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Type: Artigo de periódico
Title: Pulsations at the onset of the great solar burst of 22 October 1989
Author: Makhmutov, VS
Costa, JER
Raulin, JP
Kaufmann, P
Lagrotta, PR
De Castro, CGG
Magun, A
Arzner, K
Abstract: The onset phase of the 22 October 1989 great solar burst was observed at 48 GHz using the multiple beam technique, which allows unambiguous flux determination irrespective of spatial angular position changes in time. We found strong quasi-periodic pulsating structures as the flux started to rise. Two significantly different time scales of similar to 2.5-4.5 s and similar to 0.2-0.5 s have been observed. These pulsations might be related to magnetohydrodynamic perturbations in the active region. However the fast component also might be a signature of the acceleration and/or injection of energetic electrons.
Country: Holanda
Editor: Kluwer Academic Publ
Citation: Solar Physics. Kluwer Academic Publ, v. 178, n. 2, n. 393, n. 403, 1998.
Rights: fechado
Identifier DOI: 10.1023/A:1005019622052
Date Issue: 1998
Appears in Collections:Unicamp - Artigos e Outros Documentos

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