منابع مشابه
Solar type III radio burst time characteristics at LOFAR frequencies and the implications for electron beam transport
Context. Solar type III radio bursts contain a wealth of information about the dynamics of electron beams in the solar corona and the inner heliosphere; this information is currently unobtainable through other means. However, the motion of different regions of an electron beam (front, middle, and back) have never been systematically analysed before. Aims. We characterise the type III burst freq...
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Microturbulence, i.e. enhanced fluctuations of plasma density, electric and magnetic fields, is of great interest in astrophysical plasmas, but occurs on spatial scales far too small to resolve by remote sensing, e.g., at ∼1-100 cm in the solar corona. This paper reports spatially resolved observations that offer strong support for the presence in solar flares of a suspected radio emission mech...
متن کاملMultimodal deep learning for solar radio burst classification
In this paper, multimodal deep learning for solar radio burst classification is proposed. We make the first attempt to build multimodal learning network to learn the joint representation of the solar radio spectrums captured from different frequency channels, which are treated as different modalities. In order to learn the representation of each modality and the correlation and interaction betw...
متن کاملHigh frequency ion sound waves associated with Langmuir waves in type III radio burst source regions
Short wavelength ion sound waves (2–4 kHz) are detected in association with the Langmuir waves (∼15– 30 kHz) in the source regions of several local type III radio bursts. They are most probably not due to any resonant wavewave interactions such as the electrostatic decay instability because their wavelengths are much shorter than those of Langmuir waves. The Langmuir waves occur as coherent fie...
متن کاملEvidence for Langmuir envelope solirons in solar type III burst source regions
We present observational evidence for the generation of Langmuir envelope solirons in the source regions of solar type III radio bursts. The solirons appear to be formed by electron beams which excite either the modulational instability or oscillating two-stream instability (OTSI). Millisecond data from the Ulysses Unified Radio and Plasma Wave Experiment (URAP) show that Langmuir waves associa...
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ژورنال
عنوان ژورنال: International Astronomical Union Colloquium
سال: 1996
ISSN: 0252-9211
DOI: 10.1017/s025292110003027x