Results 291 to 300 of about 1,884,795 (348)
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Symposium - International Astronomical Union, 1974
(Solar Phys.). Several models for pulsating type IV radio bursts are presented based on the assumption that the pulsations are the result of fluctuations in the synchrotron emission due to small variations in the magnetic field of the source. It is shown that a source that is optically thick at low frequencies due to synchrotron self absorption ...
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(Solar Phys.). Several models for pulsating type IV radio bursts are presented based on the assumption that the pulsations are the result of fluctuations in the synchrotron emission due to small variations in the magnetic field of the source. It is shown that a source that is optically thick at low frequencies due to synchrotron self absorption ...
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AIP Conference Proceedings, 2005
According to their timescale, emission from the Sun can be divided into three types. There is the slowly varying emission which changes on a timescale of 11 years and follows the solar cycle. A more rapidly varying radiation on timescale of weeks, known as quiescent emission, is related to the occurrence of active regions.
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According to their timescale, emission from the Sun can be divided into three types. There is the slowly varying emission which changes on a timescale of 11 years and follows the solar cycle. A more rapidly varying radiation on timescale of weeks, known as quiescent emission, is related to the occurrence of active regions.
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1992
Solar radio observations of the quiet and active Sun are reviewed in the context of the properties of the emission processes. For plasma radiation, the emphasis is on interpretation of the frequency of the emission in terms of height. The roles of free-free bremsstrahlung in the quiet Sun, gyroresonance emission in active regions and thermal and ...
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Solar radio observations of the quiet and active Sun are reviewed in the context of the properties of the emission processes. For plasma radiation, the emphasis is on interpretation of the frequency of the emission in terms of height. The roles of free-free bremsstrahlung in the quiet Sun, gyroresonance emission in active regions and thermal and ...
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1985
The subject of solar radio emission is quite broad and has been reviewed repeatedly in articles and books (Wild et al., 1963; Kundu, 1965; Zheleznyakov, 1970; Wild and Smerd, 1972; Rosenberg, 1976; Smerd, 1976a; Kruger, 1979; Melrose, 1980a). In addition, recent conference proceedings include issue 9 of Radiophysics and Quantum Electronics 20 (1977 ...
Martin V. Goldman, Dean F. Smith
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The subject of solar radio emission is quite broad and has been reviewed repeatedly in articles and books (Wild et al., 1963; Kundu, 1965; Zheleznyakov, 1970; Wild and Smerd, 1972; Rosenberg, 1976; Smerd, 1976a; Kruger, 1979; Melrose, 1980a). In addition, recent conference proceedings include issue 9 of Radiophysics and Quantum Electronics 20 (1977 ...
Martin V. Goldman, Dean F. Smith
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Millisecond solar radio spikes
Uspekhi Fizicheskih Nauk, 1998Currently available models of one of the most intriguing types of unsteady rf solar emission, millisecond solar radio spikes, are discussed. A comparative analysis of the models' implications and of the body of existing data yields an outline of the most realistic radio spike model possible. The spikes are produced by the cyclotron maser mechanism. The
G D Fleishman, V F Mel'nikov
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Harmonics of Solar Radio Spikes at Metric Wavelengths
, 2018This paper presents the latest observations from the newly built solar radio spectrograph at the Chashan Solar Observatory. On July 18, 2016, the spectrograph records a solar spike burst event, which has several episodes showing harmonic structures, with
S. Feng +8 more
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Physics Today, 1949
Recent studies of solar radiation within the radio spectrum indicate that associated with sun spot activity there occur bursts of radiation whose intensity occasionally exceeds the normal radiation by a factor of several million.
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Recent studies of solar radiation within the radio spectrum indicate that associated with sun spot activity there occur bursts of radiation whose intensity occasionally exceeds the normal radiation by a factor of several million.
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Solar radio eclipse observations
Vistas in Astronomy, 1955Abstract The observation of the emission from the Sun at radio wavelengths can provide knowledge of the localized regions of bright radio emission and of the distribution of radio brightness across the quiet Sun. From the latter it is possible to derive the distribution of electron density and temperature in the chromosphere and corona by measurement
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1977
Outside active regions the Sun produces radio emission that is due entirely to bremsstrahlung from thermal electrons — the quiet-Sun radio emission. Radiation of frequency f originates at and above the level where f = f p (= plasma frequency), i.e.
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Outside active regions the Sun produces radio emission that is due entirely to bremsstrahlung from thermal electrons — the quiet-Sun radio emission. Radiation of frequency f originates at and above the level where f = f p (= plasma frequency), i.e.
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2020
This chapter presents a description of the detected radio emission from Solar System objects such as the Sun, the terrestrial planets (in which the Moon may be included, given its general similar radio properties), the giant planets, and the minor planets.
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This chapter presents a description of the detected radio emission from Solar System objects such as the Sun, the terrestrial planets (in which the Moon may be included, given its general similar radio properties), the giant planets, and the minor planets.
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