356.9048° Swift
decl 41.3523° Swift
pos_error 2.20e-04° Swift
T90 16.0 s Swift
T90_start 14:56:45 UTC Swift
fluence 2.50e-07 erg/cm² Swift
T100 16.0 s
GBM_located False
mjd 56961.62274305556 GCN_circulars,Swift Det
IPN table
GRB_name GRB141031B
ra 356.9333°
decl 41.3667°
pos_error 5.00e-02°
Swift table
GRB_name GRB141031B
t_trigger 14:56:45 UTC
ra 356.9048°
decl 41.3523°
pos_error 2.20e-04°
T90 16.0 s
fluence 2.50e-07 erg/cm²
GCN 16998 table
GRB_name GRB141031B
GCN_number 16998
Detection_method Swift Det
t_trigger 14:56:45 UTC
ra 356.9320°
decl 41.3650°
Circular_text TITLE: GCN CIRCULAR NUMBER: 16998 SUBJECT: GRB 141031B: Swift detection of a burst DATE: 14/10/31 15:10:05 GMT FROM: David Palmer at LANL B.P. Gompertz (U Leicester), J. R. Cummings (NASA/UMBC), V. D'Elia (ASDC), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), H. A. Krimm (CRESST/GSFC/USRA), K. L. Page (U Leicester), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 14:56:45 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 141031B (trigger=617149). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 356.932, +41.365 which is RA(J2000) = 23h 47m 44s Dec(J2000) = +41d 21' 56" 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 20 sec. The peak count rate was ~500 counts/sec (15-350 keV), at ~5 sec after the trigger. The XRT began observing the field at 14:58:42.5 UT, 117.5 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source with an enhanced position: RA, Dec 356.9056, 41.3519 which is equivalent to: RA(J2000) = 23h 47m 37.33s Dec(J2000) = +41d 21' 07.0" with an uncertainty of 2.6 arcseconds (radius, 90% containment). This location is 85 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 1.22 x 10^21 cm^-2 (Willingale et al. 2013). UVOT took a finding chart exposure of 150 seconds with the White filter starting 119 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 BAT 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 0.15. Burst Advocate for this burst is B.P. Gompertz (bpg6 AT 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 16999 table
GRB_name GRB141031B
GCN_number 16999
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 16999 SUBJECT: GRB 141031B: MASTER early optical observations DATE: 14/10/31 15:23:47 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University E. Gorbovskoy, V. Lipunov, M.Pruzhinskaya, V.Kornilov, D.Kuvshinov, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Lomonosov Moscow State University, Sternberg Astronomical Institute, Moscow State University V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory V.Krushinsky, I.Zalozhnih, A. Popov Ural Federal University, Yekaterinburg, Kourovka Hugo Levato and Carlos Saffe Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE) Claudio Mallamaci, Carlos Lopez and Federico Podest Observatorio Astronomico Felix Aguilar (OAFA) MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru) located in Tunka was pointed to the GRB141031B 33 sec after notice time and 88 sec after trigger time at 2014-10-31 14:58:13 UT in two polarizations. On our first (20s exposure) set we haven't found optical transient within SWIFT error-box (Gompertz et al GCN 16998). The 5-sigma upper limit has been about 16.0 mag MASTER II robotic telescope located in Kislovodsk was pointed to the GRB141031B 23 sec after notice time and 77 sec after trigger time at 2014-10-31 14:58:03 UT in two polarizations. On our first (20s exposure) set we haven't found optical transient within SWIFT error-box. The 5-sigma upper limit has been about 15.5 mag. The message may be cited.
GCN 17000 table
GRB_name GRB141031B
GCN_number 17000
Detection_method Optical
ra 356.9052°
decl 41.3521°
Circular_text TITLE: GCN CIRCULAR NUMBER: 17000 SUBJECT: GRB 141031B: Nanshan optical upper limit DATE: 14/10/31 16:33:01 GMT FROM: Dong Xu at DARK/NBI D. Xu (DARK/NBI), C.-H. Bai, T.-Z. Yang, A. Esamdin, L. Ma (XAO) report: We observed the field of GRB 141031B (Gompertz et al., GCN 16998), using the 1m telescope located at Nanshan, Xinjiang, China. We obtained 2x300s and 1x600s R-band images, starting at 16:02:08 UT on 2014-10-31 (i.e., 1.090 hr after the burst). No optical source is detected at the XRT position (R.A.=23:47:37.24, Dec.=+41:21:07.7, Err. Rad.=2.4"), down to a limiting magnitude of R=20.6 mag.
GCN 17006 table
GRB_name GRB141031B
GCN_number 17006
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17006 SUBJECT: GRB 141031B: 1.23m CAHA I-band observations DATE: 14/10/31 19:40:47 GMT FROM: Javier Gorosabel at IAA-CSIC J. Gorosabel (IAA-CSIC/UPV-EHU), S. Hellmich (DLR), S. Mottola (DLR), report on behalf of a larger collaboration: We observed the field of the GRB 141031B (Gompertz et al., GCN 16998) with the 1.23m CAHA telescope in the I-band filter. Observations started on Oct. 31.74693 UT (2.98 hours post burst). No object brighter than I~20.5 (Vega) is detected within the XRT error circle. Further observations are ongoing.
GCN 17007 table
GRB_name GRB141031B
GCN_number 17007
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17007 SUBJECT: GRB 141031B: TShAO optical upper limit DATE: 14/10/31 20:03:58 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Khruslov (INASAN), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the GRB 141031B (Gompertz et al., GCN 16998) with Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical Observatory on Oct., 31 starting on (UT) 15:39:02, i.e. ~0.7 hours after burst trigger. We took several images in R-filter of 600 exposure. In the first image we do not detect any object brighter than R=21.5 in XRT error circle (Gompertz et al., GCN 16998). Details of the photometry are following: date UT start t-T0 Filter Exp. UL (3 sigma) (mid, days) (s) 2014-10-31 15:39:02 0.03284 R 600 21.5 The photometry is based on nearby SDSS DR9 stars.
GCN 17009 table
GRB_name GRB141031B
GCN_number 17009
Detection_method Swift-XRT Det
ra 356.9050°
decl 41.3525°
Circular_text TITLE: GCN CIRCULAR NUMBER: 17009 SUBJECT: GRB 141031B: Enhanced Swift-XRT position DATE: 14/10/31 21:02:11 GMT FROM: Phil Evans at U of Leicester M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team. Using 712 s of XRT Photon Counting mode data and 1 UVOT images for GRB 141031B, 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 = 356.90499, +41.35253 which is equivalent to: RA (J2000): 23h 47m 37.20s Dec (J2000): +41d 21' 09.1" with an uncertainty of 1.9 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 17011 table
GRB_name GRB141031B
GCN_number 17011
Detection_method Swift-BAT Det
ra 356.8830°
decl 41.3550°
Circular_text TITLE: GCN CIRCULAR NUMBER: 17011 SUBJECT: GRB 141031B: Swift-BAT refined analysis DATE: 14/10/31 23:49:19 GMT FROM: Jay R. Cummings at NASA/GSFC/Swift 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 (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-240 to T+962 sec from the recent telemetry downlink, we report further analysis of BAT GRB 141031B (trigger #617149) (Gompertz, et al., GCN Circ. 16998). The BAT ground-calculated position is RA, Dec = 356.883, 41.355 deg which is RA(J2000) = 23h 47m 31.9s Dec(J2000) = +41d 21' 19.1" with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows one weak FRED peak. T90 (15-350 keV) is 16.0 +- 3.6 sec (estimated error including systematics). The time-averaged spectrum from T+1.21 to T+18.21 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.36 +- 0.35. The fluence in the 15-150 keV band is 2.5 +- 0.5 x 10^-07 erg/cm2. The 1-sec peak photon flux measured from T+4.21 sec in the 15-150 keV band is 0.3 +- 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/617149/BA/
GCN 17012 table
GRB_name GRB141031B
GCN_number 17012
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 17012 SUBJECT: GRB 141031B: MITSuME Ishigakijima upper limits DATE: 14/11/01 01:40:01 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ), K. Yanagisawa (OAO, NAOJ), S.Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME and OISTER collaboration: We observed the field of GRB 141031B (Gompertz et al., GCNC 16998) with the optical three color (g', Rc and Ic) CCD camera attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory. The observation started on 2014-10-31 15:02:03 (~5.3 min after the burst). We did not find any new point source within the enhanced XRT circle (Osborne et al., GCNC 17009) in all the three bands. Three sigma upper limits of the OT are listed below. We used SDSS catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' Rc Ic ----------------------------------------------------- 0.04563 16:02:27 6120.0 >22.6 >22.4 >21.3 ----------------------------------------------------- T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 17013 table
GRB_name GRB141031B
GCN_number 17013
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17013 SUBJECT: GRB 141031B: NOT optical observations DATE: 14/11/01 01:53:00 GMT FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst Daniele Malesani (DARK/NBI) and Vania Lorenzi (INAF/TNG) report on behalf of the CIBO collaboration: We observed the field of GRB 141031B (Gompertz et al., GCN 16998) with the Nordic Optical Telescope (NOT) equipped with StanCam. Observations were carried out in the Johnson R (9x300 s) and SDSS z (6x300 s) filters under moderate weather conditions (1.5" seeing). No objects are detected in either bands within the refined X-ray position (Goad et al., GCN 17009), down to limiting magnitudes of R = 22.5 (Vega) and z = 21.5 (AB), with mean times 7.93 and 8.48 hr after the GRB (calibration against USNO B1 and SDSS, respectively).
GCN 17014 table
GRB_name GRB141031B
GCN_number 17014
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17014 SUBJECT: GRB 141031B: Bassano Bresciano Observatory upper limit DATE: 14/11/01 07:20:56 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla and R.Girelli report: We imaged the field of GRB 141031B detected by SWIFT(trigger 617149) with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy (member of ISSP:Italian Supernovae Search Project) The observations started 2.16 hour after the GRB trigger, at the end of twilight, with our schmidt telescope D=320/400 mm F/D=3.1. Weather conditions were good. We did not found any optical counterpart in the error box of the XRTcandidate. (B.P. Gompertz (U Leicester) et al, GCN 16998) Start T0+ End T0+ Vlim 2.16 hour 4.48 hour 18 Magnitudes were estimated with the USNO-B1.0 cat. and are not corrected for galactic dust extinction. The message may be cited.
GCN 17015 table
GRB_name GRB141031B
GCN_number 17015
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17015 SUBJECT: GRB 141031B: Swift-XRT refined Analysis DATE: 14/11/01 09:10:31 GMT FROM: Phil Evans at U of Leicester V. Mangano (PSU), M.C. Stroh (PSU), D.N. Burrows (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 B.P. Gompertz report on behalf of the Swift-XRT team: We have analysed 12 ks of XRT data for GRB 141031B (Gompertz et al. GCN Circ. 16998), from 126 s to 51.8 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN Circ. 17009). The light curve can be modelled with a power-law decay with a decay index of alpha=0.84 (+0.09, -0.08). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.8 (+/-0.4). The best-fitting absorption column is 5.5 (+2.5, -2.7) x 10^21 cm^-2, in excess of the Galactic value of 1.2 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 4.6 x 10^-11 (6.8 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 5.5 (+2.5, -2.7) x 10^21 cm^-2 Galactic foreground: 1.2 x 10^21 cm^-2 Excess significance: 2.6 sigma Photon index: 1.8 (+/-0.4) If the light curve continues to decay with a power-law decay index of 0.84, the count rate at T+24 hours will be 1.5 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 6.9 x 10^-14 (1.0 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/00617149. This circular is an official product of the Swift-XRT team.
GCN 17017 table
GRB_name GRB141031B
GCN_number 17017
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17017 SUBJECT: GRB 141031B: Swift/UVOT Upper Limits DATE: 14/11/01 11:09:58 GMT FROM: Samantha Oates at MSSL S. R. Oates (IAA-CSIC/UCL-MSSL) and B. P. Gompertz (U Leicester) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 141031B 120 s after the BAT trigger (Gompertz et al., GCN Circ. 16998). No optical afterglow consistent with the XRT position (Goad et al. GCN Circ. 17009) 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 120 270 147 >21.0 u_FC 278 528 246 >20.3 white 120 6181 580 >21.8 v 608 11035 1317 >20.6 b 534 5976 432 >20.9 u 278 5771 659 >20.9 w1 658 12348 620 >20.7 m2 633 11940 1121 >20.9 w2 584 6386 432 >20.5 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.14 in the direction of the burst (Schlegel et al. 1998).
GCN 17018 table
GRB_name GRB141031B
GCN_number 17018
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17018 SUBJECT: GRB 141031B: RATIR Optical and NIR Observation DATE: 14/11/01 16:05:34 GMT FROM: Nat Butler at UC berkeley 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 141031B (Gompertz, et al., GCN 16998) 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 2014/11 1.10 to 2014/11 1.11 UTC (11.34 to 11.75 hours after the BAT trigger), obtaining a total of 0.36 hours exposure in the r, i, and z bands. For a source within the enhanced Swift-XRT error circle (Goad, et al., GCN 17009), in comparison with the SDSS DR9, we obtain the following upper limits (3-sigma): r > 22.98 i > 22.81 z > 19.91 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 17029 table
GRB_name GRB141031B
GCN_number 17029
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17029 SUBJECT: GRB 141031B: TShAO optical observations DATE: 14/11/05 19:27:48 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Volnova (IKI), A. Khruslov (INASAN), A. Kusakin (Fesenkov Astrophysical Institute), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the GRB 141031B (Gompertz et al., GCN 16998) with Zeiss-1000 (East) 1m telescope of Tien Shan Astronomical Observatory on Oct., 31 starting on (UT) 15:39:02. Within enhanced XRT error circle (Goad et al., GCN 17009) we do not detect any object either in a single image (Mazaeva et al., GCN 17007) or in combined image of a total exposure of 4800 s. Details of the photometry are following: date UT start t-T0 Filter Exp. UL (3 sigma) (mid, days) (s) 2014-10-31 15:39:02 0.03284 R 600 21.5 2014-10-31 15:39:02 0.05837 R 8*600 22.3 The photometry is based on following SDSS DR9 stars: SDSS_id R_Lupton err J234748,81+411954,3 16.430 0.014 J234749,26+412154,3 16.866 0.014 J234741,02+411920,5 17.452 0.015