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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

Сортувати за: Порядок: Результатів:

  • High-frequency variations of hydrogen spectral lines in the B3V star η UMa 
    Pokhvala, S.M. (Advances in Astronomy and Space Physics, 2015)
    We reported the detection of high-frequency variations in the hydrogen Balmer lines in the hot star η UMa of spectral class B3V. Spectral observations of η UMa were carried out with slitless spectrograph (R ∼ 100) installed ...
  • High-speed multicolour photometry with CMOS cameras 
    Pokhvala, S.M.; Zhilyaev, B.E.; Reshetnyk, V.M. (Advances in Astronomy and Space Physics, 2012)
    We present the results of testing the commercial digital camera Nikon D90 with a CMOS sensor for high-speed photometry with a small telescope Celestron 11ʺ at the Peak Terskol Observatory. CMOS sensor allows to perform ...
  • Identification of the ~3.55 keV emission line candidate objects across the sky 
    Savchenko, D.O.; Iakubovskyi, D.A. (Advances in Astronomy and Space Physics, 2015)
    An emission line at the energy ∼3.55 keV detected in different galaxies and galaxy clusters has caused numerous discussions in high-energy astrophysics and particle physics communities. To reveal the origin of the line, ...
  • Influence of the continuum determination method on the mean transmission in the Lyα forest 
    Torbaniuk, O. (Advances in Astronomy and Space Physics, 2016)
    Determination of the initial flux, or continuum, in the quasar spectra prior to its absorption by the intergalactic Hi is nontrivial problem and it affects the precision of the mean transmission in the Lyα forest, F(z). ...
  • 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 ...
  • In memoriam Siegfried Franck 
    Автор відсутній (Advances in Astronomy and Space Physics, 2012)
  • "Inter-Longitude Astronomy" project: long period variable stars 
    Andronov, I.L.; Marsakova, V.I.; Kudashkina, L.S.; Chinarova, L.L. (Advances in Astronomy and Space Physics, 2014)
    This article contains the highlights of complex studies of long-period variable stars such as Miras: semiregular, symbiotic (particularly, pulsating symbiotic), as well as RV Tauri-type stars. In the course of these studies, ...
  • Interstellar spectral features and telluric absorption lines 
    Kuźmicz, A.; Wszołek, B. (Advances in Astronomy and Space Physics, 2012)
    In good quality spectra of stars the weak interstellar absorption lines may be substantially contaminated by telluric lines. Many telluric lines may also simulate interstellar absorptions. To avoid undesirable telluric ...
  • KyivGeodynamics++: software for processing satellite laser ranging data 
    Choliy, V.Ya.; Zhaborovskyy, V.P. (Advances in Astronomy and Space Physics, 2011)
    We present the software package KyivGeodynamics++ intended for processing satellite laser ranging data. Review of architecture, the main algorithms, results of the first tests are presented.
  • Long-term photopolarimetric variability of DD Ser 
    Belan, S.P.; Shakhovskoy, D.N. (Advances in Astronomy and Space Physics, 2013)
    We present some results of UBVRI-photopolarimetric observations of DD Ser, a poorly studied and understood Ae-star. The long-term component of light variation is detected, with the period of about fifteen years. Variability ...
  • Low-resolution spectroscopy of the chromospherically active stars 61 Cyg AB with small telescopes 
    Pokhvala, S.M.; Zhilyaev, B.E.; Reshetnyk, V.M.; Shavlovskij, V.I. (Advances in Astronomy and Space Physics, 2014)
    We carried out high-speed low-resolution spectroscopy of two stars, 61 Cyg A and B with small telescopes. They are known as chromospherically active stars of the K5V (A) and K7V (B) spectral types. These two stars are ...
  • Low-resolution spectrum of comet C/2004 Q2 (Machholz) 
    Shubina, O.; Korsun, P.; Ivashchenko, Yu. (Advances in Astronomy and Space Physics, 2012)
    We analysed the spectroscopic data for comet C/2004 Q2 (Machholz), obtained on the Zeiss-600 telescope in Andrushivka Astronomical Observatory on January 29, 2005. The observed spectrum covers a wavelength range 3600-9200 ...
  • Lucky image performance simulation on the basis of optical turbulence data obtained on Mt. Shatdzhatmaz 
    Safonov, B.S. (Advances in Astronomy and Space Physics, 2011)
    Lucky imaging is a method allowing to achieve difiraction resolution on a moderate ground-based telescopes with the cost of magnitude limitation. To adequately evaluate capabilities of this technique for a given place (Mt. ...
  • Magnetized Rossby waves in mid-latitude ionosphere F-layer 
    Saliuk, D.A.; Agapitov, O.; Milinevsky, G.P. (Advances in Astronomy and Space Physics, 2012)
    We present the results of study of the ionosphere quasi-periodic perturbations on the basis of the analysis of the critical f0F2 frequency variations. The temporal scales of the perturbations are about 7 days and relative ...
  • Magnetosheath and solar wind turbulence processes features identification 
    Prokhorenkov, A.S.; Kozak, L.V.; Lui, A.T.Y. (Advances in Astronomy and Space Physics, 2015)
    A different kind of analysis should be applied to a turbulent process, than that applied to a nondisturbed medium. In this work we present the result of extended self-similarity analysis (ESS) by comparing between different ...
  • Magnetospheric ULF waves driven by external sources 
    Agapitov, O.V.; Cheremnykh, O.K. (Advances in Astronomy and Space Physics, 2013)
    The multi-spacecraft missions (Cluster and THEMIS) observations allowed to collect large data base for Ultra Low Frequency (ULF) waves properties, their localization, and sources. Here we focused mainly on these recent ...
  • MgH lines in the spectrum of Arcturus 
    Kushniruk, I.O.; Pavlenko, Ya.V.; Kaminskiy, B.M. (Advances in Astronomy and Space Physics, 2013)
    The synthetic spectra of MgH lines were computed for the grid of the model atmospheres and compared with the observed spectrum of Arcturus. The parameters of the atmosphere of Arcturus for log g = 1.5 and Tₑff = 4300K were ...
  • MHD waves in the plasma system with dipole magnetic field configuration 
    Cheremnykh, S.O.; Agapitov, O. (Advances in Astronomy and Space Physics, 2012)
    The eigenmode spectrum of the ultra low frequency (ULF) waves in the Earth magnetosphere is discrete and consists of Alfvén and slow magnetosonic modes. Their interaction depends on ionospheric conductivity and the magnetic ...
  • 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 ...
  • Multipoint observations of Ionospheric Alfvén Resonance 
    Baru, N.A.; Koloskov, A.V.; Yampolsky, Y.M.; Rakhmatulin, R.A. (Advances in Astronomy and Space Physics, 2016)
    Among the processes that form properties of the geospace in the circumterrestrial plasma the electromagnetic resonances of the Earth, such as Schummann Resonance (SR) and Ionospheric Alfvén Resonance (IAR) are of great ...

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