Zobrazeno 1 - 10
of 19
pro vyhledávání: '"S. K. Panishko"'
Autor:
O. A. Lytvynenko, S. K. Panishko
Publikováno v:
Odessa Astronomical Publications, Vol 33, Iss 0, Pp 72-74 (2020)
Effect of scintillations arises in the result of interaction of radio signal from the cosmic radio source with irregularities of ionosphere plasma which appears at the registration of observations as amplitude fluctuations. Wherein fluctuations of th
Externí odkaz:
https://doaj.org/article/78ab8e3156da4624b151311f48d6d912
Autor:
S. K. Panishko, O. A. Lytvynenko
Publikováno v:
Radio Physics and Radio Astronomy, Vol 24, Iss 1, Pp 44-54 (2019)
Purpose: With relation to radio astronomy, ionospheric scintillation of discrete cosmic radio sources is an undesirable effect. At the same time, ionospheric scintillations carry information on the ionospheric turbulence and are a separate object of
Externí odkaz:
https://doaj.org/article/39ecc4d4491a49a9bfb9a3d0f91974a2
Autor:
O. A. Lytvynenko, S. K. Panishko
Publikováno v:
Radio Physics and Radio Astronomy, Vol 22, Iss 4, Pp 304-309 (2017)
Purpose: Variations of ionospheric scintillation index of the power cosmic radio sources (3С144, 3С274, 3С405, and 3С461) observed for the year-to-day time intervals with the radio telescope at the decameter wavelengths are analyzed. Design/me
Externí odkaz:
https://doaj.org/article/4a798f47c63a4d88a69f1e6253a0036c
Publikováno v:
Radio Physics and Radio Astronomy, Vol 22, Iss 4, Pp 294-303 (2017)
Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the state of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources. Design/Methodology/a
Externí odkaz:
https://doaj.org/article/23ade96b9a524a918659c0187caf83eb
Publikováno v:
Odessa Astronomical Publications, Vol 17, Iss 0, Pp 42-44 (2017)
The measurements of cosmic radiosources have scintillations on ionospheric irregularities at decametric waves. The analysis of temporal variations of the scintillation indexes was carried out on the base of observation data obtained on RT URAN-4 duri
Externí odkaz:
https://doaj.org/article/2e8aca1569604f0a8a74fee4ea41d849
Autor:
O. A. Lytvynenko, S. K. Panishko
Publikováno v:
Odessa Astronomical Publications, Vol 28, Iss 2, Pp 235-237 (2016)
Observations of the four power cosmic radio sources were carried out on the radio telescope (RT) URAN-4 during 1987-1990 and 1998-2007 at the frequencies 20 and 25 MHz. Effects of ionosphere and in particular existence of intensity fluctuations on th
Externí odkaz:
https://doaj.org/article/45688a32cb784bd9965858893123826e
Publikováno v:
Odessa Astronomical Publications, Vol 28, Iss 2, Pp 224-226 (2016)
This work is dedicated to the study of secular decrease of the flux of young supernova remnant Cas A according to observations by radio- telescope "URAN-4» of Odessa Observatory IRA NASU from 1987 to 2001 years on frequency of 25 MHz. On the investi
Externí odkaz:
https://doaj.org/article/ad86d73ecc59415dad224575ab27f8ed
Autor:
O. A. Litvinenko, S. K. Panishko
Publikováno v:
Odessa Astronomical Publications, Vol 14, Iss 0, Pp 200-201 (2017)
Histograms and mean value of scintillations indexes are obtained for power cosmic radio sources on observations during 1998-2001. Using simulations it is showed that scintillations with periods more then 10 minutes give the error of measuring of ampl
Externí odkaz:
https://doaj.org/article/86e806bf6ebf4f98aa4547ba71771888
Autor:
S. K. Panishko, O. A. Lytvynenko
Publikováno v:
Radio Physics and Radio Astronomy, Vol 22, Iss 4, Pp 304-309 (2017)
Purpose: Variations of ionospheric scintillation index of the power cosmic radio sources (3С144, 3С274, 3С405, and 3С461) observed for the year-to-day time intervals with the radio telescope at the decameter wavelengths are analyzed. Design/metho
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0fafc71913466a67cf10ef3d17f58853
https://doi.org/10.15407/rpra22.04.304
https://doi.org/10.15407/rpra22.04.304
Publikováno v:
Radio Physics and Radio Astronomy, Vol 22, Iss 4, Pp 294-303 (2017)
Purpose: Investigation of the effects of the influence of solar and geomagnetic activity on the state of the Earth’s upper atmosphere by the method of “transmission through” it with the radiation of cosmic radio sources. Design/Methodology/appr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e0734afe19077d5bca889c1352e19687
http://rpra-journal.org.ua/index.php/ra/article/view/1278
http://rpra-journal.org.ua/index.php/ra/article/view/1278