Results 21 to 30 of about 3,067,597 (310)

HF radio channel modeling by a waveguide approach

Solar-Terrestrial Physics, 2023
We present a modified method of HF radio channel modeling based on a waveguide approach. The waveguide approach represents the electromagnetic field of radiation inside the Earth—ionosphere waveguide as an eigenfunction series of a radial boundary ...
Kurkin V. I., Ilyin N. V., Penzin M. S., Ponomarchuk S. N., Khakhinov V. V.   +4 more
doaj   +1 more source

Chromospheric telescope of Baikal Astrophysical Observatory. New light

Solar-Terrestrial Physics, 2016
A chromospheric telescope is an important instrument for synoptic observations and solar research. After several decades of observations with the chromospheric telescope at the Baikal Astrophysical Observatory, a need arose to improve the characteristics
Skomorovsky V.I., Kushtal G.I., Lopteva L.S., Proshin V.A., Trifonov V.D., Chuprakov S.A., Chuprakov S.A.   +6 more
doaj   +1 more source

Scientific goals of optical instruments of the National Heliogeophysical Complex

Solar-Terrestrial Physics, 2020
Studies of the upper atmosphere have to be performed using optical photometric and spectrometric means. Modern devices allow precise photometry of the glow of the night atmosphere — airglow — with high temporal spatial and spectral resolution.
Vasilyev R.V., Artamonov M.F., Beletsky A.B., Zorkaltseva O.S., Komarova E.S., Medvedeva I.V., Mikhalev A.V., Podlesny S.V., Ratovsky K.G., Syrenova T.E., Tashchilin M.A., Tkachev I.D.   +11 more
doaj   +1 more source

Chromospheric K CaII telescope of Baikal Astrophysical Observatory. New light

Solar-Terrestrial Physics, 2019
In recent years, most results of CaII studies of the solar chromosphere in H and K lines have been based on observations with narrow passband filters.
Lopteva L.S., Kushtal G.I., Proshin V.A., Skomorovsky V.I., Firstov S.V., Khimich V.A., Chuprakov S.A.   +6 more
doaj   +1 more source

Solar physics with LISA

Classical and Quantum Gravity, 2005
Galactic cosmic rays and solar energetic particles (SEPs) with energies larger than 100 MeV/n are able to penetrate and charge the test masses of the LISA experiment. As this process constitutes one of the major sources of noise for the experiment, a small telescope of silicon detectors will be located on board the LISA PathFinder and, possibly, the ...
C. Grimani, VOCCA, Helios
openaire   +3 more sources

Registering upper atmosphere parameters in East Siberia with Fabry–Perot Interferometer KEO Scientific “Arinae”

Solar-Terrestrial Physics, 2017
We describe the Fabry—Perot interfero-meter designed to study Earth’s upper atmosphere. We propose a modification of the existing data processing method for determining the Doppler shift and Doppler widening and also for separating the observed line ...
Vasilyev R.V., Artamonov M.F., Beletsky A.B., Zherebtsov G.A., Medvedeva I.V., Mikhalev A.V., Syrenova T.E.   +6 more
doaj   +1 more source

Project of the Large Solar Telescope with mirror 3 m in diameter

Solar-Terrestrial Physics, 2020
One of the most important problems of modern solar physics is the observation of the small-scale structure of the solar atmosphere at various heights (including the chromosphere and corona) in different spectral lines.
Grigoryev V.M., Demidov M.L., Kolobov D.Yu., Pulyaev V.A., Skomorovsky V.I., Chuprakov S.A.   +5 more
doaj   +1 more source

PECULIARITIES OF 630.0 AND 557.7 NM EMISSIONS IN THE MAIN IONOSPHERIC TROUGH: MARCH 17, 2015

Solar-Terrestrial Physics, 2021
Peculiarities of 557.7 and 630.0 nm emissions observed in the second step of the magnetic storm main phase at the mid-latitude observatory Tory (52° N, 103° E) on March 17, 2015 are compared with the changes in ionospheric parameters above this station ...
N.A. Zolotukhina, N.M. Polekh, A.V. Mikhalev, A.B. Beletsky, S.V. Podlesny   +4 more
doaj   +1 more source

Introduction to special issue on high speed solar wind streams and geospace interactions (HSS-GI) [PDF]

, 2009
This special issue of the Journal of Atmospheric and Solar-Terrestrial Physics is devoted to research into high speed solar wind streams (HSSs) and their effects on the region of near-Earth space commonly known as ‘geospace’.
Morley, S.K., Denton, M.H, Horne, Richard B, Borovsky, J.E., Tsurutani, B.T., Denton, M.H., Horne, R.B., McPherron, R.L.   +7 more
core   +1 more source

Spectral and photometric characteristics of mid-latitude auroras during the magnetic storm of March 17, 2015

Solar-Terrestrial Physics, 2018
We study the spatiotemporal dynamics of mid-latitude aurora from observations in the south of Eastern Siberia during St. Patrick’s severe geomagnetic storm on March 17, 2015. We perform a morphological analysis of characteristics of the observed auroras.
Mikhalev A.V., Beletsky A.B., Vasilyev R.V., Zherebtsov G.A., Podlesny S.V., Tashchilin M.A., Artamonov M.F.   +6 more
doaj   +1 more source