NEWS


JÁN RYBÁK

Astronomical Institute, Slovak Academy of Sciences
SK-059 60 Tatranská Lomnica, Slovakia
email: choc astro sk, WWW: http://www.astro.sk/~choc


  • [NEW] September 20, 2017: Based on an AISAS internal call I have applied for position of the head of the Solar Physics Department of AISAS: the department conception document, the complete application document (both in Slovak).

  • [NEW] September 11, 2017: Attending the ESPM15 meeting help in Budapest (Hungary, September 4-8, 2017) I have presented, on behalf of a large group of co-authors, the poster entitled 'Cold plasma rotation in the tornado-like prominence of July 13, 2014: a real motion or an illusive effect?' (PDF file) being also co-author of 5 other posters presented by my colleagues I. Dorotovic, J. Koza, H. Meszaroszova, and P. Schwartz.

  • [NEW] July 31, 2017: An article 'Spectroscopic inversions of the Ca II 8542 A line in a C-class solar flare' of authors D. Kuridze, V. Henriques, M. Mathioudakis, J. Koza, T. V. Zaqarashvili, A. Hanslmeier, F. P. Keenan, and myself has been accepted for publication in The Astrophysical Journal and on Aug 3, 2017 posted at ArXiv. The article is available at the ApJ page.

  • [NEW] July 24, 2017: An article 'Spectral Characteristics of the He I D3 Line in a Quiescent Prominence Observed by THEMIS' of authors J. Koza, P. Gomory, M. Kozak (AISAS, Tatranska Lomnica), A. Lopez Ariste (UPS-OMP, Institut de Recherche en Astrophysique et Planétologie, Université de Toulouse, and Institut de Recherche en Astrophysique et Planétologie, CNRS, Toulouse, France) and myself has been posted on-line in the Solar Physics journal (Solar Physics 292, article id.#98 (2017)

  • May 24, 2017: An article 'Oscillations in the 45-5000 MHz Radio Spectrum of the 18 April 2014 Flare' of authors M. Karlicky (AI CAS, Ondrejov, Czech republic), C. Monstein (Institute for Astronomy, ETH, Zurich, Switzerland) and myself has been accepted for publication in the Solar Physics journal (Solar Physics 292, article id.#94 (2017), article at ArXiv).

  • March 23, 2017 : The CoMP-S@LSO data reduction pipeline has been extended for a new sky scattered light background subtraction algorithm. The algorithm takes care for actual scattering conditions during individual frame acqusitions. Examples of the Gaussian fitting parameters derived from the data with the sky scattered light background subtracted before the fitting action can be seen below:


    The Gaussian fitting parameters of the H I 656 nm line

  • November 18, 2016: The preliminary version of the CoMP@MLSO Fe XIII 1074/1079 line ratio "pseudomaps" has been derived for the co-temporal and co-spatial EIS/Hinode rasters acquired on 2016/08/21. The data were recorded during the coordinated observational programme IHOP 316 'Searching for Non-Maxwellian Distributions with COMP, EIS, and IRIS', led by Jaro Dudik (AI CAS, Ondrejov, Czech republic). This programme wass scheduled as a ToO project in August and September 2016. Examples of the CoMP@MLSO Fe XIII 1074/1079 line ratio "pseudomaps" simultaneous with the EIS/Hinode raster (2016/08/21, 20:13:09-21:34:24) can be seen below:


    The line ratio "pseudomap" without any
    CoMP@MLSO pointing corrections applied.


    The line ratio "pseudomap" with a simple
    CoMP@MLSO pointing corrections applied.

  • November 05, 2016: An article 'Oscillation maps in the broadband radio spectrum of the 1 August 2010 event' of authors M. Karlicky (AI CAS, Ondrejov, Czech republic) and myself has been accepted fo publication in the Solar Physics journal. The article is available at arXiv.

  • October 11, 2016: An actual list of observations (HTML, PDF, XLS - up to MS Excel 2003 or LibreOffice 4.2.8.2), performed by the CoMP-S instrument, at the Lomnicky Peak Observatory, for the OBS_PROG 002 has been discussed with the program proposers A. Veronig and M. Temmer (IGAM/Institufe for physics, KF Uvibersity, Graz, Austria) and the next few steps of the TODO list have been set.

  • September 28, 2016: 'Broadband microwave sub-second pulsations in an expanding coronal loop of the 2011 August 10 flare' - a paper of H. Meszarosova, J. Rybak, L. Kashapova, P. Gomory and S. Tokhchukova, has appeared in the Astronomy & Astrophysics journal, volume 593, A80 (2016): A&A article page, PDF full paper file, ArXiv article page.

  • August 23, 2016: The CoMP-S@LSO data of the observing campaign 'Spectropolarimetry of the quiet prominences and their cavities' of P. Schwartz has been reduced and data were provided for an analysis of the He I 656 nm and Ca II 854 nm lines. In total data of 4 observing days are prepared with several promimences observed each day. Examples of the Gaussian fitting parameters can be seen below:


    The Gaussian fitting parameters of the H I 656 nm line


    The uncertainties of determination of the Gaussian fitting parameters of the H I 656 nm line

  • August 21, 2016: Actually performed coordinated observational programme IHOP 316 'Searching for Non-Maxwellian Distributions with COMP, EIS, and IRIS', led by Jaro Dudik (AI CAS, Ondrejov, Czech republic), has got coordinated observations of the EIS/Hinode, IRIS and CoMP@MLSO instruments for the first time. This programme is scheduled as a ToO project till end of September 2016. Programme LOG file summarizes observationall efforts of the instruments and data acquired.

  • May 11-19, 2016: 'Waves in fine-scale structures of the solar chromosphere' - a joint observing campaign for detailed study of waves in chromospheric fine-scale structures combining high resolution imaging spectroscopy in the H I 656 and nm Ca II 854 nm spectral lines obtained by the instrument CRISP at the Swedish 1-m Solar Telescope (SST) with the UV/EUV data obtained simultaneously by the cosmic solar observatories IRIS and SDO (PI: Julius Koza). I have been involved in the performace of the CRISP@SST observations and I am also working on the post-facto data reduction and coaligment. Web page of the campaign can be found at the dedicated web page with lot of LOG files in text and pictures.


    Last update: JR, 20/09/2017