Abstract
The series of nine impulsive, highly collimated beams of near-relativistic electrons seen by ACE/EPAM on 26 and 27 June 2004 occurred at a quiet time with respect to solar flare and CME production. However, they were accompanied by decametric type III radio bursts observed by WIND/WAVES, which had progressively higher starting frequencies, suggestive of coronal acceleration. There were no CMEs seen by SOHO/LASCO in association with any of the type III bursts except possibly the first. The energy spectrum of the electrons was soft, typically E−4.5 but extended up to at least ∼200 keV. We suggest that the source region for these events is in the high corona. We discuss this result in the context of solar electron acceleration at other times.
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References
Bougeret, J.-L., et al.: 1995, Space Sci. Rev. 71, 231.
Brueckner, G. E., et al.: 1995, Solar Phys. 162, 357.
Gold, R. E., et al.: 1998, Space Sci. Rev. 86, 541.
Kahler, S. W., Reames, D. V., and Sheeley, N. R., Jr.: 2001, Astrophys. J. 562, 558.
Leblanc, Y., Dulk, G. A., and Bougeret, J.-L.: 1998, Solar Phys. 183, 165.
Lin, R. P.: 1985, Solar Phys. 100, 537.
Petschek, H.: 1964, in W. N. Hess (ed.), Physics of Solar Flares, NASA SP-50, 425.
Potter, D. W., Lin, R. P., and Anderson, K. A.: 1980, Astrophys. J. 235, L97.
Reames, D. V.: 1999, Space Sci. Rev. 90, 413.
Reames, D. V., Von Rosenvinge, T. T., and Lin, R. P.: 1985, Astrophys. J. 292, 176.
Simnett, G. M., Roelof, E. C., and Haggerty, D. K.: 2002, Astrophys. J. 579, 854.
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Simnett, G.M. Electron Acceleration in the Corona. Sol Phys 229, 213–226 (2005). https://doi.org/10.1007/s11207-005-5619-9
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DOI: https://doi.org/10.1007/s11207-005-5619-9