Results 1 to 10 of about 482,119 (336)

Review and comparison of MHD wave characteristics at the Sun and in Earth’s magnetosphere

Solar-Terrestrial Physics, 2022
Magnetohydrodynamic (MHD) waves play a crucial role in the plasma processes of stellar atmospheres and planetary magnetospheres. Wave phenomena in both media are known to have similarities and unique traits typical of each system.
Chelpanov M. A., Anfinogentov S. A., Kostarev D. V., Mikhailova O. S., Rubtsov A. V., Fedenev V. V., Chelpanov A. A.   +6 more
doaj   +1 more source

Multiwave Siberian Radioheliograph

Solar-Terrestrial Physics, 2020
The article discusses characteristics, fundamental and applied tasks of the Siberian Radioheliograph that is developed at the ISTP SB RAS Radio Astrophysical Observatory and spectropolarimetric complex that measures the total flux of solar radio emission.
Altyntsev A.T., Lesovoi S.V., Globa М.V., Gubin A.V., Kochanov A.A., Grechnev V.V., Ivanov E.F., Kobets V.S., Meshalkina N.S., Muratov A.A., Prosovetsky D.V., Myshyakov I.I., Uralov A.M., Fedotova A.Yu.   +13 more
doaj   +1 more source

Turbulent parameters at different heights in the atmosphere. Shack–Hartmann wavefront sensor data

Solar-Terrestrial Physics, 2022
The paper presents the results of studies of wavefront distortions at different heights in the atmosphere. We have used measurement wavefront data to determine optical turbulence parameters along the line of sight of the Large Solar Vacuum Telescope ...
Shikhovtsev A. Y., Kiselev A. V., Kovadlo P. G., Kolobov D. Y., Russkikh I. V., Tomin V. E   +5 more
doaj   +1 more source

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

ISTP SB RAS decameter radars

Solar-Terrestrial Physics, 2020
Under the project National Heliogeophysical Complex of the Russian Academy of Sciences, it is planned to create several coherent decameter radars. ISTP SB RAS developed a network of coherent decameter radars well before the start of financing this ...
Berngardt O.I, Kurkin V.I., Kushnarev D.S., Grkovich K.V., Fedorov R.R., Orlov A.I., Kharchenko V.V.   +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

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

Siberian Radioheliograph: first results

Solar-Terrestrial Physics, 2017
Regular observations of active processes in the solar atmosphere have been started using the first stage of the multiwave Siberian Radioheliograph (SRH), a T-shaped 48-antenna array with a 4–8 GHz operating frequency range and a 10 MHz instantaneous ...
Lesovoi S.V., Altyntsev А.Т., Kochanov A.A., Grechnev V.V., Gubin А.V., Zhdanov D.A., Ivanov E.F., Uralov A.M., Kashapova L.K., Kuznetsov А.А., Meshalkina N.S., Sych R.A.   +11 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

DYNAMICS OF FIELD-ALIGNED CURRENTS IN TWO HEMISPHERES DURING A MAGNETOSPHERIC STORM FROM MAGNETOGRAM INVERSION TECHNIQUE

Solar-Terrestrial Physics, 2021
We continue to study the physical processes occurring during the August 17, 2001 magnetospheric storm by analyzing the dynamics of the intensity of field-aligned currents (FACs) in Iijima—Potemra Region 1 in the polar ionospheres of the two hemispheres ...
V.V. Mishin, Yu.A. Karavaev, S.B. Lunyushkin, Yu.V. Penskikh, V.E. Kapustin   +4 more
doaj   +1 more source