GRB170519A

This page lists all entries on GRB170519A in GRBweb

Summary IPN Swift GCN 21106 GCN 21107 GCN 21108 GCN 21109 GCN 21111 GCN 21112 GCN 21113 GCN 21114 GCN 21115 GCN 21117 GCN 21118 GCN 21119 GCN 21120 GCN 21121 GCN 21122 GCN 21123 GCN 21124 GCN 21162 GCN 21169 GCN 21206 GCN 21208 GCN 21211

Summary table
Variable Value Source
T0 5:10:02 UTC GCN_circulars,Swift Det
ra 163.4269° Swift
decl 25.3743° Swift
pos_error 5.44e-05° Swift
T90 216.4 s Swift
T90_start 5:10:02 UTC Swift
fluence 1.10e-06 erg/cm² Swift
redshift 0.8180 GCN_circulars,Other
T100 216.4 s
GBM_located False
mjd 57892.21530092593 GCN_circulars,Swift Det
IPN table
GRB_name GRB170519A
ra 163.4500°
decl 25.3833°
pos_error 5.00e-02°
redshift 0.8180
Swift table
GRB_name GRB170519A
t_trigger 5:10:02 UTC
ra 163.4269°
decl 25.3743°
pos_error 5.44e-05°
T90 216.4 s
fluence 1.10e-06 erg/cm²
redshift 0.8180
GCN 21106 table
GRB_name GRB170519A
GCN_number 21106
Detection_method Swift Det
t_trigger 5:10:02 UTC
ra 163.4500°
decl 25.3780°
Circular_text TITLE: GCN CIRCULAR NUMBER: 21106 SUBJECT: GRB 170519A: Swift detection of a burst with an optical counterpart DATE: 17/05/19 05:24:17 GMT FROM: Kim Page at U.of Leicester T. N. Ukwatta (LANL), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC) and K. L. Page (U Leicester) report on behalf of the Swift Team: At 05:10:02 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 170519A (trigger=753445). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 163.450, +25.378 which is RA(J2000) = 10h 53m 48s Dec(J2000) = +25d 22' 41" 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 10 sec. The peak count rate was ~1500 counts/sec (15-350 keV), at ~3 sec after the trigger. The XRT began observing the field at 05:11:23.2 UT, 80.4 seconds after the BAT trigger. Using promptly downlinked data we find a bright, uncatalogued X-ray source located at RA, Dec 163.42823, 25.37377 which is equivalent to: RA(J2000) = 10h 53m 42.78s Dec(J2000) = +25d 22' 25.6" with an uncertainty of 4.8 arcseconds (radius, 90% containment). This location is 72 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. No spectrum from the promptly downlinked event data is yet available to determine the column density. The initial flux in the 2.5 s image was 3.58e-09 erg cm^-2 s^-1 (0.2-10 keV). UVOT took a finding chart exposure of 150 seconds with the White filter starting 91 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 10:53:42.46 = 163.42693 DEC(J2000) = +25:22:27.4 = 25.37429 with a 90%-confidence error radius of about 0.75 arc sec. This position is 1.4 arc sec. from the center of the XRT error circle. The estimated magnitude is 17.07 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.03. Burst Advocate for this burst is T. N. Ukwatta (tilan.ukwatta 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 21107 table
GRB_name GRB170519A
GCN_number 21107
Detection_method Swift-XRT Det
ra 163.4270°
decl 25.3742°
Circular_text TITLE: GCN CIRCULAR NUMBER: 21107 SUBJECT: GRB 170519A: Enhanced Swift-XRT position DATE: 17/05/19 08:49:25 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 2439 s of XRT Photon Counting mode data and 5 UVOT images for GRB 170519A, 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 = 163.42699, +25.37417 which is equivalent to: RA (J2000): 10h 53m 42.48s Dec (J2000): +25d 22' 27.0" with an uncertainty of 1.7 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 21108 table
GRB_name GRB170519A
GCN_number 21108
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21108 SUBJECT: GRB 170519A: optical observations DATE: 17/05/19 10:10:58 GMT FROM: Luca Izzo at IAA-CSIC L. Izzo, A. de Ugarte Postigo, Z. Cano, D.A. Kann (IAA-CSIC) report on behalf of a larger collaboration, We observed the field of GRB 170519A (Ukwatta et al., GCN 21106) with the T24 (Plane Wave CDK 0.61m) of the iTelescope.Net (http://www.itelescope.net) located at Auberry, CA. A single image of 300 s was taken in the V filter, starting at 07:18:04 UT, 2.13 hr after the GRB trigger. The GRB optical afterglow is clearly detected with a preliminary photometry estimate of V ~ 18, as compared to field stars of the GSC2.3 catalog. An image of the field can be seen at http://goo.gl/GScY4H
GCN 21109 table
GRB_name GRB170519A
GCN_number 21109
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 21109 SUBJECT: GRB 170519A: RATIR Optical and NIR Observations DATE: 17/05/19 13:08:22 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), Ori Fox (STScI), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (UVI), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (ASU), and Vicki Toy (UMD) report: We observed the field of GRB 170519A (Ukwatta, et al., GCN 21106) 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 2017/05 19.22 to 2017/05 19.32 UTC (1.8 minutes to 2.44 hours after the BAT trigger), obtaining a total of 1.41 hours exposure in the r and i bands and 0.60 hours exposure in the Z, Y, J, and H bands. The optical transient (GCN 21106; Izzo, et al., GCN 21108) is clearly detected. In comparison with the SDSS DR9 and 2MASS catalogs, we obtain: r 16.72 +/- 0.01 i 16.50 +/- 0.01 Z 16.34 +/- 0.01 Y 16.25 +/- 0.01 J 16.15 +/- 0.01 H 15.87 +/- 0.01 These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. The lightcurve rises in all bands initially, peaking at i~16 at about 15 minutes after the GRB trigger, then fading as t^(-0.8). We thank the staff of the Observatorio Astronómico Nacional in San Pedro Mártir.
GCN 21111 table
GRB_name GRB170519A
GCN_number 21111
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21111 SUBJECT: GRB 170519A: Weihai optical observations DATE: 17/05/19 14:41:03 GMT FROM: Dong Xu at NAOC/CAS D. Xu, Z.P. Zhu, H.X. Feng (NAOC), C.M. Zhang, S.M. Hu (SDU), Y.D. Hu (IAA-CSIC), Y. Qin (Geneva Observatory) report: We observed the field of GRB 170519A (Ukwatta et al., GCN 21106) using the 1-m telescope located at Weihai, Shandong, China. We obtained 4x360s frames in the Sloan r-filter, starting at 11:52:54 UT on 2017-05-19, i.e., 6.71 hr after the burst. The optical afterglow (Ukwatta et al., GCN 21106; Izzo et al., GCN 21108) is clearly detected in our stacked image, and it has decayed to m(r) = 18.92 +/- 0.06 at 6.94 hr post-burst, calibrated with nearby SDSS stars.
GCN 21112 table
GRB_name GRB170519A
GCN_number 21112
Detection_method Swift-BAT Det
ra 163.4290°
decl 25.3740°
Circular_text TITLE: GCN CIRCULAR NUMBER: 21112 SUBJECT: GRB 170519A: Swift-BAT refined analysis DATE: 17/05/19 15:26:19 GMT FROM: Hans Krimm at NSF/NASA-GSFC H. A. Krimm (NSF/USRA), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), 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+630 sec from the recent telemetry downlink, we report further analysis of BAT GRB 170519A (trigger #753445) (Ukwatta, et al., GCN Circ. 21106). The BAT ground-calculated position is RA, Dec = 163.429, 25.374 deg which is RA(J2000) = 10h 53m 42.9s Dec(J2000) = +25d 22' 26.6" with an uncertainty of 1.5 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%. The mask-weighted light curve shows an initial peak starting around T-30 s, peaking at T+0 s, and decaying by T+15 s. Then there is a second, weaker peak from about T+180 s to T+220 s. T90 (15-350 keV) is 216.4 +- 49.4 sec (estimated error including systematics). The time-averaged spectrum from T-28.5 to T+255.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.94 +- 0.26. The fluence in the 15-150 keV band is 1.1 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+0.84 sec in the 15-150 keV band is 0.7 +- 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/753445/BA/
GCN 21113 table
GRB_name GRB170519A
GCN_number 21113
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21113 SUBJECT: GRB 170519A: iTelescope T11 optical observations DATE: 17/05/19 15:42:57 GMT FROM: Veli-Pekka Hentunen at Taurus Hill Obs,A95 Veli-Pekka Hentunen and Markku Nissinen (Taurus Hill Observatory (A95), Varkaus, Finland) report: We have detected GRB 170519A optical afterglow at iTelescope observatory T11 (Mayhill, New Mexico) using 0.51-m/6.8 Planewave CDK telescope and FLI ProLine PL11002M CCD camera. The observations were started at 2017-05-19 05:25:24 (UT). Eleven unfiltered images and seven photometric R filter images with 120 sec exposure time were taken. The optical afterglow was detected at the position RA 10:53:42.46 and DEC +25:22:27.4. The following magnitudes were obtained from the observations using NOMAD1 1153-0183949 (R = 12.650) as a comparison star: Tmid(s)+T0 Filter Exp. time Mag Mag err. 1119 unfiltered 3x120 15.52CR 0.03 1452 unfiltered 2x120 15.63CR 0.03 1906 R 3x120 15.98R 0.10 2324 R 2x120 16.08R 0.11 2806 unfiltered 4x120 16.07CR 0.05 3327 unfiltered 2x120 16.17CR 0.05 3795 R 2x120 16.50R 0.16 --- This email has been checked for viruses by Avast antivirus software. https://www.avast.com/antivirus
GCN 21114 table
GRB_name GRB170519A
GCN_number 21114
Detection_method Swift-XRT Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 21114 SUBJECT: GRB 170519A: Swift-XRT refined Analysis DATE: 17/05/19 16:20:48 GMT FROM: Phil Evans at U of Leicester S. J. LaPorte (PSU), K.L. Page (U. Leicester), B. Mingo (U. Leicester), A.P. Beardmore (U. Leicester), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB), J.A. Kennea (PSU), B. Sbarufatti (INAF-OAB/PSU) and T.N. Ukwatta report on behalf of the Swift-XRT team: We have analysed 9.5 ks of XRT data for GRB 170519A (Ukwatta et al. GCN Circ. 21106), from 73 s to 23.1 ks after the BAT trigger. The data comprise 291 s in Windowed Timing (WT) mode (the first 6 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 Beardmore et al. (GCN Circ. 21107). The late-time light curve (from T0+4.1 ks) can be modelled with a power-law decay with a decay index of alpha=0.94 (+/-0.08). A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 2.62 (+/-0.05). The best-fitting absorption column is 1.78 (+0.12, -0.11) x 10^21 cm^-2, in excess of the Galactic value of 2.4 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.98 (+/-0.10) and a best-fitting absorption column of 1.20 (+0.29, -0.27) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x 10^-11 (4.3 x 10^-11) erg cm^-2 count^-1. A summary of the PC-mode spectrum is thus: Total column: 1.20 (+0.29, -0.27) x 10^21 cm^-2 Galactic foreground: 2.4 x 10^20 cm^-2 Excess significance: 5.8 sigma Photon index: 1.98 (+/-0.10) If the light curve continues to decay with a power-law decay index of 0.94, the count rate at T+24 hours will be 0.030 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.0 x 10^-12 (1.3 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/00753445. This circular is an official product of the Swift-XRT team.
GCN 21115 table
GRB_name GRB170519A
GCN_number 21115
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21115 SUBJECT: GRB 170519A: KAIT Optical Observations DATE: 17/05/19 18:44:38 GMT FROM: Weikang Zheng at UC Berkeley WeiKang Zheng, Max Genecov, and Alex Filippenko (UC Berkeley) report on behalf of the KAIT GRB team: The 0.76-m Katzman Automatic Imaging Telescope (KAIT) at Lick Observatory responded to Swift GRB 170519A (Ukwatta et al., GCN 21106) starting at 05:14:24 UT, 262s after the burst. Observations were performed with an automatic sequence in the V, I, and clear (roughly R) filters, and the exposure time was 20 s per image, observations lasted about 2 hours. The optical afterglow (Ukwatta et al., GCN 21106; Izzo et al., GCN 21108; Butler et al., GCN 21109; Guidorzi et al., GCN 21110; Xu et al., GCN 21111; Hentunen & Nissinen, GCN 21113) was well detected in our V, I and clear filter images. A preliminary analysis shows that the afterglow rises at early time and peaked around 1 ks. After 3 ks after the burst, the light curve can be fitted by a power law with index of -0.83. A preliminary light curve is posted at: http://astro.berkeley.edu/~zwk/grb/GRB170519A/GRB170519A_kait.png
GCN 21117 table
GRB_name GRB170519A
GCN_number 21117
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21117 SUBJECT: GRB 170519A: BOOTES-5/JGT early optical detection DATE: 17/05/19 22:58:31 GMT FROM: Alberto Castro-Tirado at Inst.de Astro. de Andalucia A. J. Castro-Tirado (IAA-CSIC & ISA-UMA), J. C. Tello, R. Cunniffe, B.-B. Zhang, Y. Hu and A. Gonzalez-Rodriguez (IAA-CSIC), A. Castellon (Univ. de Malaga), D. Hiriart, W. H. Lee (UNAM), S. Jeong and I. H. Park (SKKU) and P. Kubanek (Inst. of Physics, CZ) on behalf of a larger collaboration, report: The 60 cm BOOTES-5/Javier Gorosabel Telescope at Observatorio Astronómico Nacional in San Pedro Mártir (México) automatically responded to the Swift trigger of GRB 170519A (Ukwatta et al., GCN 21106). The first unfiltered images (60 s exposures) were obtained at 05:15:08.9 UT (5 min after the burst). At the position of the Swift X-ray afterglow, we confirm the optical afterglow detected by UVOT, at a magnitude of 16.6+/-0.1 when compared to the GSC2.3 catalog, and fading during the late-time BOOTES-5/JGT observation. We thank the staff at Observatorio Astronómico Nacional in San Pedro Mártir for its excellent support. [GCN OPS NOTE(19may17), At the request of the author, the last 3 authors were added.]
GCN 21118 table
GRB_name GRB170519A
GCN_number 21118
Detection_method Swift-UVOT Det
ra 163.4269°
decl 25.3743°
Circular_text TITLE: GCN CIRCULAR NUMBER: 21118 SUBJECT: GRB170519A, Swift-UVOT Detection DATE: 17/05/19 23:24:09 GMT FROM: Sam LaPorte at PSU GRB 170519A: Swift/UVOT Detection S. J. LaPorte (PSU) and T. N. Ukwatta (LANL) report on behalf of the Swift/UVOT team: The Swift/UVOT began settled observations of the field of GRB 170519A 93 s after the BAT trigger (Ukwatta et al., GCN Circ. 21106). A fading source consistent with the XRT position (Beardmore et al. GCN Circ. 21107) is detected in all initial UVOT exposures. The preliminary UVOT position is: RA (J2000) = 10:53:42.45 = 163.42688 (deg.) Dec (J2000) = +25:22:27.5 = 25.37431 (deg.) with an estimated uncertainty of 0.42 arc sec. (radius, 90% confidence). Preliminary detections 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 5315 5515 196 17.22+-0.03 white 582 773 38 16.25+-0.04 white 89 239 147 16.91+-0.03 v 68 5926 421 17.46+-0.08 b 557 6594 282 17.66+-0.05 u 302 552 245 16.00+-0.04 uvw1 680 6337 412 16.76+-0.05 uvm2 5932 6131 196 17.13+-0.11 uvw2 607 627 19 16.45+-0.20 The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst
GCN 21119 table
GRB_name GRB170519A
GCN_number 21119
Detection_method Other
redshift 0.8180
Circular_text TITLE: GCN CIRCULAR NUMBER: 21119 SUBJECT: GRB 170519A: Redshift from GTC/OSIRIS DATE: 17/05/19 23:43:59 GMT FROM: Luca Izzo at IAA-CSIC L. Izzo (IAA-CSIC), A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), D.A. Kann (IAA-CSIC), C.C. Thoene (IAA-CSIC), P. Pessev (GTC, IAC) and A. Tejero (GTC) report on behalf of a larger collaboration: We observed the afterglow of the GRB 170519A (Ukwatta et al., GCN 21106) using OSIRIS on the 10.4m GTC at the Roque de los Muchachos observatory (La Palma, Spain). The observation consisted of 3x1200s exposures using the R1000B grism, covering the range between 3700 and 7800 AA. The first spectrum started at 21:23 UT (16.22 hr after the burst). We detect clear absorption features due to Mg II, Mg I, Fe II, Fe II* and Ca II H&K lines at the common redshift of z = 0.818, which we identify as the redshift of the GRB.
GCN 21120 table
GRB_name GRB170519A
GCN_number 21120
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21120 SUBJECT: GRB 170519A: NOT optical observations DATE: 17/05/19 23:53:45 GMT FROM: Antonio de Ugarte Postigo at IAA-CSIC A. de Ugarte Postigo (IAA-CSIC, DARK/NBI), D. Xu (NAOC), D. Malesani (DARK/NBI), K.E. Heintz (DARK/NBI), D. Gandolfi (Univ. Turin), and J. Telting (NOT) report on behalf of a larger collaboration, We have observed the field of GRB 170519A (Ukwatta et al., GCN 21106) with the 2.5m Nordic Optical Telescope at La Palma (Spain). The observations consisted of 3x120s in V-band and 5x120s in Sloan i-band. The GRB afterglow is well detected in all the individual frames. On an image starting at 21:51 UT (16.68 hr after the burst) we detect the optical afterglow at i(AB) = 19.7 mag, as compared to SDSS field stars. This confirms the t^(-0.8) decay reported by Butler et al. (GCN 21109) and by Zheng et al. (GCN 21115) that started 900 s after the GRB trigger.
GCN 21121 table
GRB_name GRB170519A
GCN_number 21121
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 21121 SUBJECT: GRB 170519A: MITSuME Okayama Optical Observation DATE: 17/05/20 05:01:54 GMT FROM: Daisuke Kuroda at OAO/NAOJ D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Subaru, NAOJ), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of the MITSuME and OISTER collaboration: We observed the field of GRB 170519A (Ukwatta et al., GCNC 21106) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory. The observation started on 2017-05-19 11:03:26 UT (~5.9 h after the burst). We detected the previously reported afterglow (Ukwatta et al., GCNC 21106; Izzo et al., GCNC 21108) in all the three bands. Photometric results of the OT are listed below. We used SDSS-DR8 catalog for flux calibration. #T0+[day] MID-UT T-EXP[sec] g' g'_err Rc Rc_err Ic Ic_err ------------------------------------------------------------------ 0.26646 11:33:44 3120.0 19.1 0.2 18.7 0.2 18.1 0.2 ------------------------------------------------------------------ T0+ : Elapsed time after the burst [day] T-EXP: Total Exposure time [sec]
GCN 21122 table
GRB_name GRB170519A
GCN_number 21122
Detection_method Swift-BAT Det
Circular_text TITLE: GCN CIRCULAR NUMBER: 21122 SUBJECT: GRB 170519A: Continued RATIR Optical and NIR Observations DATE: 17/05/20 14:32:57 GMT FROM: Nat Butler at Az State U 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), Jesús González (UNAM), Carlos Román-Zúñiga (UNAM), Harvey Moseley (GSFC), John Capone (UMD), V. Zach Golkhou (ASU), and Vicki Toy (UMD) report: We observed the field of GRB 170519A (Ukwatta,, et al., GCN 21106) 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 2017/05 20.16 to 2017/05 20.32 UTC (22.66 to 26.62 hours after the BAT trigger), obtaining a total of 2.49 hours exposure in the r and i bands and 0.97 hours exposure in the Z, Y, J, and H bands. In comparison with the SDSS DR9 and 2MASS catalogs, we obtain the following detections of the optical transient: r = 20.57 +/- 0.01 i = 20.39 +/- 0.01 Z = 20.05 +/- 0.04 Y = 20.15 +/- 0.05 J = 20.02 +/- 0.06 H = 19.72 +/- 0.07 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 Martir.
GCN 21123 table
GRB_name GRB170519A
GCN_number 21123
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21123 SUBJECT: GRB 170519A: Watcher optical observations DATE: 17/05/20 18:31:58 GMT FROM: Antonio Martin-Carrillo at UCD,Space Science Group A. Martin-Carrillo (UCD), D. Murphy (UCD), L. Hanlon (UCD), H. J. van Heerden (UFS), B. van Soelen (UFS) and P. J. Meintjes (UFS) We observed the field of GRB 170519A (Ukwatta, et al., GCN 21106 using the 40cm UCD Watcher telescope at Boyden Observatory in South Africa. Observations started on May 19th at 16:30 UT (T0+11.5h) and consisted of a series of 20s exposures in SDSS r’ filter for a total monitoring time of 3 hours. Based on combined images with mid-time at 17:00 UT, we derive a preliminary magnitude of r’=19.3 +/- 0.3 (AB system). Magnitudes were calibrated using 2 nearby APASS stars. No correction for Galactic extinction in the direction of the GRB has been applied.
GCN 21124 table
GRB_name GRB170519A
GCN_number 21124
Detection_method MITSuME
Circular_text TITLE: GCN CIRCULAR NUMBER: 21124 SUBJECT: GRB 170519A: MITSuME Akeno Optical Observation DATE: 17/05/22 06:07:27 GMT FROM: Taketoshi Yoshii at Tokyo Tech K. Morita, Y. Saito, R. Itoh, T. Yoshii, Y. Tachibana, S. Harita, Y. Muraki, T. Ozawa, K. Shiraishi, H. Mamiya, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration: We searched for the optical counterpart of GRB 170519A (T. N. Ukwatta et al., GCN Circular #21106) 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 2017-05-19 11:03:14 UT (21192 sec after the burst). We detected the optical counterpart (T. N. Ukwatta et al., GCN Circular #21106) in g', Rc and Ic band. The measured magnitudes were listed as follows. T0+[hour] MID-UT T-EXP[sec] g' Rc Ic ---------------------------------------------------------------------------- ~5.9 11:34:54 4278 $B!!!!(B19.14+/-0.15 18.48+/-0.11 18.13+/-0.13 ---------------------------------------------------------------------------- T0+ : Elapsed time after the burst T-EXP: Total Exposure time We used GSC2.3 catalog for flux calibration.
GCN 21162 table
GRB_name GRB170519A
GCN_number 21162
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21162 SUBJECT: GRB 170519A: ISON/Multa optical observations DATE: 17/05/29 18:41:18 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Krylov (KIAM), Yu. Krylova (KIAM), S. Schmalz (KIAM), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 170519A (Ukwatta et al., GCN 21106) with 22cm SSS-220 telescope of ISON/Multa observatory(* starting on May 19 (UT) 16:02:54. We took 120 unfiltered frames with 60 s exposure. The optical transient (Ukwatta et al., GCN 21106; Izzo, et al., GCN 21108) is clearly detected in a combined image. Preliminary photometry of the combined image is following Date UT start t-T0 Filter Exp. OT err UL (mid, days) (s) (3sigma) 2017-05-19 16:02:54 0.53936 CR 120*60 18.92 0.28 19.0 The photometry is based on nearby SDSS stars: SDSS-DR9_id R(Lupton) J105316.02+252545.1 16.75 J105332.97+252127.3 16.22 J105336.13+251707.2 15.46 J105322.03+251651.0 15.91 J105339.27+251620.6 16.66 J105338.87+252621.2 16.00 *) The ISON/Multa observatory is located in Altai, N 50d 10′ 07″ E 85d 57′ 25″. The SSS-220 telescope (22 cm, f/2.3) is equipped with CCD camera ML 11002.
GCN 21169 table
GRB_name GRB170519A
GCN_number 21169
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21169 SUBJECT: GRB 170519A: CrAO optical observations DATE: 17/05/30 20:33:55 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), K. Antonyuk (CrAO), I. Nikolenko (CrAO), V. Rumyantsev (CrAO), A. Volnova (IKI), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of the GRB 170519A (Ukwatta et al., GCN 21106) with AZT-11 telescope of CrAO observatory starting on May 19 (UT) 19:07:44, and with Zeiss-1000/Koshka telescope of Simeiz branch of CrAO observatory starting on May 19 (UT) 19:28:57. We took several images in filter R with exposures of 180 s. We clearly detect the afterglow (Ukwatta et al., GCN 21106; Izzo et al., GCN 21108) in combined images. Preliminary photometry of the combined images is following UT start t-T0 Filter Exp. OT err UL Telescope (mid, days) (s) (3sigma) 19:07:44 0.58810 R 6*180 19.17 0.11 20.9 AZT-11 19:26:08 0.59878 R 4*180 19.23 0.12 20.7 AZT-11 19:41:28 0.61473 R 9*180 19.58 0.12 21.1 AZT-11 19:28:57 0.59751 R 1*180 19.05 0.10 20.4 Zeiss-1000 19:31:58 0.60066 R 2*180 19.12 0.10 21.1 Zeiss-1000 19:38:02 0.60592 R 3*180 19.52 0.14 20.3 Zeiss-1000 19:47:08 0.61224 R 3*180 19.52 0.16 20.3 Zeiss-1000 19:56:13 0.62065 R 5*180 19.64 0.14 21.3 Zeiss-1000 The photometry is based on nearby SDSS stars: SDSS-DR9_id R(Lupton) J105339.53+252259.9 17.32 J105332.97+252127.3 16.22 J105348.21+252041.2 17.03 J105341.14+252534.0 16.18 J105353.70+252400.0 15.30
GCN 21206 table
GRB_name GRB170519A
GCN_number 21206
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21206 SUBJECT: GRB 170519A: Mondy optical observations DATE: 17/06/05 19:07:17 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Pozanenko (IKI), E. Klunko (ISTP), A. Volnova (IKI) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 170519A (Ukwatta et al., GCN 21106) with AZT-33IK telescope of Sayan observatory (Mondy) starting on May 20 (UT) 16:27:01. We took several images in R-filter with exposures of 120 s. The optical afterglow (Ukwatta et al., GCN 21106; Izzo, et al., GCN 21108) is clearly visible in single images. We continued our observations on May 27 (UT) 16:28:02, i.e., ~8.5 days after the BAT trigger. We took several R-filtered images. We do not detect the optical counterpart in the enhanced XRT error circle (Beardmore et al., GCN 21107). Preliminary photometry of the afterglow is following: Date UT start t-T0 Filter Exp. OT Err. UL (mid, days) (s) (3 sigma) 2017-05-20 16:27:01 1.47708 R 10*120 19.99 0.03 22.8 2017-05-20 17:07:02 1.50487 R 10*120 19.99 0.03 22.6 2017-05-27 16:28:02 8.49905 R 39*120 n/d n/d 22.6 The photometry is based on nearby SDSS stars reported by Mazaeva et al. (GCN 21169).
GCN 21208 table
GRB_name GRB170519A
GCN_number 21208
Detection_method Optical
Circular_text TITLE: GCN CIRCULAR NUMBER: 21208 SUBJECT: GRB 170519A: TShAO and AbAO optical observations DATE: 17/06/05 19:41:04 GMT FROM: Alexei Pozanenko at IKI, Moscow E. Mazaeva (IKI), A. Pozanenko (IKI), A. Kusakin (Fesenkov Astrophysical Institute), R. Inasaridze (AbAO), I. Reva (Fesenkov Astrophysical Institute), A. Volnova (IKI), V. Ayvazian (AbAO), O. Kvaratskhelia (AbAO), G. Inasaridze (AbAO), I. Molotov (KIAM) report on behalf of larger GRB follow-up collaboration: We observed the field of GRB 170519A (Ukwatta et al., GCN 21106) with Zeiss-1000 1-m telescope of Tien Shan Astronomical Observatory starting on May 20 (UT) 18:42:38. We took several images in R-filter with exposures of 120 s during this night and 2 subsequent nights. The optical afterglow (Ukwatta et al., GCN 21106; Izzo, et al., GCN 21108) is visible in stacked images. We also observed this field with AS-32 (0.7m) telescope of Abastumani Observatory on May 21 (UT) 17:22:33. We took several unfiltered frames with 60 s exposure. In the enhanced XRT error circle (Beardmore et al., GCN 21107) we do not detect the afterglow. Preliminary photometry of the afterglow is following: Date UT start t-T0 Filter Exp. OT Err. UL Telescope (mid, days) (s) (3 sigma) 2017-05-20 18:42:38 1.58414 R 24*120 20.06 0.06 21.4 Zeiss-1000 2017-05-21 15:58:25 2.48340 R 39*120 20.95 0.14 21.6 Zeiss-1000 2017-05-22 15:27:05 3.46168 R 39*120 22.20 0.40 21.9 Zeiss-1000 2017-05-21 17:22:33 2.52050 CR 20*60 n/d n/d 20.8 AS-32 The photometry is based on nearby SDSS stars, reported by Mazaeva et al. (GCN 21169). The light curve of the GRB 170519A afterglow based on our observations (GCNs 21162, 21169, 21206) can be found at http://grb.rssi.ru/GRB170519A/GRB170519A_lc.png
GCN 21211 table
GRB_name GRB170519A
GCN_number 21211
Detection_method Swift Other
Circular_text TITLE: GCN CIRCULAR NUMBER: 21211 SUBJECT: GRB 170519A: 15 GHz upper limits from AMI DATE: 17/06/07 22:36:01 GMT FROM: Kunal Mooley at Oxford U K. P. Mooley (Hintze Fellow, Oxford), 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 170519A (Ukwatta et al., GCN 21106) 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 May 19.61, May 20.84, May 23.74 and May 27.78 (UT) do not reveal any radio source at the XRT location (Beardmore et al., GCN 21107), with 3sigma upper limits of 228 uJy, 190 uJy, 150 uJy, and 100 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/.