Solar-Terrestrial Physics Solar-Terrestrial Physics Solar-Terrestrial Physics 2500-0535 12013 10.12737/19876 Results of current research Results of current research Results of current research Interferometric observation of Cygnus-А discrete radiosource scintillations at Irkutsk Incoherent Scatter radar Interferometric observation of Cygnus-А discrete radiosource scintillations at Irkutsk Incoherent Scatter radar https://orcid.org/0000-0001-9174-7350 Глоба Мария Викторовна Globa Mariia Viktorovna globa@iszf.irk.ru

аспирант физико-математических наук;

graduate student of physical and mathematical sciences;

 https://orcid.org/0000-0001-8758-7964 Васильев Роман Валерьевич Vasilyev Roman Valeryevich roman_vasilyev@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 Кушнарев Дмитрий Сергеевич Kushnarev Dmitriy Sergeevich ds_k@iszf.irk.ru

кандидат физико-математических наук;

candidate of physical and mathematical sciences;

 https://orcid.org/0000-0003-0660-8474 Медведев Андрей Всеволодович Medvedev Andrey Vsevolodovich medvedev@iszf.irk.ru

доктор физико-математических наук;

doctor of physical and mathematical sciences;

 Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar-Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar Terrestrial Physics SB RAS Irkutsk Russian Federation Институт солнечно-земной физики СО РАН Иркутск Россия Institute of Solar-Terrestrial Physics SB RAS Irkutsk Russian Federation 31 05 2016 31 05 2016 2 1 34 43 https://naukaru.ru/en/nauka/article/12013/view

We propose a new method for analyzing data from the Irkutsk Incoherent Scatter Radar. The method allows us to accomplish interferometric observation of discrete cosmic radio source characteristics. In this study, we analyze ionospheric scintillations of the radio source Cygnus-A. Observations were made in 2013 during regular radar sessions within 5–15 days for different seasons; the effective time of observation was 15–30 minutes per day. For interferometric analysis, the properties of correlation (coherence) coefficient of two independent recording channels were used. The statistical analysis of data from the independent channels allows us to construct two-dimensional histograms of radio source brightness distribution with a period of 18 s and to determine parameters (the maximum position and the histogram width) representing position and angular size of the radio source for each histogram. It is shown that the change of statistical characteristics does not correlate with fluctuations in power (scintillations) of the signal induced by radio wave propagation through ionospheric irregularities.

We propose a new method for analyzing data from the Irkutsk Incoherent Scatter Radar. The method allows us to accomplish interferometric observation of discrete cosmic radio source characteristics. In this study, we analyze ionospheric scintillations of the radio source Cygnus-A. Observations were made in 2013 during regular radar sessions within 5–15 days for different seasons; the effective time of observation was 15–30 minutes per day. For interferometric analysis, the properties of correlation (coherence) coefficient of two independent recording channels were used. The statistical analysis of data from the independent channels allows us to construct two-dimensional histograms of radio source brightness distribution with a period of 18 s and to determine parameters (the maximum position and the histogram width) representing position and angular size of the radio source for each histogram. It is shown that the change of statistical characteristics does not correlate with fluctuations in power (scintillations) of the signal induced by radio wave propagation through ionospheric irregularities.

 Ionospheric irregularities discrete radio source scintillations Ionospheric irregularities discrete radio source scintillations

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