GRB161014A

This page lists all entries on GRB161014A in GRBweb

Summary Fermi GBM IPN Swift GCN 20035 GCN 20036 GCN 20037 GCN 20038 GCN 20039 GCN 20040 GCN 20042 GCN 20043 GCN 20044 GCN 20045 GCN 20046 GCN 20047 GCN 20048 GCN 20049 GCN 20050 GCN 20051 GCN 20052 GCN 20058 GCN 20059 GCN 20061 GCN 20066 GCN 20115

Summary table
Variable Value Source
GRB_name_Fermi GRB161014522
T0 12:31:12.586 UTC Fermi_GBM
ra 332.6478° Swift
decl 7.4687° Swift
pos_error 1.16e-04° Swift
T90 36.609 s Fermi_GBM
T90_error 1.493 s Fermi_GBM
T90_start 12:31:12.586 UTC Fermi_GBM
fluence 6.10e-06 erg/cm² Fermi_GBM
fluence_error 4.67e-08 erg/cm² Fermi_GBM
redshift 2.8230 GCN_circulars,Other
T100 36.609 s
GBM_located False
mjd 57675.521673449075 Fermi_GBM
Fermi GBM table
GRB_name_Fermi GRB161014522
trigger_name bn161014522
ra 332.6479°
decl 7.4686°
pos_error 3.30e+00°
datum 2016-10-14
t_trigger 12:31:15.914 UTC
T90 36.609 s
T90_error 1.493 s
T90_start 12:31:12.586 UTC
fluence 6.10e-06 erg/cm²
fluence_error 4.67e-08 erg/cm²
flux_1024 5.66e+00 erg/cm²/s
flux_1024_error 2.90e-01 erg/cm²/s
flux_1024_time 6.98e+00 erg/cm²/s
flux_64 9.40e+00 erg/cm²/s
flux_64_error 1.29e+00 erg/cm²/s
IPN table
GRB_name GRB161014A
ra 332.6292°
decl 7.4833°
pos_error 5.00e-02°
redshift 2.8230
Swift table
GRB_name GRB161014A
t_trigger 12:31:22 UTC
ra 332.6478°
decl 7.4687°
pos_error 1.16e-04°
T90 18.3 s
fluence 1.90e-06 erg/cm²
redshift 2.8230
GCN 20035 table
GRB_name GRB161014A
GCN_number 20035
Detection_method Swift Det
t_trigger 12:31:22 UTC
ra 332.6280°
decl 7.4860°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20035 SUBJECT: GRB 161014A: Swift detection of a burst DATE: 16/10/14 12:49:21 GMT FROM: Scott Barthelmy at NASA/GSFC J. L. Racusin (NASA/GSFC), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), N. P. M. Kuin (UCL-MSSL), A. Melandri (INAF-OAB), B. Mingo (U Leicester), K. L. Page (U Leicester), T. Sakamoto (AGU) and B. Sbarufatti (INAF-OAB/PSU) report on behalf of the Swift Team: At 12:31:22 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 161014A (trigger=717500). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 332.628, +7.486 which is RA(J2000) = 22h 10m 31s Dec(J2000) = +07d 29' 09" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows any short peaks with a total duration of about 35 sec. The peak count rate was ~3200 counts/sec (15-350 keV), at ~1 sec after the trigger. The XRT began observing the field at 12:33:24.5 UT, 121.8 seconds after the BAT trigger. No source was detected in 574 s of promptly downlinked data, which covered 0% of the BAT error circle. We are waiting for the full dataset to detect and localise the XRT counterpart. No UVOT data is available at this time. We note that this BAT trigger time is within 7 sec of a Fermi-GBM trigger (trigger= 498141079). Burst Advocate for this burst is J. L. Racusin (judith.racusin 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 20036 table
GRB_name GRB161014A
GCN_number 20036
Detection_method MITSuME
ra 332.6478°
decl 7.4688°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20036 SUBJECT: GRB 161014A: MITSuME-Akeno optical observation DATE: 16/10/14 13:14:41 GMT FROM: Yoichi Yatsu at Tokyo Tech. K.Morita, Y. Saito, Y. Ono, T. Yoshii, H. Ohuchi, Y.Tachibana, Y. Yano, T.Fujiwara, S. Harita, Y.Muraki, K.Saisho, T.Ozawa, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We searched for the optical counterpart of GRB 161014A (J. L. Racusin et al., GCN Circular #20035) 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 2016-10-14 12:32:08 UT (46 sec after the burst). We found a candidate afterglow in the BAT error circle (J. L. Racusin, GCNCircular #20035), at RA(J2000) = 22:10:35.47 Dec(J2000) = +07:28:07.6 with an uncertainty of ~0.4 arcsec. We obtained the following magnitude in Rc band. T0+[sec] MID-UT T-EXP[sec] Rc Rc_err ——————————————————————————————— 46 12:32:23 30 ~14.52 0.06 ——————————————————————————————— T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 20037 table
GRB_name GRB161014A
GCN_number 20037
Detection_method Optical
ra 332.6478°
decl 7.4687°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20037 SUBJECT: GRB161014A: optical afterglow candidate with the LCOGT-FTS DATE: 16/10/14 13:20:55 GMT FROM: Cristiano Guidorzi at Ferrara U,Italy C. Guidorzi (U. Ferrara), S. Kobayashi, I.A. Steele (LJMU), C.G. Mundell (U. Bath), A. Gomboc (U. Nova Gorica) on behalf of a large collaboration report: The 2-m LCOGT Faulkes Telescope South began observing Swift GRB161014A (Racusin et al., GCN 20035) in the SDSS r and i filters on October 14, 12:44:15 UT (~13 minutes since trigger). Within the BAT error circle we find an uncatalogued object at the following position: RA(J2000)= 22:10:35.47 Dec(J2000)= +07:28:07.3 with a 1 arcsec error radius and a magnitude of i~18 as calibrated against nearby SDSS stars.
GCN 20038 table
GRB_name GRB161014A
GCN_number 20038
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20038 SUBJECT: GRB 161014A : Xinglong TNT optical observation DATE: 16/10/14 15:18:07 GMT FROM: L.P. Xin at NAOC L. P. Xin, M. Zhai, J. Y. Wei, Y. L. Qiu, J. S. Deng, J. Wang, X. H. Han, L. H. Li and C. Wu on behalf of EAFON report: We began to observe GRB 161014A (Racusin et al., GCN 20035) with Xinglong 0.8-m TNT telescope at 2016-10-14, 12:33:03(UT), about 100 sec after the Swift trigger time. The new source reported by Morita et al., (GCN 20036) and Guidorzi et al., (GCN 20037) was clearly detected in the white images. Preliminary analysis shows that the brightness of the optical afterglow in R band is about 15.02 mag, calibrated by a nearby USNO B1.0 object (22:10:31.5, +07:28:47, J2000, R=13.78mag), at the mid time of 110 sec after the burst. This message could be cited. We thank the excellent support of the Xinglong 80cm TNT staff, particularly S. Liu
GCN 20039 table
GRB_name GRB161014A
GCN_number 20039
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20039 SUBJECT: GRB 161014A: Kanata optical observation DATE: 16/10/14 16:56:59 GMT FROM: Michitoshi Yoshida at HASC,Hiroshima U Nakaoka, T., Kawahara, N., Yang, C., Nagashima, H, Yoshida, M., Kawabata, K. (Hiroshima Univ.) on behalf of the OISTER collaboration We performed R band imaging observations around the error circle of GRB 161014A (Racusin et al., GCN 20035) with the optical imager HOWPol attached to Kanata telescope of Hiroshima University. The observation was made at 2016-10-14 12:32:48 UT (mid time of the observation). We detected the optical transient reported by Morita et al. (GCN 20036), Guidorzi et al. (GCN 20037) and Xin et al. (GCN 20038) in our R-band image. The detected magnitude and five sigma upper limit (in Vega magnitude) of the OT are listed below. # T0+ MID-UT T-EXP R mag. R err R limit ------------------------------------------------------- 86 12:32:48 30 15.1 0.2 17.0 ------------------------------------------------------- T0+ : Elapsed time after the burst [sec] T-EXP: Total Exposure time [sec]
GCN 20040 table
GRB_name GRB161014A
GCN_number 20040
Detection_method Swift-XRT Other
ra 332.6476°
decl 7.4686°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20040 SUBJECT: GRB 161014A: Swift-XRT and UVOT afterglow detection DATE: 16/10/14 19:04:03 GMT FROM: Andrea Melandri at INAF-OAB P. D'Avanzo, S. R. Oates (U. of Warwick), A. Melandri (INAF-OAB), P. A. Evans (U. Leicester), F. E. Marshall (NASA/GSFC), J. L. Racusin (NASA/GSFC) report on behalf of the Swift team: We have analysed 1.9 ks of XRT data for GRB 161014A (Racusin et al. GCN Circ. 20035), from 108 s to 5.8 ks after the BAT trigger. The data comprise 48 s in Windowed Timing (WT) mode (the first 7 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. Using 1696 s of PC mode data and 4 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 332.64764, +7.46858 which is equivalent to: RA (J2000): 22h 10m 35.43s Dec(J2000): +07d 28' 06.9" with an uncertainty of 1.7 arcsec (radius, 90% confidence). UVOT took a settling exposure of 9.8 seconds with the v filter starting 109 seconds after the BAT trigger. We find a source consistent with the position of the afterglow reported by MITSuME (Morita et al GCN Circ 20036) and LCOGT FTS (Guidorzi et al., GCN Circ. 20037). The estimated magnitude is 16.52. No correction has been made for the expected extinction corresponding to E(B-V) of 0.08 in the direction of the burst (Schlegel et al. 1998).
GCN 20042 table
GRB_name GRB161014A
GCN_number 20042
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20042 SUBJECT: GRB 161014A: TSHAO optical observations DATE: 16/10/15 00:07:46 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), I. Reva (Fesenkov Astrophysical Institute), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 161014A (Racusin et al., GCN 20035) with Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. We obtained several images in R filter starting on Oct. 14 (UT) 13:48:35. We detected the afterglow of GRB 161014A (Morita et al., GCN 20036; Guidorzi et al., GCN 20037; Xin et al., GCN 20038). Preliminary photometry of of combined the first observational set is following Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) 2016-10-14 13:48:35 0.07046 R 21*120 19.0 0.10 20.6 Photometry is based on nearby SDSS-DR9 stars (Lupton transformations): SDSS-DR9_id R(Lupton) J221053.78+072643.3 14.88 J221018.77+072726.4 14.05 J221023.66+073006.3 15.49 J221024.28+072335.5 15.75 J221050.55+072341.7 17.10
GCN 20043 table
GRB_name GRB161014A
GCN_number 20043
Detection_method Other
redshift 2.8230
Circular_text TITLE: GCN CIRCULAR NUMBER: 20043 SUBJECT: GRB 161014A: GTC spectroscopy DATE: 16/10/15 00:26:17 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), C. Thoene (IAA-CSIC), L. Izzo (IAA-CSIC), D.A. Kann (TLS Tautenburg), P. Pessev (IAC, ULL, GRANTECAN), A. Tejero (GRANTECAN) report on behalf of a larger collaboration: We observed the afterglow of GRB 161014A (Racusin et al., GCN 20035, Morita et al. GCN 20036, Guidorzi et al. GCN 20037, Xin et al. GCN 20038, Nakaoka et al. GCN 20039, D’Avanzo et al. GCN 20040, Mazaeva et al. GCN 20042) with OSIRIS at the 10.4m GTC telescope on La Palma (Spain). The observations started at 20:52 UT (with an average epoch at 8.8 hr after the burst) and consisted of 3 x 900 s spectra using grism R1000B, which covers the spectral region between 3700 and 7800 AA at a resolution of R ~ 1000. The spectrum has a low signal to noise ratio, but the preliminary reduction with archive calibrations still reveals prominent features due to Ly-alpha, SiII, CII, SiIV, CIV, AlII, and AlIII at a common redshift of z=2.823, which we identify as the redshift of the GRB.
GCN 20044 table
GRB_name GRB161014A
GCN_number 20044
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20044 SUBJECT: GRB161014A: NOT optical observations DATE: 16/10/15 00:35:17 GMT FROM: Kasper Elm Heintz at Univ. of Iceland and DARK/NBI K. E. Heintz (Univ. of Iceland and DARK/NBI), D. Xu (NAOC), D. Malesani (DARK/NBI and DTU Space), E. Poretti (INAF/OABr), J. Telting (NOT), A. de Ugarte Postigo (IAA-CSIC and DARK/NBI) and J. P. U. Fynbo (DARK/NBI) report on behalf of a larger collaboration: We observed the field of GRB 161014A (Racusin et al., GCN 20035) using the ALFOSC camera mounted at the 2.56m Nordic Optical Telescope (NOT). Observations started at 21:22:59 UT on 2016-10-14 (i.e., 8.85 hr after the trigger) and SDSS g-/r-/i-filter frames were obtained with 4x300 s in each filter in a cloudy weather. In the stacked r- and i-bands we clearly detect the optical afterglow of the burst (Morita et al., GCN 20036, Guidorzi et al., GCN 20037, Xin et al., GCN 20038, Nakaoka et al., GCN 20039 and Mazaeva et al., GCN 20042). We measure a magnitude of m(r) = 21.60 +/- 0.06 AB mag at a median time of 9.44 hr post-burst, calibrated with nearby SDSS stars.
GCN 20045 table
GRB_name GRB161014A
GCN_number 20045
Detection_method Swift-UVOT Det
ra 332.6477°
decl 7.4687°
redshift 2.8230
Circular_text TITLE: GCN CIRCULAR NUMBER: 20045 SUBJECT: GRB 161014A: Swift/UVOT Detection DATE: 16/10/15 10:59:41 GMT FROM: Samantha Oates at MSSL S. R. Oates (U. of Warwick) and J. L. Racusin (NASA/GSFC) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 161014A 4 ks after the BAT trigger (Racusin et al., GCN Circ. 20035). A source consistent with the optical position reported by MITSuME (Morita et al GCN Circ 20036) and LCOGT-FTS (Guidorzi et al., GCN Circ. 20037) is detected in the initial UVOT exposures. The lack of detection in the u and UV bands is consistent with the redshift of 2.823 reported by GTC (de Ugarte Postigo et al., GCN Circ. 20043). The preliminary UVOT position is: RA (J2000) = 22:10:35.46 = 332.64775 (deg.) Dec (J2000) = 7:28:07.3 = 7.46869 (deg.) with an estimated uncertainty of about 0.9 arc sec. (radius, 90% confidence). Preliminary magnitudes using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) are: Filter T_start(s) T_stop(s) Exp(s) Mag wh 4491 4690 197 20.4 +/- 0.3 wh 5929 6129 197 > 20.85 v 4903 5103 197 19.1 +/- 0.4 b 4286 5924 393 20.3 +/- 0.3 u 4081 23870 1630 > 20.9 w1 5314 23503 1968 > 21.0 m2 5109 18128 1163 > 20.8 w2 4698 6335 393 > 20.2 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 20046 table
GRB_name GRB161014A
GCN_number 20046
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 20046 SUBJECT: GRB 161014A: Continued MITSuME Akeno Optical Observation DATE: 16/10/15 11:33:51 GMT FROM: Taketoshi Yoshii at Tokyo Tech K.Morita, T.Fujiwara, Y. Saito, Y. Ono, T. Yoshii, H. Ohuchi, Y.Tachibana, Y. Yano, S. Harita, Y.Muraki, K.Saisho, T.Ozawa, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We have been observing the optical counterpart of GRB 161014A (J. L. Racusin et al., GCN Circular #20035) 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 2016-10-14 12:32:08 UT (46 sec after the burst) and we detected the optical counterpart in all three bands. The measured magnitudes were listed as follows. We obtained following results for the magnitudes. T0+[sec] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------------------------------------------------------- 46 12:34:48 270 16.67 +/- 0.13 15.69 +/- 0.08 15.40 +/- 0.07 376 13:03:53 1380 > 18.57 17.59 +/- 0.17 17.86 +/- 0.25 ------------------------------------------------------------------------------------------------------- T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 20047 table
GRB_name GRB161014A
GCN_number 20047
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20047 SUBJECT: GRB 161014A: AROMA-N Optical Observation DATE: 16/10/15 11:38:58 GMT FROM: Takanori Sakamoto at AGU Y. Kitaoka, T. Sakamoto, A. Yoshida (AGU) We observed the field of GRB 161014A detected by Swift (Racusin et al., GCN Circ. 20035) with the 12-inch AGU Robotic Optical Monitor for Astrophysical object - Narrow (AROMA-N) located at the Sagamihara campus of Aoyama Gakuin University. 20 images of 60 sec exposures were taken in the R filter starting from October 14 12:47:48 (UT) about 1200 seconds after the trigger and stopped on October 14 13:13:14 (UT). We do not detect the optical afterglow (Morita et al., GCN Circ. 20036; Guidorzi et al., GCN Circ. 20037; Xin et al., GCN Circ. 20038; Nakaoka et al., GCN Circ. 20039; D'Avanzo et al., GCN Circ. 20040; Mazaeva et al., GCN Circ. 20042; de Ugarte Postigo et al., GCN CIrc. 20043) both in the individual images and the stacked image. The estimated five sigma upper limit of the combined image (total exposure of 1200 sec) is ~15.9 mag using the USNO-B1 catalog.
GCN 20048 table
GRB_name GRB161014A
GCN_number 20048
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20048 SUBJECT: GRB 161014A: TNG optical observations DATE: 16/10/15 12:08:09 GMT FROM: Andrea Melandri at INAF-OAB A. Melandri, P. D'Avanzo (INAF-OAB), V. D'Elia (INAF/OAR & ASI/ASDC), W. Boschin, D. Carosati (INAF-TNG) report on behalf of the CIBO collaboration: We observed the field of GRB 161014A (Racusin et al., GCN 20035) with the 3.6m Telescopio Nazionale Galileo (TNG) equipped with DOLoRes. Observations were carried out in the r-sdss filter. Observations started on Oct 15 at 00:19:03 UT (~11.8 hours after the burst) and consist in a single image lasting 120 seconds. The optical afterglow (Morita et al., GCN 20036 and GCN 20046; Guidorzi et al., GCN 20037; Xin et al., GCN 20038; Nakaoka et al., GCN 20039; Mazaeva et al., GCN 20042; Heintz et al. GCN 20044; Kitaoka et al., GCN 20047) is detected with a magnitude r(AB) = 21.5 +/- 0.3 (calibrated against nearby SDSS stars).
GCN 20049 table
GRB_name GRB161014A
GCN_number 20049
Detection_method Swift-BAT Det
ra 332.6260°
decl 7.4670°
Circular_text TITLE: GCN CIRCULAR NUMBER: 20049 SUBJECT: GRB 161014A: Swift-BAT refined analysis DATE: 16/10/15 14:04:09 GMT FROM: Takanori Sakamoto at AGU S. D. Barthelmy (GSFC), 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), J. L. Racusin (NASA/GSFC), T. Sakamoto (AGU), M. Stamatikos (OSU), 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 161014A (trigger #717500) (Racusin, et al., GCN Circ. 20035). The BAT ground-calculated position is RA, Dec = 332.626, 7.467 deg which is RA(J2000) = 22h 10m 30.1s Dec(J2000) = +07d 28' 01.9" with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 13%. The mask-weighted light curve shows a complex structure starting at T-10 sec and ending at T+15 sec. T90 (15-350 keV) is 18.3 +- 2.8 sec (estimated error including systematics). The time-averaged spectrum from T-9.1 to T+12.5 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.47 +- 0.15. The fluence in the 15-150 keV band is 1.9 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.10 sec in the 15-150 keV band is 2.9 +- 0.6 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/717500/BA/
GCN 20050 table
GRB_name GRB161014A
GCN_number 20050
Detection_method Swift-XRT Other
ra 332.6476°
decl 7.4687°
redshift 2.8230
Circular_text TITLE: GCN CIRCULAR NUMBER: 20050 SUBJECT: GRB 161014A: Swift-XRT refined Analysis DATE: 16/10/15 14:31:20 GMT FROM: Phil Evans at U of Leicester B. Mingo (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), V. D'Elia (ASDC), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), D.N. Burrows (PSU), T.G.R. Roegiers (PSU) and J.L. Racusin report on behalf of the Swift-XRT team: We have analysed 5.5 ks of XRT data for GRB 161014A (Racusin et al. GCN Circ. 20035), from 108 s to 34.8 ks after the BAT trigger. The data comprise 48 s in Windowed Timing (WT) mode (the first 7 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. Using 5612 s of PC mode data and 8 UVOT images, we find an enhanced XRT position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 332.64760, +7.46873 which is equivalent to: RA (J2000): 22h 10m 35.42s Dec(J2000): +07d 28' 07.4" with an uncertainty of 1.4 arcsec (radius, 90% confidence). The light curve can be modelled with an initial power-law decay with an index of alpha=0.45 (+/-0.12), followed by a break at T+1757 s to an alpha of 1.59 (+0.14, -0.13). A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.83 (+0.11, -0.10). The best-fitting absorption column is 1.5 (+0.9, -0.8) x 10^22 cm^-2, at a redshift of 2.823, in addition to the Galactic value of 7.5 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 3.7 x 10^-11 (4.5 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Galactic foreground: 7.5 x 10^20 cm^-2 Intrinsic column: 1.5 (+0.9, -0.8) x 10^22 cm^-2 at z=2.823 Photon index: 1.83 (+0.11, -0.10) The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00717500. This circular is an official product of the Swift-XRT team.
GCN 20051 table
GRB_name GRB161014A
GCN_number 20051
Detection_method Fermi GBM Det
t_trigger 12:31:15.910 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 20051 SUBJECT: GRB 161014A: Fermi GBM observation DATE: 16/10/15 16:16:43 GMT FROM: Elisabetta Bissaldi at U.Innsbruk/IAPP E. Bissaldi (Politecnico & INFN Bari) reports on behalf of the Fermi GBM Team: "At 12:31:15.91 UT on 14 October 2016, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 161014A (trigger 498141079 / 161014522), which was also detected by the Swift/BAT (Racusin et al. 2016, GCN 20035). The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight at the GBM trigger time is 69 degrees. The GBM light curve shows multiple peaks with a duration (T90) of about 37 s (50-300 keV). The time-averaged spectrum from T0-6 s to T0+23 s is adequately fit by a power law function with an exponential high-energy cutoff. The power law index is -0.74 +/- 0.09 and the cutoff energy, parameterized as Epeak, is 167 +/- 15 keV. The event fluence (10-1000 keV) in this time interval is (5.4 +/- 0.3)E-06 erg/cm^2. The 1-sec peak photon flux measured starting from T0+7 s in the 10-1000 keV band is 5.7 +/- 0.3 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 20052 table
GRB_name GRB161014A
GCN_number 20052
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20052 SUBJECT: GRB 161014A: RATIR Optical and NIR Observations DATE: 16/10/15 23:51:01 GMT FROM: V. Zach Golkhou at ASU/RATIR V. Zach Golkhou (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC),William H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), 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), Harvey Moseley (GSFC), John Capone (UMD), and Vicki Toy (UMD) report: We observed the field of GRB 161014A (Racusin, et al., GCN 20035) 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 2016/10 15.20 to 2016/10 15.39 UTC (16.17 to 20.80 hours after the BAT trigger), obtaining a total of 2.72 hours exposure in the r and i bands and 1.22 hours exposure in the Z, Y, J, and H bands. For a source within the Swift-XRT error circle (Mingo, et al., GCN 20050), in comparison with the SDSS DR9 and 2MASS catalogs, we obtain the following detections and upper limits (3-sigma): r 22.89 +/- 0.12 i 22.24 +/- 0.10 Z 22.01 +/- 0.15 Y > 21.60 J 21.19 +/- 0.15 H > 20.48 This source is consistent with the source reported in Morita et al., (GCNs 20036, 20046), Guidorzi et al., (GCN 20037), Xin et al., (GCN 20038), Nakaoka et al., (GCN 20039), Mazaeva et al., (GCN 20042), and Melandri et al., (GCN 20048). 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 20058 table
GRB_name GRB161014A
GCN_number 20058
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 20058 SUBJECT: GRB 161014A: refined analysis of TSHAO optical observations DATE: 16/10/16 15:59:49 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Kusakin (Fesenkov Astrophysical Institute), I. Reva (Fesenkov Astrophysical Institute), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 161014A (Racusin et al., GCN 20035) with Zeiss-1000 (East) 1-m telescope of Tien Shan Astronomical Observatory. We obtained several images in R filter starting on Oct. 14 (UT) 13:48:35. Preliminary light curve of the afterglow (Morita et al., GCN 20036; Guidorzi et al., GCN 20037; Xin et al., GCN 20038; Nakaoka et al., GCN 20039; Mazaeva et al., GCN 20042; Heintz et al., GCN 20044) can be found at http://grb.rssi.ru/GRB161014A/GRB161014A_TSHAO_LC.png Photometry is based on nearby SDSS-DR9 stars used in GCN 20042 (Mazaeva et al.)
GCN 20059 table
GRB_name GRB161014A
GCN_number 20059
Detection_method Konus-Wind Det
t_trigger 12:31:28.321 UTC
redshift 2.8230
Circular_text TITLE: GCN CIRCULAR NUMBER: 20059 SUBJECT: Konus-Wind observation of GRB 161014A DATE: 16/10/16 18:14:06 GMT FROM: Dmitry Frederiks at Ioffe Institute D. Frederiks, S. Golenetskii, R.Aptekar, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A.Lysenko, A. Kozlova, and T. Cline, on behalf of the Konus-Wind team, report: The long GRB 161014A (Swift/BAT observation: Racusin et al., GCN 20035; Barthelmy et al., GCN 20049; Fermi GBM observation: Bissaldi, GCN 20051) triggered Konus-Wind at T0=45088.321 s UT (12:31:28.321). The light curve shows a multi-peaked pulse with a duration of ~25 s. A weak, soft pulse is also seen in the burst light curve around ~T0+95 s, which KW ecliptic latitude response is consistent with the position of GRB 161014A. The emission is seen up to ~3 MeV. As observed by Konus-Wind, the burst had a fluence of (4.7 ± 0.7)x10^-6 erg/cm2 and a 64-ms peak energy flux, measured from T0-0.032, of (1.3 ± 0.4)x10^-6 erg/cm2 (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+16.640 s) is best fit in the 20 keV - 5 MeV range by a cutoff power-law (CPL) function with the following model parameters: the photon index alpha = -1.15(-0.48,+0.73), and the peak energy Ep = 226(-79,+267) keV, chi2 = 92/78 dof. Fitting this spectrum with the GRB (Band) function yields the same alpha and Ep with only an upper limit on beta of -1.8, chi2 = 92/71 dof. Assuming the redshift z=2.823 (de Ugarte Postigo et al., GCN 20043) and a standard cosmology model with H_0 = 70 km/s/Mpc, Omega_M = 0.3, and Omega_Lambda = 0.7, we estimate the following rest-frame parameters: the isotropic energy release E_iso is ~8.2x10^52 erg, the peak luminosity L_iso is ~8.7x10^52 erg/s, and the rest-frame peak energy of the time-integrated spectrum, Ep,i, is ~860 keV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB161014_T45088/ All the quoted errors are estimated at the 90% confidence level. All the presented results are preliminary.
GCN 20061 table
GRB_name GRB161014A
GCN_number 20061
Detection_method Swift-BAT Det
redshift 2.8230
Circular_text TITLE: GCN CIRCULAR NUMBER: 20061 SUBJECT: GRB 161014A: VLT/X-shooter redshift confirmation DATE: 16/10/17 12:23:39 GMT FROM: Jonatan Selsing at DARK/NBI J. Selsing (DARK/NBI), K. E. Heintz (Univ. of Iceland and DARK/NBI), D. Malesani (DARK/NBI and DTU Space), D. Xu (NAOC), A. de Ugarte Postigo (IAA-CSIC and DARK/NBI), N. R. Tanvir (Univ. Leicester), K. Wiersema (Univ. Leicester) and J. P. U. Fynbo (DARK/NBI) report on behalf of a larger collaboration: We have observed the optical afterglow of GRB 161014A (Racusin et al., GCN 20035; Morita et al. GCN 20036; Guidorzi et al., GCN 20037; D'Avanzo et al., GCN 20040), with the cross-dispersed echelle spectrograph, X-shooter, mounted at VLT/UT2. Observations started 11.6 hours after the BAT trigger and consist of 4 x 1200 s integration time in the three spectral arms of X-shooter, covering 3000 - 21000 AA. The afterglow continuum is detected in all arms at high significance. A broad absorption trough from Lyman alpha is visible at 4650 AA, along with a number of absorption lines spread across the rest of the afterglow continuum, among which we identity absorption features due to Mg II, Si II, C II, C IV, Al II, Al III, Fe II, all at a consistent redshift of z = 2.823, confirming the redshift reported by de Ugarte Postigo et al. (GCN 20043). We acknowledge excellent support from the ESO observing staff in Paranal, in particular Jonathan Smoker, Thomas Rivinius, Marcela Espinoza and Dimitri Gadotti
GCN 20066 table
GRB_name GRB161014A
GCN_number 20066
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20066 SUBJECT: GRB 161014A: Continued RATIR Optical and NIR Observations DATE: 16/10/17 23:23:29 GMT FROM: V. Zach Golkhou at ASU/RATIR V. Zach Golkhou (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), 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), Harvey Moseley (GSFC), John Capone (UMD), and Vicki Toy (UMD) report: We observed the field of GRB 161014A (Racusin, et al., GCN 20035) 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 2016/10 16.16 to 2016/10 16.26 UTC (39.29 to 41.69 hours after the BAT trigger), obtaining a total of 1.78 hours exposure in the r and i bands and 0.75 hours exposure in the Z, Y, J, and H bands. For a source within the Swift-XRT error circle (Mingo, et al., GCN 20050) and reported in Golkhou, et al. (GCN 20052), in comparison with the SDSS DR9 and 2MASS catalogs, we obtain the following detection and upper limits (3-sigma): r > 23.79 i 23.57 +/- 0.32 Z > 22.72 Y > 22.57 J > 22.20 H > 21.91 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 20115 table
GRB_name GRB161014A
GCN_number 20115
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 20115 SUBJECT: GRB 161014A: 15 GHz upper limits from AMI DATE: 16/10/27 21:35:51 GMT FROM: Kunal Mooley at Oxford U K. P. Mooley, T. D. Staley, R. P. Fender (Oxford), G. E. Anderson (Curtin), T. Cantwell (Manchester), D. Titterington, S. H. Carey, J. Hickish, Y. C. Perrott, N. Razavi-Ghods, P. Scott (Cambridge), K. Grainge, A. Scaife (Manchester) The AMI Large Array robotically triggered on the Swift alert for GRB 161014A (Racusin et al., GCN 20035) as part of the 4pisky program, and subsequent follow up observations were obtained up to 10 days post-burst. Our observations at 15 GHz on 2016 Oct 14.67, Oct 15.85, Oct 17.85, and Oct 20.85 (UT) do not reveal any radio source at the XRT location (Mingo et al., GCN 20050), with 3sigma upper limits of 225 uJy, 285 uJy, 129 uJy, and 228 uJy respectively. We thank the AMI staff for scheduling these observations. The AMI-GRB database is a log of all GRB follow up observations with the AMI, and is available at http://4pisky.org/ami-grb/.