GRB140206A

This page lists all entries on GRB140206A in GRBweb

Summary Fermi GBM IPN Swift GCN 15784 GCN 15785 GCN 15786 GCN 15787 GCN 15788 GCN 15789 GCN 15792 GCN 15793 GCN 15794 GCN 15795 GCN 15796 GCN 15797 GCN 15798 GCN 15799 GCN 15800 GCN 15801 GCN 15802 GCN 15803 GCN 15805 GCN 15806 GCN 15807 GCN 15813 GCN 15835

Summary table
Variable Value Source
GRB_name_Fermi GRB140206304
T0 7:17:20 UTC GCN_circulars,Swift Det
ra 145.3344° Swift
decl 66.7607° Swift
pos_error 6.47e-05° Swift
T90 27.264 s Fermi_GBM
T90_error 1.243 s Fermi_GBM
T90_start 7:18:16.495 UTC Fermi_GBM
fluence 1.55e-05 erg/cm² Fermi_GBM
fluence_error 7.48e-08 erg/cm² Fermi_GBM
redshift 2.7300 GCN_circulars,Optical
T100 93.6 s
GBM_located False
mjd 56694.30370370371 GCN_circulars,Swift Det
Fermi GBM table
GRB_name_Fermi GRB140206304
trigger_name bn140206304
ra 145.3342°
decl 66.7608°
pos_error 1.99e+00°
datum 2014-02-06
t_trigger 7:18:15.983 UTC
T90 27.264 s
T90_error 1.243 s
T90_start 7:18:16.495 UTC
fluence 1.55e-05 erg/cm²
fluence_error 7.48e-08 erg/cm²
flux_1024 1.74e+01 erg/cm²/s
flux_1024_error 4.78e-01 erg/cm²/s
flux_1024_time 4.99e+00 erg/cm²/s
flux_64 2.42e+01 erg/cm²/s
flux_64_error 2.13e+00 erg/cm²/s
IPN table
GRB_name GRB140206A
ra 145.3500°
decl 66.7500°
pos_error 5.00e-02°
redshift 2.7300
Swift table
GRB_name GRB140206A
t_trigger 7:17:20 UTC
ra 145.3344°
decl 66.7607°
pos_error 6.47e-05°
T90 93.6 s
fluence 1.60e-05 erg/cm²
redshift 2.7300
GCN 15784 table
GRB_name GRB140206A
GCN_number 15784
Detection_method Swift Det
t_trigger 7:17:20 UTC
ra 145.3500°
decl 66.7500°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15784 SUBJECT: GRB 140206A: Swift detection of a burst DATE: 14/02/06 07:49:38 GMT FROM: Scott Barthelmy at NASA/GSFC A. Y. Lien (NASA/GSFC/ORAU), S. D. Barthelmy (GSFC), M. M. Chester (PSU), V. D'Elia (ASDC), D. Malesani (DARK/NBI), A. Maselli (INAF-IASFPA), K. L. Page (U Leicester), D. M. Palmer (LANL) and M. H. Siegel (PSU) report on behalf of the Swift Team: At 07:17:20 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140206A (trigger=585834). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 145.350, +66.750 which is RA(J2000) = 09h 41m 24s Dec(J2000) = +66d 45' 01" with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a multi-peaked structure with a duration of about 80 sec. The peak count rate was ~19000 counts/sec (15-350 keV), at ~60 sec after the trigger. The XRT began observing the field at 07:18:04.0 UT, 43.9 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 145.33438, 66.76074 which is equivalent to: RA(J2000) = 09h 41m 20.25s Dec(J2000) = +66d 45' 38.7" with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 44 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 4.79 x 10^20 cm^-2 (Kalberla et al. 2005). The initial flux in the 2.5 s image was 9.62e-09 erg cm^-2 s^-1 (0.2-10 keV). UVOT results are not available at this time. Burst Advocate for this burst is A. Y. Lien (yarleen AT gmail.com). 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 15785 table
GRB_name GRB140206A
GCN_number 15785
Detection_method INTEGRAL
t_trigger 7:17:26 UTC
ra 145.3043°
decl 66.7652°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15785 SUBJECT: GRB140206A: a long GRB detected by INTEGRAL DATE: 14/02/06 08:10:46 GMT FROM: Diego Gotz at CEA D. Gotz (IASF Milano) S.Mereghetti (IASF-Milano), E.Bozzo, C.Ferrigno, M. Tuerler (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the IBAS Localization Team report: a long gamma ray burst lasting at least 60 s 0.8 s has been detected by IBAS in the IBIS/ISGRI data at 07:17:26 UT of February 6th. The refined coordinates (J2000) are: R.A.= 145.3043 deg DEC.= +66.7652 deg with an uncertainty of 0.8 arcmin (90% c.l.). This position is consistent with the Swift/XRT one reported for the same event (Lien et al., GCN 15784). The burst has been detected at the very beginning of the INTEGRAL orbit, just outside the radiation belts. Therefore the data are polluted by a high particle background, implying a high level of saturation of the IBIS/ISGRI telemetry. Hence no detailed information about the GRB duration can be derived at this stage. A preliminary lower limit on its fluence is 2x10e-6 erg/cmsq in the 20-200 keV energy band. A plot of the light curve will be posted at http://ibas.iasf-milano.inaf.it/IBAS_Results.html
GCN 15786 table
GRB_name GRB140206A
GCN_number 15786
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15786 SUBJECT: GRB140206A - Optical afterglow candidate DATE: 14/02/06 09:42:27 GMT FROM: Arto Oksanen at Nyrola Obs., Finland A. Oksanen, P. Kehusmaa and C. Harlingten on behalf of Searchlight Observatory Network report: We detect an afterglow candidate on Rc filtered images taken at 2014-02-06T08:33:09 with a 40 cm robotic telescope located in New Mexico, USA. R.A. = 09 41 20 (J2000) Decl = 66 45 38 The position matches with the XRT position given by A. Y. Lien et. al (GCN 15784). Approximate magnitude R=18, seem to be fading. Observations and analysis is ongoing.
GCN 15787 table
GRB_name GRB140206A
GCN_number 15787
Detection_method Optical
ra 145.3343°
decl 66.7607°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15787 SUBJECT: GRB 140206A: Swift/UVOT optical detection DATE: 14/02/06 11:03:15 GMT FROM: Samantha Oates at MSSL S. R. Oates (MSSL-UCL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team: UVOT took a finding chart exposure of 150 seconds with the White filter starting 54 seconds after the BAT trigger. There is a candidate afterglow in the finding chart image: RA (J2000) 9:41:20.24 = 145.33433 Dec (J2000) +66:45:38.5 = 66.76069 with an estimated uncertainty of 0.5 arcsec (radius, 90% confidence). This position is consistent with the XRT position (Lien et al., GCN 15784) and the optical afterglow position reported by Oksanen et al (GCN 15786). The estimated magnitude is 15.76 with a 1-sigma error of about 0.03. No correction has been made for the expected extinction corresponding to E(B-V) of 0.12.
GCN 15788 table
GRB_name GRB140206A
GCN_number 15788
Detection_method Optical
ra 145.3342°
decl 66.7605°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15788 SUBJECT: GRB 140206A: MASTER OT detection DATE: 14/02/06 11:08:00 GMT FROM: Vladimir Lipunov at Moscow State U/Krylov Obs V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov Blagoveschensk Educational State University, Blagoveschensk E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina, N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov, D.Denisenko, A.Sankovich Sternberg Astronomical Institute, Moscow State University K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk Irkutsk State University V.Krushinski, I.Zalozhnih, A. Popov Ural Federal University, Kourovka A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik Kislovodsk Solar Station of the Pulkovo Observatory 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 Blagoveschensk was pointed to the GRB140206A (Lien et. al GCN 15784 , Gotz et. al GCN 15784) 2h 16m (8153 s) after trigger time at 2014-02-06 09:33:13 UT directly after sunset. On our first sets we found optical transient Oksanen et. al. GCN 15786. The coordinate is: RA= 09h 41m 20.21s DEC= +66d 45m 37.7s ERROR= 0.5 arcsec Mag=18.5 +- 0.25m Our unfiltered magnitude is calibrated by USNO B1.0 catalog by a parity 0.8R + 0.2B. The message may be cited.
GCN 15789 table
GRB_name GRB140206A
GCN_number 15789
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15789 SUBJECT: GRB 140206A: Nanshan optical observations DATE: 14/02/06 13:55:07 GMT FROM: Dong Xu at DARK/NBI D. Xu (DARK/NBI), G.-J. Feng, J. Xu, A. Esamdin, L. Ma (XAO) report: We observed the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) using the 1m telescope located on Mt. Nanshan, Xinjiang, China. Observations started at 12:30:16 UT on 2014-02-06 (i.e., 5.216 hr after the burst), and a series of R-band frames were obtained. The optical afterglow (Oksanen et al., GCN 15786; Oates & Lien, GCN 15787) is clearly detected in each of our frames, and it decayed from M(R)=18.48+/-0.10 to m(R)=18.64+/-0.10 from 5.40 hr to 5.71 hr post-burst, calibrated with two nearby SDSS stars. Compared with the previous measurements in GCNs 15786 & 15788, it shows that so far the afterglow has been decaying rather slowly and thus spectroscopy may be doable even for a 2m class telescope in the coming hours. Further observations are ongoing.
GCN 15792 table
GRB_name GRB140206A
GCN_number 15792
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15792 SUBJECT: GRB 140206A: ISON-Ussuriysk optical observations DATE: 14/02/06 15:54:46 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volnova (IKI), A. Stepura (UAFO, ISON), A. Matkin (UAFO, ISON), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the afterglow (Oksanen et al., GCN 15786; Oate et al., GCN 15787) of the Swift and INTEGRAL GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) with VT-50 (0.5m) telescope of UAFO/ISON-Ussuriysk observatory starting on Feb. 6 (UT) 09:20:05, i.e. ~2 hours after burst trigger. We took unfiltered images of 30s exposures. In stacked frames we clearly detect afterglow. A preliminary photometry of the afterglow is following: T_start T0+ Filter, Exposure, OT, OT_err (UT) (mid, d) (s) 2014-02-06T09:20:39 0.08783 none 9*30 17.76 0.24 2014-02-06T10:52:26 0.15309 none 19*30 18.06 0.08 The photometry is based on reference stars SDSS-DR9, (R mag, transformation by Lupton 2005) N SDSS_id R(Lupton)errR 1 J094123.75+664429.9 15.441+/-0.013 2 J094126.54+664410.8 13.837+/-0.014 3 J094131.29+664857.0 13.972+/-0.011 Observations continuing. The finding chart can be found in http://grb.rssi.ru/GRB140206A/grb140206A_VT50_fc.png
GCN 15793 table
GRB_name GRB140206A
GCN_number 15793
Detection_method Swift-XRT Det
ra 145.3345°
decl 66.7610°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15793 SUBJECT: GRB 140206A: Enhanced Swift-XRT position DATE: 14/02/06 16:16:45 GMT FROM: Phil Evans at U of Leicester J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team. Using 2549 s of XRT Photon Counting mode data and 3 UVOT images for GRB 140206A, 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 = 145.33452, +66.76101 which is equivalent to: RA (J2000): 09h 41m 20.29s Dec (J2000): +66d 45' 39.6" with an uncertainty of 1.4 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 15794 table
GRB_name GRB140206A
GCN_number 15794
Detection_method Swift-XRT Other
redshift 0.6000
Circular_text TITLE: GCN CIRCULAR NUMBER: 15794 SUBJECT: GRB 140206A: theoretical prediction of redshift and of supernova occurrence DATE: 14/02/06 18:05:40 GMT FROM: Remo Rufinni at ICRA R. Ruffini, C.L. Bianco, M. Enderli, M. Kovacevic, M. Muccino, A.V. Penacchioni, G.B. Pisani, J.A. Rueda, Y. Wang report: The late Swift/XRT observations of GRB 140206A (1,2) evidences the fullfillment of the IGC paradigm (3,4). A preliminary overlapping of its X-ray (0.3-10 keV in rest-frame) luminosity with the one of GRB 090618, namely an IGC prototype (5), gives an estimate of the redshift of z~0.6 (see Fig. 1 ). As a consequence, a supernova associated to GRB 140206A is expected to emerge after 16 days after the trigger. Continuous monitoring and complementary observations in all possible wavelengths are encouraged. References: (1) Lien et al., GCN 15784 (2) Osborne et al., GCN 15793 (3) Rueda & R. Ruffini, ApJLett, 758, L7 (2012) (4) Pisani et al., A&A, 552, L5 (2013) (5) Izzo et al., A&A, 548, L5 (2012)
GCN 15795 table
GRB_name GRB140206A
GCN_number 15795
Detection_method Swift-UVOT Det
ra 145.3344°
decl 66.7607°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15795 SUBJECT: GRB 140206A: Swift/UVOT Detection DATE: 14/02/06 18:20:25 GMT FROM: Samantha Oates at MSSL S. R. Oates (UCL-MSSL) and A. Y. Lien (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 140206A 52 s after the BAT trigger (Lien et al., GCN Circ. 15784). A source consistent with the XRT position (Osborne et al. GCN Circ. 15793) and the optical positions reported by Oksanen et al. (GCN 15786) and Yurkov et al. (GCN 15788) is detected in the initial UVOT exposures. The lack of detections in the UV filters suggests a redshift ~2 - 3. The preliminary UVOT position is: RA (J2000) = 09:41:20.26 = 145.33442 (deg.) Dec (J2000) = +66:45:38.6 = 66.76072 (deg.) with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence). Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are: Filter T_start(s) T_stop(s) Exp(s) Mag white 52 202 147 15.88 +/- 0.02 v 596 616 20 15.75 +/- 0.11 b 522 542 20 16.51 +/- 0.09 u 264 514 246 16.18 +/- 0.04 w1 645 17944 963 >20.9 m2 16137 24450 1607 >21.2 w2 21898 22798 886 >21.0 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 15796 table
GRB_name GRB140206A
GCN_number 15796
Detection_method Fermi GBM Det
t_trigger 7:18:15.980 UTC
Circular_text TITLE: GCN CIRCULAR NUMBER: 15796 SUBJECT: GRB 140206A: Fermi GBM detection DATE: 14/02/06 18:29:24 GMT FROM: Narayana Bhat at U Alabama/Huntsville/GBM A. von Kienlin (MPE) and P. N. Bhat (UAH) report on behalf of the Fermi GBM Team: "At 07:18:15.98 UT on 06 February 2014, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 140206A (trigger 413363898 / 140206304), which was also detected by the Swift (Lien et al. 2014, GCN 15784) The GBM on-ground location is consistent with the Swift position. The angle from the Fermi LAT boresight is 123 degrees. The GBM light curve shows a single pulse with a duration (T90) of about 27 s (50-300 keV). The time-averaged spectrum from T0-0.5 s to T0+14.3 s is best fit by a Band function with Epeak = 120 +/- 6 keV, alpha = 0.2 +/- 0.1, and beta = -2.4 +/-0.1. The event fluence (10-1000 keV) in this time interval is (1.47 +/- 0.03)E-05 erg/cm^2. The 1-sec peak photon flux measured starting from T0+4.9 s in the 10-1000 keV band is 17.4 +/- 0.5 ph/s/cm^2. The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN 15797 table
GRB_name GRB140206A
GCN_number 15797
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15797 SUBJECT: GRB 140206A: T100 observations DATE: 14/02/06 19:34:14 GMT FROM: Eda Sonbas at NASA/GSFC E. Sonbas (Adiyaman Univ.), T. Guver (Istanbul Univ.), U. Temiz (Cukurova Univ.), E. Gogus (Sabanci Univ.), M. Kocak (TUG), O. Erece (Akdeniz Univ.), Z. Eker (Akdeniz Univ.) report on behalf of a larger collaboration We observed the field of Swift GRB 140206A (Lien et al., GCN#15784) with the 1.0 meter T100 telescope (Bakirlitepe, TUBITAK National Observatory, Turkey), starting February, 06, 16:33:24 UT (~ 9.268 hours after the trigger). Observations were carried out in the R filter under good weather conditions. The afterglow is clearly detected in 300 s in the R band images at a position that is consistent with Oksanen et al. GCN#15786 and Oates et al., GCN#15787 Using USNO-B1 star USNO-B1 1567-0128093 (R.A.=9:41:23.33, Dec=+66:44:32.31) in the field, the magnitudes of the OT were estimated as follows; t-t0 (hr) exp.(s) filt mag err (+/-) 9.590 300 R 18.65 0.05 9.689 300 R 18.77 0.06 9.788 300 R 18.75 0.06 10.380 300 R 18.89 0.06 Further observations using the same filter are ongoing. We are grateful to TUBITAK National Observatory for prompt scheduling the observations and technical support.
GCN 15798 table
GRB_name GRB140206A
GCN_number 15798
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15798 SUBJECT: GRB 140206A: Swift-XRT refined Analysis DATE: 14/02/06 20:57:35 GMT FROM: Alessandro Maselli at INAF/IASF Palermo A. Maselli (INAF-IASFPA), A. Y. Lien (NASA/GSFC/ORAU) and P. A. Evans (U. Leicester) report on behalf of the Swift-XRT team: We have analysed 14 ks of XRT data for GRB 140206A (Lien et al. GCN Circ. 15784), from 33 s to 30.2 ks after the BAT trigger. The data comprise 1.2 ks in Windowed Timing (WT) mode (the first 9 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 Osborne et al. (GCN Circ. 15793). The light curve shows initial flaring activity with two flares peaking at about 61 s and 223 s after the trigger. The underlying emission can be modelled with a broken power-law decay: a flat decay with an index alpha=0.756 (+0.026, -0.028), a break at T+10.7 ks and a late-time decay with an index 1.31 (+0.15, -0.12). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.762 (+/-0.028). The best-fitting absorption column is 1.25 (+/-0.07) x 10^21 cm^-2, in excess of the Galactic value of 4.8 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.95 (+0.08, -0.07) and a best-fitting absorption column of 1.22 (+0.19, -0.18) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.8 x 10^-11 (4.9 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.22 (+0.19, -0.18) x 10^21 cm^-2 Galactic foreground: 4.8 x 10^20 cm^-2 Excess significance: 6.6 sigma Photon index: 1.95 (+0.08, -0.07) If the light curve continues to decay with a power-law decay index of 1.31, the count rate at T+24 hours will be 0.088 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.3 x 10^-12 (4.3 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/00585834. This circular is an official product of the Swift-XRT team.
GCN 15799 table
GRB_name GRB140206A
GCN_number 15799
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15799 SUBJECT: GRB 140206A: TNG optical observations DATE: 14/02/06 21:44:59 GMT FROM: Paolo D'Avanzo at INAF-OAB P. D'Avanzo, S. Covino, A. Melandri (INAF/OAB) L. Di Fabrizio (INAF/TNG) report on behalf of the CIBO collaboration: We observed the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al. GCN 15785) using the DOLORES camera on the 3.6-m TNG Telescope at Canary Islands. The optical afterglow (Oates & Lien GCN 15787; Yurkov et al. GCN 15788; Xu et al. GCN 15789; Volnova et al. GCN 15792; Oates & Lien GCN 15795; Sonbas et al. GCN 15797) is clearly detected with R = 18.7 +/- 0.1 (calibrated against the USNOB1 catalogue) at t-t0 = 12.52 hours. Further observations are ongoing.
GCN 15800 table
GRB_name GRB140206A
GCN_number 15800
Detection_method Optical
redshift 2.7300
Circular_text TITLE: GCN CIRCULAR NUMBER: 15800 SUBJECT: GRB 140206A: NOT redshift DATE: 14/02/06 21:52:48 GMT FROM: Daniele Malesani at Dark Cosmology Centre, Niels Bohr Inst D. Malesani, D. Xu, J. P. U. Fynbo (DARK/NBI), A. de Ugarte Postigo (IAA/CSIC and DARK/NBI), S. Schulze (PUC and MCSS), A. Finoguenov (U. Helsinki), P. Jakobsson (U. Iceland), A. Melandri (INAF/OABr), A. Cucchiara (NASA/GSFC), report on behalf of a larger collaboration: We observed the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785; von Kienlin & Bhat, GCN 15796) with the Nordic Optical Telescope (NOT) equipped with ALFOSC. Observations started at 19:56 UT on February 6 (i.e., 12.66 hr after the burst). We first obtained a 100-s image in R band. We clearly detect the source reported in Oksanen et al. (GCN 15786). The source has faded to 19.15 +/- 0.10 mag (Vega magnitude), based on nearby USNO stars. We aso obtained an optical spectrum, with a total exposure of 2 x 1800 s, using grism #4 and a blocking filter covering the wavelength range 3750 - 9000 AA at a resolution of 8.1 AA. The mid exposure time is 13.6 hr after the GRB. We detect several absorption lines which we interpret as due to Lyalpha, Si II, C II, C IV, Al II, Fe II at a common redshift of 2.73. This measurement is not consistent with the predicted theoretical value by Ruffini et al. (GCN 15794). We thank Carlos Perez, John Teltin, and Amanda Djupvik (NOT) for excellent support with the observations. [GCN OPS NOTE(07feb14): The Troja reference was corrected to the von Kienlin & & Bhat reference.]
GCN 15801 table
GRB_name GRB140206A
GCN_number 15801
Detection_method Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 15801 SUBJECT: GRB 140206A: Optical Observations via Virtual Telescope DATE: 14/02/06 22:21:53 GMT FROM: Gianluca Masi at Bellatrix Astronomical Obs G. Masi (Ceccano, Italy) and F. Nocentini (Frosinone, Italy) report: On Feb. 6.9216 2014 UT, we imaged the field around GRB 140206A (Lien et. al GCN 15784 , Gotz et. al GCN 15784) remotely using the the 0.43m-f/6.8 robotic unit part of the Virtual Telescope robotic facility in Italy. The source is visible on 300 seconds unfiltered CCD images at the following coordinates (J2000): R.A. = 09 41 20.23 Decl. +66 45 38.5 We also performed photometry, assuming R-mags from UCAC-4 for the stars in the field, getting an estimate for the magnitude of 18.9CR). Observations are ongoing. This message can be cited
GCN 15802 table
GRB_name GRB140206A
GCN_number 15802
Detection_method Optical
redshift 2.7400
Circular_text TITLE: GCN CIRCULAR NUMBER: 15802 SUBJECT: GRB 140206A: TNG redshift confirmation DATE: 14/02/06 22:52:54 GMT FROM: Valerio D'Elia at ASDC V. D'Elia (INAF/OAR & ASI/ASDC), P. D'Avanzo, S. Covino, A. Melandri (INAF-OAB), S. D. Vergani (CNRS/GEPI), L. Di Fabrizio (INAF/TNG) report on behalf of the CIBO collaboration: We report further observations of the field of GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785) with the Telescopio Nazionale Galileo (TNG) equipped with DOLORES. We obtained a spectrum of the optical source reported in D'Avanzo et al. (GCN Circ. 15799), with a total exposure of 1800 s, using the grism LR_B covering the wavelength range 3000 - 8000 AA. The observation started at 2014-02-06T19:53:07, i.e., ~12.6 hrs after the GRB. We detect several absorption lines which we interpret as due to Ly-alpha, NV, Si II, C II, SiIV, C IV, Al II, AlII and Fe II at a common redshift of 2.74. In addition, we also detect at the same redshift fine structure lines from excited levels of SiII and FeII, confirming that this is the redshift of the GRB host galaxy. Our result is in perfect agreement with the reported value by Malesani et al. (GCN 15800) Finally, we also detect a strong intervening Ly-alpha absorber at z~2.32 ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program.
GCN 15803 table
GRB_name GRB140206A
GCN_number 15803
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 15803 SUBJECT: GRB 140206A: MITSuME Akeno detection of the optical counterpart DATE: 14/02/07 04:33:05 GMT FROM: Yoichi Yatsu at Tokyo Tech. Y. Saito, T. Yoshii, Y. Tachibana, S. Kurita, K. Ito, R. Usui, K. Ishikawa, T. Tanigawa, Y. Yano, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We observed the field of GRB 140206A (A. Y. Lien et al., GCNC 15784) with the optical three color (g, Rc, and Ic) CCD cameras mounted on the MITSuME 50 cm telescope of Akeno Observatory, Yamanashi, Japan. The observation started on 2014-02-06 15:46:53 UT ( ~8.5 hour after the burst) and we detected the previously reported afterglow. The measured magnitudes were listed as follows. T0+[hour] MID-UT T-EXP[sec] g' Rc Ic ------------------------------------------------------------ ----------------------------------------- ~8.5 17:36:31 199x60 20.74+/-0.14 18.88+/-0.08 18.37+/-0.10 ------------------------------------------------------------ ----------------------------------------- (The photon flux were calibrated by SDSS(g') and GSC2.3(Rc, Ic) catalog.)
GCN 15805 table
GRB_name GRB140206A
GCN_number 15805
Detection_method Swift-BAT Det
ra 145.3210°
decl 66.7620°
Circular_text TITLE: GCN CIRCULAR NUMBER: 15805 SUBJECT: GRB 140206A, Swift-BAT refined analysis DATE: 14/02/07 21:56:28 GMT FROM: Amy Lien at GSFC T. Sakamoto (AGU), 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 (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (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 140206A (trigger #585834) (Lien, et al., GCN Circ. 15784). The BAT ground-calculated position is RA, Dec = 145.321, 66.762 deg which is RA(J2000) = 09h 41m 16.9s Dec(J2000) = +66d 45' 42.7" with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows a multi-peaked structure with roughly three main pulse durations. The first pulse duration starts at ~T-15 and ends at ~T+25 sec, and consists of roughly three to four peaks. The second one starts at ~T+50 sec, peaks at ~T+60 sec, and ends at ~T+90 sec. The third weaker pulse peaks at ~T+210 sec, with a long low-level tail out to T+400 sec. T90 (15-350 keV) is 93.6 +- 13.8 sec (estimated error including systematics). The time-averaged spectrum from T-37.2 to T+256.1 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.04 +- 0.15, and Epeak of 100.9 +- 14.5 keV (chi squared 52.76 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 1.6 +- 0.03 x 10^-5 erg/cm2 and the 1-sec peak flux measured from T+60.80 sec in the 15-150 keV band is 19.4 +- 0.5 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.58 +- 0.03 (chi squared 91.21 for 57 d.o.f.). 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/585834/BA/
GCN 15806 table
GRB_name GRB140206A
GCN_number 15806
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15806 SUBJECT: GRB 140206A: Liverpool Telescope optical afterglow observations DATE: 14/02/08 09:59:29 GMT FROM: Drejc Kopac at Math Phys U,Slovenia D. Kopac, A. Gomboc (U. Ljubljana), C. Guidorzi (U. Ferrara), A. Melandri (INAF-OAB), I. A. Steele, C. G. Mundell (LJMU), on behalf of a large collaboration report: The 2-m Liverpool Telescope automatically observed Swift-INTEGRAL-Fermi GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785), starting at 07:19:30 UT (~2.2 min after the burst trigger). We clearly detect the fading optical afterglow at the position reported by Oksanen et al. (GCN 15786). In our first 10 sec frame, we estimate the magnitude r' = 14.97 +- 0.02 at t_mid = 135 sec since the Swift/BAT trigger time. The magnitude is calibrated against nearby SDSS stars.
GCN 15807 table
GRB_name GRB140206A
GCN_number 15807
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15807 SUBJECT: GRB 140206A: Mondy optical observations DATE: 14/02/08 16:11:34 GMT FROM: Alexei Pozanenko at IKI, Moscow A. Volnova (IKI), E. Klunko (ISTP), M. Eselevich (ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the afterglow (Oksanen et al., GCN 15786; Oates et al., GCN 15787) of the Swift/INTEGRAL/Fermi GRB 140206A (Lien et al., GCN 15784; Gotz et al., GCN 15785, Kienlin et al., GCN 15796) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Feb. 6 (UT) 14:15. We clearly detect afterglow in each frame of 60 s exposure. A preliminary photometry of the afterglow is following: date Filter UT start Exp,s t-T0,d OT err 2014-02-06 R 14:15:21 120 0.29098 18.73 0.05 2014-02-06 R 14:31:29 60 0.30185 18.59 0.07 2014-02-06 R 15:02:15 60 0.32321 18.61 0.07 2014-02-06 R 18:14:26 60 0.45667 19.01 0.08 2014-02-06 R 18:53:29 60 0.48379 19.29 0.09 The photometry is based on reference stars SDSS-DR9, (R mag, transformation by Lupton 2005) N SDSS_id R(Lupton)errR 4 J094058.58+664752.4 18.030 0.022 5 J094107.93+664422.0 19.066 0.028
GCN 15813 table
GRB_name GRB140206A
GCN_number 15813
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15813 SUBJECT: GRB 140206A: Bassano Bresciano Observatory optical upper limit DATE: 14/02/10 08:51:22 GMT FROM: Ulisse Quadri at Bassano Bresciano Obs U.Quadri, L.Strabla and R.Girelli report: We imaged the field of GRB 140206A detected by SWIFT(trigger 585834) with the robotic telescope of (IAU station 565) Bassano Bresciano Observatory, Italy (member of ISSP:Italian Supernovae Search Project) The observations started 85h 35m after the GRB trigger, with our schmidt telescope D=320/400 mm F/D=3.1. Weather conditions were good. We co-added 2 series of 15 exposures of 120 sec each. We did not found any optical counterpart in the error box of the XRTcandidate. (Lien et. al GCN 15784 , Gotz et. al GCN 15784) Start End Vlim 85h 35m 86h 47m 18.5 Magnitudes were estimated with the USNOB1.0 cat. and are not corrected for galactic dust extinction. The images are available at: http://www.osservatoriobassano.org/GRB.asp The message may be cited.
GCN 15835 table
GRB_name GRB140206A
GCN_number 15835
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 15835 SUBJECT: GRB140206A: Discovery Channel Telescope Optical Detection DATE: 14/02/14 21:57:28 GMT FROM: Vicki Toy at UMD V. Toy (UMD), S.B. Cenko (NASA-GSFC), A. Kutyrev (NASA-GSFC), J. Capone (UMD), E. Troja (NASA-GSFC), A. Cucchiara (NASA-GSFC), S. Veilleux (UMD), and S. Gezari (UMD) report on behalf of a larger collaboration: We observed the field of GRB140206A (Swift trigger 585834, Lien et al., GCN 15784) with the Large Monolithic Imager (LMI) on the recently commissioned 4.3m Discovery Channel Telescope (DCT) at Happy Jack, AZ from 2014/02/13 5:33 to 2014/02/13 6:03 UTC (mean epoch of 6.9 d after the Swift trigger). A source is clearly detected at the location of the optical afterglow (Oksanen et al, GCN 15786). Using nearby point sources from SDSS for calibration, we measure r' = 21.69 +/- 0.07 (AB). This value is not corrected for Galactic extinction in the direction of the GRB. We thank the staff of the Discovery Channel Telescope for assistance with these observations.