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Перегляд Advances in Astronomy and Space Physics за назвою

Репозиторій DSpace/Manakin

Перегляд Advances in Astronomy and Space Physics за назвою

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  • Search for cyclotron absorptions from magnetars in the quiescence with XMM-Newton 
    Malygin, M.G.; Iakubovskyi, D.A. (Advances in Astronomy and Space Physics, 2011)
    In this work, we perform the detailed analysis of absorption features in spectra of magnetar candidates observed by XMM-Newton satellite. No significant line-like feature has been found. This negative result may indicate ...
  • Search for the astrophysical sources of the Fly's Eye event with the highest to date cosmic ray energy E=3.2·10²⁰ eV 
    Gnatyk, R.B.; Kudrya, Yu.N.; Zhdanov, V.I. (Advances in Astronomy and Space Physics, 2016)
    Among the registered extremely high energy cosmic rays (EHECR, E > 10²⁰ eV) an event with the highest to date energy of E = 3.2 · 10²⁰ eV was detected by the Fly's Eye experiment (FE event) in 1991. With the use of the ...
  • Search of the radio emission from flare stars at decameter wavelengths 
    Boiko, A.I.; Konovalenko, A.A.; Koliadin, V.L.; Melnik, V.N. (Advances in Astronomy and Space Physics, 2012)
    Observations of the two M-dwarf flare stars (AD Leonis and EV Lacertae), which were carried out with the radio telescope UTR-2 (Kharkiv, Ukraine) in the range of 16.5 − 33 MHz, are presented. 167 events of radio emission ...
  • Seyfert galaxies and "Unified Scheme" 
    Pahshchenko, I.N.; Pilipenko, S.V.; Vitrishchak, V.M. (Advances in Astronomy and Space Physics, 2011)
    From spectroscopic point of view Seyfert galaxies (as other Active Galactic Nuclei - AGN) basically are subdivided into two types: with and without broad permitted emission lines in their optical spectra (so called type I ...
  • Similarities and differences between heliosphere-geosphere couplings associated with the short and long lived subauroral ionospheric storms: November 2004, F2 region, North East Asia 
    Chelpanov, M.A.; Zolotukhina, N.A. (Advances in Astronomy and Space Physics, 2012)
    We analysed ground and in situ data collected on 9-10 November 2004 during the first day of the long-lived ionospheric storm which consequences were observed in the ionosphere till 13 November and compared the results with ...
  • Simulating peculiar X-shaped extragalactic radio sources 
    Lacatus, D.A.; Paraschiv, A.R.; Tesileanu, O. (Advances in Astronomy and Space Physics, 2012)
    Peculiar morphologies have been observed among extragalactic radio sources, which present important sideways features that are yet to be explained. After obtaining the region in the parameter space for which the intended ...
  • Simulation of polarimetric effects in planetary system HD 189733 
    Frantseva, K.; Kostogryz, N.M.; Yakobchuk, T.M. (Advances in Astronomy and Space Physics, 2012)
    In this paper we present results of linear polarization modelling for HD 189733 in the U filter using the Monte Carlo method. Our simulations are based on the well known effect that linear polarization of a entrosymmetri ...
  • Small-scale solar wind density turbulence spectrum from interplanetary scintillation observations 
    Glubokova, S.K.; Chashei, I.V.; Tyul'bashev, S.A. (Advances in Astronomy and Space Physics, 2012)
    The method of determining the angular sizes of compact radio sources and parameters of the plasma turbulence using temporal scintillation power spectra is described and tested. The observations were carried out with the ...
  • Smooth time variation spectra as a tool to study line profile variability in spectra of hot stars 
    Sudnik, N.P. (Advances in Astronomy and Space Physics, 2012)
    Line profiles in spectra of almost all OB stars are variable. In many cases the line profile variations are extremely weak (not more than 1% of the continuum level). For detection of such micro line profile variations of ...
  • Spectral energy distributions and age estimates of 40 massive young stellar objects 
    Tanti, K.K.; Roy, J.; Duorah, K. (Advances in Astronomy and Space Physics, 2012)
    In this paper, we present the spectral energy distributions (SEDs) of 40 massive young stellar objects (YSOs), detected from the NIR imaging survey carried out by Varricatt et al. 2010 and estimated their ages and masses. ...
  • Spectral investigations of CM Draconis - new results 
    Kuznetsov, M.K.; Pavlenko, Ya.V.; Jones, H.R.A.; Pinfield, D.J. (Advances in Astronomy and Space Physics, 2012)
    CM Draconis is spectroscopic and eclipsing binary system that consists of two nearly identical M dwarfs. The masses and radii for the components are known with high accuracy. The period of the system is P = 1.268 day. In ...
  • Spectroscopic families among diffuse interstellar bands 
    Wszołek, B. (Advances in Astronomy and Space Physics, 2012)
    The inability to identify carriers of the diffuse interstellar bands (DIBs) is one of the longest standing problems in astronomy and astrochemistry. It is debated whether these carriers arise from dust or the gas component ...
  • Spectroscopy of post-AGB star IRAS 01005+7910 
    Nasonov, D.S. (Advances in Astronomy and Space Physics, 2011)
    Infrared source IRAS 01005+7910 is identified with an 11-mag peculiar star which has been previously found to be a post asymptotic giant branch star of early spectral type. There is significant spectral variability detected ...
  • Stellar spectroscopy methods for study of supernova remnants 
    Pakhomov, Yu.V.; Chugai, N.N.; Iyudin, A.F. (Advances in Astronomy and Space Physics, 2011)
    We present the method for study of the characteristics of the supernova remnants using their absorption properties. The background radiation sources are several stars with wide range of distances. Main task is accurate ...
  • Stochastic scattering in Cen A radio lobes 
    Sydorenko, M.V.; Marchenko, V.V.; Sushchov, O.B.; Kobzar, O.O. (Advances in Astronomy and Space Physics, 2013)
    The results of direct numerical modelling of the cosmic ray acceleration in strongly excited turbulence, where quasi-linear theory is non-applicable, are presented. We model turbulent plasma by a set of randomly propagated ...
  • Structure of convective flows of the real Solar granulation 
    Baran, O.A. (Advances in Astronomy and Space Physics, 2011)
    The temperature and velocity field within granular cells has been studied by solving the nonequilibrium inverse radiative transfer problem using neutral iron line λ ≈ 523.4 nm profiles. The results are the following: the ...
  • Structure of convective flows on supergranular scales in the solar photosphere 
    Baran, O.A. (Advances in Astronomy and Space Physics, 2012)
    The exploration of the velocity field of the real solar convection was performed using neutral iron line λ ≈ 639.3 nm profile from the observations with high spatial resolution. The inverse procedure was applied for each ...
  • Surface gravity and effective temperature of the K5 subdwarf G 224-58 A and Arcturus from the fits to Ti and MgH lines 
    Kushniruk, I.O.; Pavlenko, Ya.V.; Gálvez-Ortiz, M.C.; Zhang, Z.H. (Advances in Astronomy and Space Physics, 2016)
    We discuss here the results obtained in the determination of effective temperatures and metallicities of late-type stars. We provide the abundances of MgH, Ti ı and Ti װ, with a list of selected lines, for the red giant ...
  • Telescope inaccuracy model based upon satellite laser ranging data 
    Zhaborovskyy, V.P.; Pap, V.O.; Medvedsky, M.M.; Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2013)
    In this paper, a new approach to constructing a telescope pointing model is described. Procedures of data collection, data processing, and model construction are presented. Telescope encoder countings, obtained during ...
  • Temperature changes over storms from measurements of spacecraft TIMED 
    Pylypenko, S.; Motsyk, O.; Kozak, L. (Advances in Astronomy and Space Physics, 2016)
    In the present work we have studied changes of mesospheric temperature over the powerful storms Wilma, Haitang, and Katrina using measurements of the space vehicle TIMED. We have found the temperature increasing at the ...

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