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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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  • Fast-growing sunspot groups AR1618, AR1619, AR1620, AR1640 and their features 
    Fursiak, Yu.A. (Advances in Astronomy and Space Physics, 2013)
    The paper considers evolutionary features of fast-growing sunspot groups AR1618, AR1619, AR1620, and AR1640. The study consists of the analysis of magnetic fields, movements of the solar atmosphere at different levels, and ...
  • Fast radio bursts as electromagnetic radiation from cusps on superconducting cosmic strings 
    Zadorozhna, L.V. (Advances in Astronomy and Space Physics, 2015)
    Cosmic strings are topological defects, relicts of the early Universe, which can be formed during phase transitions of fields with spontaneous broken symmetry. There also exists a special class of cosmic strings - ...
  • Formal estimation of the random component in global maps of total electron content 
    Choliy, V.Ya. (Advances in Astronomy and Space Physics, 2016)
    Random component of the total electron content (TEC) maps, produced by global navigation satellite system processing centres, was analysed. Helmert transform (HT) and two-dimension singular spectrum analysis (2dSSA) were ...
  • Frequency drift rates of powerful decameter Type III bursts 
    Boiko, A.I.; Mel'nik, V.N.; Konovalenko, A.A.; Rucker, H.O.; Abranin, E.P.; Dorovskyy, V.V.; Lecacheux, A. (Advances in Astronomy and Space Physics, 2011)
    We report on the observations of powerful (fluxes are larger than 10⁻¹⁹ W m⁻² Hz⁻¹) solar Type III bursts at frequencies 10 − 30 MHz. Recordings of 163 bursts, observed in July 2002 and of 231 bursts observed in August ...
  • Geometry of highly inclined protoplanetary disks 
    Zakhozhay, O.V.; del Burgo, C.; Zakhozhay, V.A. (Advances in Astronomy and Space Physics, 2015)
    We present a geometric model for the modelling of spectral energy distribution of inclined protoplanetary disks. We investigate peculiarities in the geometry of nearly edge-on disks with an inner hole and a central object. ...
  • Gravitational lens equation: critical solutions and magnification near folds and cusps 
    Alexandrov, A.N.; Koval, S.M.; Zhdanov, V.I. (Advances in Astronomy and Space Physics, 2012)
    We study approximate solutions of the gravitational lens equation and corresponding lens magnification factor near the critical point. This consideration is based on the Taylor expansion of the lens potential in powers of ...
  • 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 ...

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