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Перегляд Advances in Astronomy and Space Physics за назвою

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Перегляд Advances in Astronomy and Space Physics за назвою

Сортувати за: Порядок: Результатів:

  • 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 ...
  • Tests of commercial colour CMOS cameras for astronomical applications 
    Pokhvala, S.M.; Reshetnyk, V.M.; Zhilyaev, B.E. (Advances in Astronomy and Space Physics, 2013)
    We present some results of testing commercial colour CMOS cameras for astronomical applications. Colour CMOS sensors allow to perform photometry in three filters simultaneously that gives a great advantage compared with ...
  • The discrete dipole approximation code DDscat.C++: features, limitations and plans 
    Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2013)
    We present a new freely available open-source C++ software for numerical solution of the electromagnetic waves absorption and scattering problems within the Discrete Dipole Approximation paradigm. The code is based upon ...
  • The distribution of dark matter and intracluster gas in galaxy clusters 
    Babyk, Iu.; Melnyk, O.; Elyiv, A. (Advances in Astronomy and Space Physics, 2012)
    We present the temperature radial profiles of intracluster gas, and the radial profiles of density and mass for dark matter and intracluster gas for five galaxy clusters: Abell 1413, Abell 1204, Abell 2744, Abell 223 and ...
  • The dynamics of the observed solar granulation: spatio-temporal variations of line of sight velocity and thermodynamic parameters 
    Baran, O.A. (Advances in Astronomy and Space Physics, 2014)
    We investigated the dynamics of solar granulation, using the neutral iron line λ ≈ 639.3 nm profiles from highspatial resolution observations around the centre of the solar disc, in the non-perturbed region. We reproduced ...
  • The energy sources of CME acceleration 
    Allawi, H.; Pohjolainen, S. (Advances in Astronomy and Space Physics, 2012)
    We investigate the possibility that during the fast acceleration phase of a coronal mass ejection (CME), a freely propagating shock wave could be launched. We test this hypothesis by calculating the speeds of blast waves ...
  • 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. ...
  • The Galactic sky through H.E.S.S. eyes 
    Sushch, I. (Advances in Astronomy and Space Physics, 2015)
    The High Energy Stereosopic System (H.E.S.S.) is an array of five imaging atmospheric Cherenkov telescopes. Since 2003 it has been operating in the configuration of four 12 m telescopes complemented in 2012 by a much bigger ...

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