Results 51 to 60 of about 6,518 (160)
Statistical analysis of microflares as observed by the 4–8 GHz spectropolarimeter
Solar-Terrestrial Physics, 2023 Radio observations of weak events are one of the promising methods for studying energy release and non-thermal processes in the solar corona. The development of instrumental capabilities allows for radio observations of weak transient coronal events ...
Zhdanov D. A. +3 more
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Modernization of the Irkutsk Incoherent Scatter Radar
Solar-Terrestrial Physics, 2017 We present the results of modernization of the Irkutsk Incoherent Scatter Radar’s control and acquisition system. The modernization was carried out using results of space experiments Plasma–Progress and Radar–Progress involving Progress cargo spacecraft.
Kushnarev D.S. +4 more
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Chameleon fields and solar physics [PDF]
Modern Physics Letters A, 2015 In this paper, we discuss some aspects of solar physics from the standpoint of the so-called chameleon fields (i.e. quantum fields, typically scalar, where the mass is an increasing function of the matter density of the environment). Firstly, we analyze the effects of a chameleon-induced deviation from standard gravity just below the surface of the ...
Barbara Ricci +2 more
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Solar-Terrestrial Physics, 2021 The paper reviews the current state of the problem of interaction between long-period ultra-low-frequency (ULF) waves and high-energy particles. We consider elements of the theory of energy exchange between waves and particles, particle transport across ...
D.Yu. Klimushkin +3 more
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Solar neutrinos and neutrino physics [PDF]
The European Physical Journal A, 2016 Solar neutrino studies triggered and largely motivated the major developments in neutrino physics in the last 50 years. Theory of neutrino propagation in different media with matter and fields has been elaborated. It includes oscillations in vacuum and matter, resonance flavor conversion and resonance oscillations, spin and spin-flavor precession, etc.
Maltoni, M., Smirnov, A.
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Observation of eruptive events with the Siberian Radioheliograph
Solar-Terrestrial Physics, 2018 We describe methods for monitoring eruption activity with the first phase of the multiwave Siberian Radioheliograph (SRH-48). We give examples of the recorded eruptive events: 1) rise of a prominence above the limb observed in the radio map sequence of ...
Fedotova A.Yu. +4 more
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First results of absolute measurements of solar flux at the Irkutsk Incoherent Scatter Radar (IISR)
Solar-Terrestrial Physics, 2018 The Irkutsk Incoherent Scatter Radar (IISR) allows us to carry out passive radio observations of the Sun and other powerful radio sources. We describe a method for absolute measurements of spectral flux density of solar radiation at IISR.
Setov A.G. +4 more
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Prospective IS-MST radar. Potential and diagnostic capabilities
Solar-Terrestrial Physics, 2016 In the next few years, a new radar is planned to be built near Irkutsk. It should have capabilities of incoherent scatter (IS) radars and mesosphere-stratosphere-troposphere (MST) radars [Zherebtsov et al., 2011].
Potekhin A.P. +4 more
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Solar-Terrestrial Physics, 2019 We analyze significant increases in 630 nm atomic oxygen night emissions during very strong geomagnetic storms, using optical measurements, theoretical modeling, and magnetogram inversion technique (MIT) data.
Leonovich L.A. +4 more
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Solar-Terrestrial Physics, 2018 Backscatter ionospheric sounding (BIS) is a powerful tool for monitoring and predicting conditions of operation of HF communication systems. The BIS method is adopted to determine coverage areas of radio waves and maximum usable radio frequencies ...
Ponomarchuk S.N. +4 more
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