GRB141109B

This page lists all entries on GRB141109B in GRBweb

Summary IPN Swift GCN 17038 GCN 17045 GCN 17046 GCN 17047 GCN 17051 GCN 17052 GCN 17054 GCN 17058 GCN 17067

Summary table
Variable Value Source
T0 7:47:39 UTC GCN_circulars,Swift Det
ra 222.3032° Swift
decl 73.1309° Swift
pos_error 1.94e-04° Swift
T90 54.2 s Swift
T90_start 7:47:39 UTC Swift
fluence 6.30e-07 erg/cm² Swift
T100 54.2 s
GBM_located False
mjd 56970.32475694444 GCN_circulars,Swift Det
IPN table
GRB_name GRB141109B
ra 222.3625°
decl 73.1167°
pos_error 5.00e-02°
Swift table
GRB_name GRB141109B
t_trigger 7:47:39 UTC
ra 222.3032°
decl 73.1309°
pos_error 1.94e-04°
T90 54.2 s
fluence 6.30e-07 erg/cm²
GCN 17038 table
GRB_name GRB141109B
GCN_number 17038
Detection_method Swift Det
t_trigger 7:47:39 UTC
ra 222.3610°
decl 73.1250°
Circular_text TITLE: GCN CIRCULAR NUMBER: 17038 SUBJECT: GRB 141109B: Swift detection of a burst DATE: 14/11/09 08:03:11 GMT FROM: Scott Barthelmy at NASA/GSFC A. Melandri (INAF-OAB), S. D. Barthelmy (GSFC), M. G. Bernardini (INAF-OAB), M. M. Chester (PSU), P. D'Avanzo (INAF-OAB), C. B. Markwardt (NASA/GSFC) and T. N. Ukwatta (LANL) report on behalf of the Swift Team: At 07:47:39 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 141109B (trigger=618032). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 222.361, +73.125, which is RA(J2000) = 14h 49m 27s Dec(J2000) = +73d 07' 30" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows multiple peaks with a duration of about 45 sec. The peak count rate was ~1000 counts/sec (15-350 keV), at ~6 sec after the trigger. The XRT began observing the field at 07:50:43.7 UT, 184.6 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source with an enhanced position: RA, Dec 222.3033, 73.1306 which is equivalent to: RA(J2000) = 14h 49m 12.79s Dec(J2000) = +73d 07' 50.3" with an uncertainty of 2.1 arcseconds (radius, 90% containment). This location is 63 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 in excess of the Galactic value (2.46 x 10^20 cm^-2, Willingale et al. 2013), with an excess column of 2.4 (+1.91/-1.72) x 10^21 cm^-2 (90% confidence). UVOT took a finding chart exposure of 150 seconds with the White filter starting 187 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 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.02. Burst Advocate for this burst is A. Melandri (andrea.melandri AT brera.inaf.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 17045 table
GRB_name GRB141109B
GCN_number 17045
Detection_method Swift-XRT Det
ra 222.3032°
decl 73.1308°
Circular_text TITLE: GCN CIRCULAR NUMBER: 17045 SUBJECT: GRB 141109B: Enhanced Swift-XRT position DATE: 14/11/09 18:04:45 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 2820 s of XRT Photon Counting mode data and 5 UVOT images for GRB 141109B, 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 = 222.30317, +73.13085 which is equivalent to: RA (J2000): 14h 49m 12.76s Dec (J2000): +73d 07' 51.1" with an uncertainty of 1.5 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 17046 table
GRB_name GRB141109B
GCN_number 17046
Detection_method Swift-BAT Det
ra 222.4530°
decl 73.1410°
Circular_text TITLE: GCN CIRCULAR NUMBER: 17046 SUBJECT: GRB 141109B: Swift-BAT refined analysis DATE: 14/11/09 18:11:35 GMT FROM: Scott Barthelmy at NASA/GSFC J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), A. Melandri (INAF-OAB), 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-60 to T+243 sec from recent telemetry downlinks, we report further analysis of BAT GRB 141109B (trigger #618032) (Melandri, et al., GCN Circ. 17038). The BAT ground-calculated position is RA, Dec = 222.453, 73.141 deg, which is RA(J2000) = 14h 49m 48.8s Dec(J2000) = +73d 08' 26.3" with an uncertainty of 2.6 arcmin, (radius, sys+stat, 90% containment). The partial coding was 75%. The mask-weighted light curve shows a couple overlapping peaks starting at ~T-20 sec, peaking at ~T+28 sec, and ending at ~T+60 sec. T90 (15-350 keV) is 54.2 +- 5.0 sec (estimated error including systematics). The time-averaged spectrum from T-13.18 to T+44.18 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.85 +- 0.22. The fluence in the 15-150 keV band is 6.3 +- 0.9 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+28.05 sec in the 15-150 keV band is 0.4 +- 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/618032/BA/
GCN 17047 table
GRB_name GRB141109B
GCN_number 17047
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17047 SUBJECT: GRB 141109B: BOOTES-4 and TERSKOL optical upper limit DATE: 14/11/09 22:02:16 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia I.V. Sokolov, A. Moskvitin, V.V. Sokolov (SAO-RAS Zelenchukaja, Russia), S. Guziy (Nikolaev Univ. Obs., Ukraine), A.J. Castro-Tirado, J.C. Tello (IAA-CSIC Granada, Spain), Y. Fan, X. Zhao, J. Bai, Ch. Wang and Y. Xin (Yunnan National Astronomical Observatory, China) on behalf of a larger collaboration, report: Following the detection of GRB 141109B by Swift/BAT (Melandri et al., GCNC 17038), the robotic 0.6m MET telescope at the BOOTES-4 station, in Lijiang Astronomical Observatory (China) responded to the event after the sunset, with the first images being obtained about 3.5 h post-burst. Additional R-band images (6 x 300s) were taken at the 2.0m Terskol telescope in the Northern Caucasus starting 11.3 hr post-burst. No optical source is detected at the refined Swift/XRT position (Beardmore et al., GCNC 17045) down to the DSS limit. Observations at longer wavelengths are encouraged.
GCN 17051 table
GRB_name GRB141109B
GCN_number 17051
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17051 SUBJECT: GRB 141109B: Swift-XRT refined Analysis DATE: 14/11/10 08:03:04 GMT FROM: Phil Evans at U of Leicester M.C. Stroh (PSU), D.N. Burrows (PSU), K.L. Page (U. Leicester), C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), B. Sbarufatti (INAF-OAB/PSU), P. D'Avanzo (INAF-OAB), J.A. Kennea (PSU) and A. Melandri report on behalf of the Swift-XRT team: We have analysed 6.0 ks of XRT data for GRB 141109B (Melandri et al. GCN Circ. 17038), from 170 s to 70.7 ks after the BAT trigger. The data comprise 7 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 Beardmore et al. (GCN Circ. 17045). The light curve can be modelled with an initial power-law decay with an index of alpha=5.2 (+1.4, -1.1), followed by a break at T+291 s to an alpha of 0.51 (+/-0.04). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.96 (+0.16, -0.15). The best-fitting absorption column is 9.8 (+4.2, -3.8) x 10^20 cm^-2, in excess of the Galactic value of 2.5 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 3.4 x 10^-11 (4.1 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 9.8 (+4.2, -3.8) x 10^20 cm^-2 Galactic foreground: 2.5 x 10^20 cm^-2 Excess significance: 3.2 sigma Photon index: 1.96 (+0.16, -0.15) If the light curve continues to decay with a power-law decay index of 0.51, the count rate at T+24 hours will be 0.034 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.1 x 10^-12 (1.4 x 10^-12) erg cm^-2 s^-1. The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00618032. This circular is an official product of the Swift-XRT team.
GCN 17052 table
GRB_name GRB141109B
GCN_number 17052
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17052 SUBJECT: GRB 141109B: IRAM 30m millimetre observations DATE: 14/11/10 10:16:50 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia A. J. Castro-Tirado, J. C. Tello (IAA-CSIC Granada), A. Monfardini (NEEL-CNRS Grenoble), R. Adam, B. Comis (LPSC Grenoble), N. Ponthieu (Univ. of Grenoble), C. Kramer and I. Hermelo (IRAM Granada), on behalf of a larger collaboration, report: Following the detection of GRB 141109B by Swift (Melandri et al. GCNC 17038), observations with the IRAM 30m antenna (+NIKA) at Pico Veleta (Spain) were triggered on 9 Nov under good conditions but at relatively low elevation (25 deg). At the position of the X-ray afterglow (Beardmore et al. GCNC 17045), we detect no mm afterglow (at 150 GHz) down to a preliminary flux density of 1 mJy (3 sigma) on Nov 9, 20:30 UT (mid time). We acknowledge excellent assistance from the IRAM observers.
GCN 17054 table
GRB_name GRB141109B
GCN_number 17054
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 17054 SUBJECT: GRB 141109B: MITSuME Akeno upper limits DATE: 14/11/10 14:46:44 GMT FROM: Taketoshi Yoshii at Tokyo Tech Y.Ono, T. Yoshii, Y. Saito, Y. Tachibana, H. Ohuchi, Y. Yano, S. Kurita, T. Fujiwara, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 141109B (A.Melandri et al., GCN Circular #17038) 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 2014-11-09 18:57:42.8 UT (~11.2h after the burst). We did not find any new point source within XRT circle in all three bands. The measured magnitudes are listed below. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic --------------------------------------------------------------------------------------- 40320 19:52:29.1 780 >19.4 >19.0 > 18.4 --------------------------------------------------------------------------------------- T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 17058 table
GRB_name GRB141109B
GCN_number 17058
Detection_method Swift-UVOT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 17058 SUBJECT: GRB 141109B: Swift/UVOT Upper Limits DATE: 14/11/10 22:56:56 GMT FROM: Frank Marshall at GSFC F. E. Marshall (NASA/GSFC) and A. Melandri (INAF-OAB) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 141109B 188 s after the BAT trigger (Melandri et al., GCN Circ. 17038). No optical afterglow consistent with the UVOT-enhanced XRT position (Beardmore et al., GCN Circ. 17045) 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 188 338 147 >20.1 u_FC 347 596 246 >20.4 white 188 6699 588 >21.3 v 677 7110 313 >20.4 b 602 6494 294 >21.0 u 347 13125 1061 >20.9 w1 727 12566 1207 >21.0 m2 701 7315 255 >20.8 w2 828 6905 255 >21.0 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.02 in the direction of the burst (Schlegel et al. 1998).
GCN 17067 table
GRB_name GRB141109B
GCN_number 17067
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 17067 SUBJECT: GRB 141109B: optical upper limits DATE: 14/11/13 00:53:15 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Stepura (UAFO, ISON), R. Inasaridze (AAO), B. Abdulloev (Institute of Astrophysics), A. Matkin (UAFO, ISON), N. Minikulov (Institute of Astrophysics), A. Volnova (IKI), Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the Swift GRB 141109B (Melandri et al., GCN 17038) with following instruments: SANTEL-650 (0.65m) telescope of UAFO/ISON-Ussuriysk Observatory, AZT-8 (0.7m) telescope of Gissar observatory, and AS-32 (0.7m) telescope of Abastumani Observatory (AAO). In the enhanced XRT error circle (Beardmore et al., GCN 17045) we do not detect any source with upper limits listed below: Date UT start t-T0 Filter Exp. UL(3sigma) Observatory (mid, days) (s) 2014-11-09 09:18:51 0.10220 clear 100*60 20.7 UAFO 2014-11-09 14:30:43 0.29425 R 40*60 19.9 Gissar 2014-11-09 15:26:30 0.38464 clear 71*120 22.0 AAO The photometry is based on stars of USNO-B1.0 and assumed R magnitudes: RA DEC R 222.429145 +73.085200 14.97 222.517839 +73.110348 15.54 222.193512 +73.123517 17.06 222.275356 +73.104562 17.46 222.463681 +73.158509 17.55