Issues

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1998

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December

  

Reviews of topical problems


Millisecond solar radio spikes

 a, b,  c
a Ioffe Institute, ul. Polytekhnicheskaya 26, St. Petersburg, 194021, Russian Federation
b New Jersey Institute of Technology, Newark, New Jersey, USA
c Scientific Research Institute of Radio Physics, ul. B. Pecherskaya 25, Nizhnii Novgorod, 603600, Russian Federation

Currently 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 cyclotron cone instability is caused by fast electrons distributed over energies according to a (piecewise) power law. The angular part of the distribution function (whose exact form is, as yet, undetermined) suffers fluctuations due to the magnetic field inhomogeneities that arise in the burst loop as a consequence of the original energy release. In some portions of the loop the distribution is not anisotropic enough to secure the development of a cyclotron instability; it is in these ’microtraps’ where individual spikes form. Key areas of future theoretical and experimental research are suggested with a view to verifying the adequacy and realizing the diagnostic potential of the model.

Fulltext is available at IOP
PACS: 96.60.−j
DOI: 10.1070/PU1998v041n12ABEH000510
URL: https://ufn.ru/en/articles/1998/12/a/
Citation: Fleishman G D, Mel’nikov V F "Millisecond solar radio spikes" Phys. Usp. 41 1157–1189 (1998)
BibTexBibNote ® (generic) BibNote ® (RIS)MedlineRefWorks
TY JOUR
TI Millisecond solar radio spikes
AU Fleishman, G. D.
AU Mel’nikov, V. F.
PB Physics-Uspekhi
PY 1998
JO Physics-Uspekhi
JF Physics-Uspekhi
JA Phys. Usp.
VL 41
IS 12
SP 1157-1189
UR https://ufn.ru/en/articles/1998/12/a/
ER https://doi.org/10.1070/PU1998v041n12ABEH000510

:   ,    « » 168 1265–1301 (1998); DOI: 10.3367/UFNr.0168.199812a.1265

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