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Перегляд Advances in Astronomy and Space Physics за датою випуску

Репозиторій DSpace/Manakin

Перегляд Advances in Astronomy and Space Physics за датою випуску

Сортувати за: Порядок: Результатів:

  • Observation of maximum injection upper limit for energetic proton events according to SOHO/ERNE measurements 
    Allawi, H.; Al-Ramdhan, W.; Al-Sawad, A. (Advances in Astronomy and Space Physics, 2011)
    We analyzed 25 solar energetic particle events, with energies ∼ 1 − 100 MeV, observed with ERNE instrument onboard Solar and Heliospheric Observatory (SOHO) and found that all of the solar energetic particlse were associated ...
  • Numerical modeling of the magnetosphere with data based internal magnetic field and arbitrary magnetopause 
    Dobreva, P.S.; Kartalev, M.D. (Advances in Astronomy and Space Physics, 2011)
    We present a new model of the magnetospheric magnetic field. Using the finite element method, ChapmanFerraro problem is solved numerically in the considered approach. The whole magnetic field is a sum of: the dipole field, ...
  • The secondary radiation of the Earth's ionosphere 
    Szczesniak, M.; Szczesniak, R.; Durajsk, A.P.; Jarosik, M.W. (Advances in Astronomy and Space Physics, 2011)
    The modernization of the KLAUDIA radiotelescope, used for the detection of the Earth ionosphere's secondary radiation at 40 kHz±200 Hz waves, is presented in the paper. In particular, the scope of the Very Low Frequency ...
  • Nonlinear anticyclone structures in the Earth's atmosphere 
    Saliuk, D.; Agapitov, O. (Advances in Astronomy and Space Physics, 2011)
    We present some results of the study of nonlinear vortex structures in the Earth's atmosphere known as blocking-anticyclones. It is shown that synoptic-scale structure can be considered in the geostrophic approximation in ...
  • Peculiar morphologies of extended extragalactic radio sources from numerical simulations 
    Lacatus, D.A.; Badea, M.; Paraschiv, A.R.; Tesileanu, O. (Advances in Astronomy and Space Physics, 2011)
    Among the extragalactic radio sources there are objects with unusual morphologies. We investigated the possibility that the propagation of jets in a stratified distribution of density may produce such effects. A numerical ...
  • Do BL Lacs lack the circular polarization? 
    Podorvanyuk, N.Yu.; Vitrishchak, V.M.; Pashchenko, I.N.; Gabuzda, D.C. (Advances in Astronomy and Space Physics, 2011)
    We present the first preliminary evidence of difference in the circular polarized emission between quasars and BL Lacs. BL Lac objects seem to lack the sources with high circular polarization degrees. It cannot be due to ...
  • Circular polarization of AGNs on the parsec VLBI scales 
    Vitrishchak, V.M.; Pashchenko, I.N.; Gabuzda, D.C. (Advances in Astronomy and Space Physics, 2011)
    Faraday effects possibly plays the major role in generation of circular polarization observed on Very Long Base Interferometry scales. Multi-frequency circular polarization measurementrs can become the desired breakthrough ...
  • 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 ...
  • Atomic hydrogen deficiency in spiral galaxies in clusters 
    Shaldenkova, E.S. (Advances in Astronomy and Space Physics, 2011)
    We consider the new method for atomic hydrogen deficiency estimations. The main idea is to use the empirical relation between total HI mass and specific angular momentum of the disk for isolated galaxies. The method was ...
  • 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 ...
  • Propagation of different components of cosmic rays from Centaurus A in the Galactic magnetic fields 
    Kobzar, O.; Hnatyk, B.; Marchenko, V.; Bogdan, T. (Advances in Astronomy and Space Physics, 2011)
    Propagation of different chemical composition ultrahigh energy cosmic rays in the galactic magnetic fields was simulated. The simulation for the ultra high energy events, registered by the AUGER observatory in the sky ...
  • The influence of extragalactic magnetic fields on the propagation of cosmic rays from Centaurus A 
    Sushchov, O.; Kobzar, O.; Hnatyk, B.; Marchenko, V.; Bogdan, T. (Advances in Astronomy and Space Physics, 2011)
    The motion of different chemical composition of ultra high energy cosmic rays in the galactic magnetic fields with taking into account the extragalactic magnetic field was considered. The ultra high energy events registered ...
  • 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 ...
  • 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 ...
  • Estimations of angles between some axes in radio pulsars from catalog at 1000 MHz 
    Nikitina, E.B.; Malov, I.F. (Advances in Astronomy and Space Physics, 2011)
    There are some known theoretical models used for investigations of pulsars at present. One of the most important parameters for the check of existing pulsar models is the angle β between an axis of an emission cone (a ...
  • The firrst spectra for the RX J0440.9+4431 from 2m Terskol telescope 
    Simon, A.; Bondar, A.V.; Reshetnyk, V.M. (Advances in Astronomy and Space Physics, 2011)
    We present the rst results on the spectra of Be/X-ray binary RX J0440.9+4431 obtained with the 2m Ritchey-Chretein-Coude telescope with Cassegrain Multi Mode Spectrograph (CMMS) (with R = 14000) at Terskol observatory. ...
  • 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 ...
  • On the massive disks in low surface brightness galaxies 
    Saburova, A.S. (Advances in Astronomy and Space Physics, 2011)
    On the example of four low surface brightness galaxies we demonstrate that the mass-to-light ratio of their disks may be found from the condition of marginal gravitational stability. In this case their surface densities ...
  • Infuence of low-frequency quasar 3C 273 radio spectrum on X-ray emission of its kiloparsec jet 
    Mykhailova, M.S.; Kontorovich, V.M. (Advances in Astronomy and Space Physics, 2011)
    In this paper the X-ray emission spectrum from the nearest to the quasar 3C 273 inner jet knot A was investigated by the kinetic equation method. It is shown that the inverse Compton scattering of the quasar radio emission ...
  • Modeling radial velocities of HD 240210 with the Genetic Algorithm 
    Rozenkiewicz, A.; Gozdziewski, K.; Migaszewski, C. (Advances in Astronomy and Space Physics, 2011)
    More than 450 extrasolar planets are known to date. To detect these intriguing objects many photometric and radial velocity surveys are in progress. We developed the Keplerian FITting code, to model published and available ...

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