{
  "bibcode": "2019GCN.25573....1L",
  "body": "V. Lipunov, E. Gorbovskoy, F.Balakin,  V.Kornilov, \nN.Tyurina, P.Balanutsa, A.Kuznetsov, V.Vladimirov, D. Vlasenko,\nI.Gorbunov, D.Zimnukhov, V.Senik, T.Pogrosheva,  D.Kuvshinov, \nA.Chasovnikov, V.Topolev, A.Posdnyakov\n(Lomonosov Moscow State University, SAI, Physics Department),\n\nV. Yurkov, A. Gabovich, Yu. Sergienko\n(Blagoveschensk Educational State University)\n\nA. Tlatov, D. Dormidontov\n(Kislovodsk Solar Station of the Pulkovo Observatory),\n\n\nR. Podesta, C.Lopez, F. Podesta, C.Francile\n(Observatorio Astronomico Felix Aguilar OAFA),\n\nH.Levato\n(Instituto de Ciencias Astronomicas, de la Tierra y del Espacio ICATE),\n\nR. Rebolo, M. Serra\n(The Instituto de Astrofisica de Canarias),\n\nD. Buckley\n(South African Astronomical Observatory),\n\nO.A. Gres, N.M. Budnev, O.Ershova\n(Irkutsk State University, API),\n\n\n\nMASTER-Amur robotic telescope (Global MASTER-Net: \nhttp://observ.pereplet.ru, Lipunov et al., 2010, Advances in Astronomy, \nvol. 2010, 30L) located in Russia (Blagoveshchensk State Pedagogical \nUniversity) was pointed to the  GRB190829A (Fermi GCN 25551 )  55 sec \nafter Swift trigger  time (Dichiara et al., GCN 25552) at  2019-08-29 19:57:39   UT. The \n5-sigma image limit has been about 14.5 mag\n\n\nMASTER-Kislovodsk robotic telescope was pointed to the  GRB190829A  by \nFERMI GBM coordinates  15 s after trigger time at 2019-08-29 19:56:59 in \ntwo polarizations.\nThe Swift BAT position was 2 degree below horison at this time on \nMASTER-Kislovodsk in two polarizations.  The first image at Swift BAT \nposition was obtained 909 s after trigger at 2019-08-29 20:11:53, but due to extrimelly high zenith \ndistance (89.5 degree) this images has no stars. The first images with \nstars  was obtained  1239 s after trigger at 2019-08-29 20:17:23 (zenith \ndistance 88.7).\n\nThe both FERMI-GBM and Swift BAT position was below horisont at \nMASTER-SAAO,  MASTER-Tavrida and MASTER-OAFA sites. Thus, automatic \npointing was not possible.\n\nMASTER-SAAO robotic telescope  located in South Africa (South African \nAstronomical Observatory) was pointed to the GRB190829A errorbox  6757 sec \nafter trigger time at 2019-08-29 21:49:21 UT, with upper limit up to  21.3 \nmag. The observations began at zenit distance = 76 deg. The sun  altitude \nis -64.5 deg.\n\nMASTER-Tavrida robotic telescope  located in Russia (Lomonosov MSU, SAI \nCrimea astronomical station) was pointed to the  GRB190829.83 errorbox \n6766 sec after trigger time at 2019-08-29 21:49:30 UT, with upper limit up \nto  18.5 mag. The observations began at zenit distance = 79 deg. The sun \naltitude  is -36.7 deg.\n\nMASTER-OAFA robotic telescope  located in Argentina (OAFA observatory of \nSan Juan National University) joined  to the  GRB190829A observations \n27862 sec after trigger time at 2019-08-30 03:41:06 UT, with upper limit \nup to  19.8 mag. The observations began at zenit distance = 77 deg. The \nsun  altitude  is -64.8 deg.\nObservation with the MASTER-OAFA telescope continues.\n\n\nSwift team  noted   the presence of a galaxy SDSS J025810.28-085719.2 \n(PGC997094) with z=0.07914 centered at a distance of 10 arcseconds from \nthe XRT location.\n\nThe aftergrlow was detected indipendingly by ( Xu et al. GCNC 25555,\nLipunov et al. GCNC 25558).\nWe see object with 3.1E\t7.5S arcsec ofsset from the galaxy center.\n\n\nOptical afterglow spectrum displays a red \ncontinuum  (Valeev et al., 25565) consistent with the\nNOT results (Heintz et al. GCNC 25563) at redshift z = 0.0785 +/- 0.005 \nwhich coincided with PGC Galaxy.\n\nVery late brightening (up to 1 hour after trigger)  in our data, says \nabout the unusual nature of this phenomenon. By the way, after \nthe maximum of the brightness of the brightness decreases linearly with \ntime!\n\nObviously, this fact indicates the affinity of the galaxy and the \ngamma-evant.\n\nIf a very probable connection between the gamma-ray burst and the nearby \ngalaxy PGC997094 at a distance of ~ 320 Megaparsec  and the lack of\nan LVC alert can make an  important conclusion (VML):\nas expected, the collapse of the progenitor core proceeds through the slow \n(on the scale of the radial fall time) compression of the quasicylindrical \nobject - the spinar (Lipunov & Gorbovskoy, 2007, ApJ, vol. 665, \n97; Lipunov & Gorbovskoy, MNRAS, 2008, vol. 383, 1397;\nLipunova et al., MNARS, 2009, vol. 397; 1695 .\n\nThe one of the automatic detection images is available at\nmaster.sai.msu.ru/static/OT/GRB190829.jpg\n\nYou can see the tools of the MASTER robot in Kislovodsk. From left to \nright: the image corresponds to the specified time, the next frame of the \nDSS,  the next is difference between the new and the reference frame, \nframe from  SDSS.\n\nBelow are two frames of today's observation. Then a logarithm frame. \nFinaly, old reference frame.\n\nRuduction is continue.\nThis message can be cited.",
  "circularId": 25573,
  "createdOn": 1567164578000,
  "email": "lipunov@xray.sai.msu.ru",
  "subject": "GRB 190829A:: Global MASTER-net optical clear and polarization observations scheduler  and some spiculations",
  "submitter": "Vladimir Lipunov at Moscow State U/Krylov Obs  <lipunov@xray.sai.msu.ru>",
  "eventId": "GRB 190829A"
}