Results 131 to 140 of about 1,793,812 (174)

Energetic electrons in impulsive solar flares: Radio diagnostics

Advances in Space Research, 2005
Abstract Radio emissions during and outside solar flares are tracers of energetic electrons from the bottom of the corona to the interplanetary space. This review focusses on impulsive flares, where joint analyses of radio, hard X-ray and γ-ray observations proved to be powerful probes of the properties of accelerated electrons and of the sites in ...
Klein, Karl-Ludwig
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Optical-to-Radio Continua in Solar Flares

Solar Physics, 2011
Spectral continua observed during solar flares may contain information about both thermal and non-thermal heating mechanisms. Using two semi-empirical flare models F2 and FLA, we synthesize the thermal continua from optical to mm–radio domains and compare their intensities with quiet-Sun values computed from a recent model C7.
P. Heinzel, E. H. Avrett
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Radio Diagnostics of the Solar Flare Reconnection

Space Science Reviews, 2005
First, high-frequency (HF) slowly drifting pulsating structures are interpreted as radio emissions of electron beams accelerated in the magnetic reconnection volume and injected into magnetic islands (plasmoids). Then, the time evolution of plasma parameters (density, magnetic field, etc.) in a 2-D MHD model of solar flare reconnection is computed ...
Marian Karlický, Miroslav Bárta
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Radio Detection of a Rapid Disturbance Launched by a Solar Flare

The Astrophysical Journal, 2000
We report the direct observation of motion associated with a solar flare at a speed of 26,000 km s-1. The motion is seen from a radio source at 0.33 GHz, which suddenly starts moving during the flare. At its peak, the radio source covers a quiet region of dimension 500&arcsec;. Emission from any given location is sporadic.
, White, , Janardhan, , Kundu
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On the origin of solar flare microwave radio bursts

Planetary and Space Science, 1967
Abstract The broadband microwave radio bursts associated with solar flares are suggested to be synchrotron emission from relativistic positrons resulting from the decay of pions produced by the interaction of accelerated flare protons with the solar material. A detailed calculation is made of the positron yield and the resulting synchrotron spectrum,
R.E. Lingenfelter, R. Ramaty
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Type III Radio Bursts and Solar Flares

2023
The 28th IUGG General Assembly (IUGG2023) (Berlin 2023)
Krupar, V., Szabo, A., Maksimovic, M., Kruparova, O., Nemec, F., Martinez Oliveros, J., Lario Loyo, D., Bonnin, X., Vecchio, A.   +8 more
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A radio method of detecting solar flares

Journal of Atmospheric and Terrestrial Physics, 1964
Abstract The paper deals with a radio method developed recently at the Research Department of All India Radio for detecting the occurrence of solar flares. Continuous recording at Delhi of the received field strength of skywave from Radio Tashkent (164 kc/s; distance 1630 km from Delhi) has indicated that a sudden increase in the amplitude of the ...
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Radio observations of the solar neutron flare of 3 June, 1982

Solar Physics, 1986
In this paper the solar neutron and white-light flare is studied on the basis of radioastronomical observations. It is shown that the 3 June, 1982 flare had an impulsive character. A strong shock wave (M A ≥ 2.9) was observed unusually soon after the impulsive phase of the flare.
M. Karlický, H. Aurass, G. Mann
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Suppression of Solar Radio Noise Storms in Eruptive Flares

International Astronomical Union Colloquium, 1994
AbstractWe report four cases in which eruptive flares were accompanied by sharp decreases in pre-existing radio noise storm intensity observed by the IZMIRAN station at 169 and 204 MHz. The type IV/noise storm emission probably originated in similar eruptive flares occurring earlier in the same active region complexes.
S. W. Kahler, E. W. Cliver, I. M. Chertok   +2 more
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Radio Emission Processes Related to Solar Flares

1988
The different types of radio emissions during solar flares are reviewed. Among the short time emissions, blips, spikes, fibers, and pulsations are the most interesting. Spikes may be signatures of elementary flare acceleration events. Their radiation mechanism is still unknown. Among the long term emissions we concentrate on the solar noise storm.
Rudolf A. Treumann, Cesar La Hoz
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