Please use this identifier to cite or link to this item: http://hdl.handle.net/2248/607
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dc.contributor.authorMarkeev, A. K-
dc.contributor.authorFormichev, V. V-
dc.contributor.authorChertok, I. M-
dc.contributor.authorBhatnagar, A-
dc.contributor.authorJian, R. M-
dc.contributor.authorShelke, R. N-
dc.contributor.authorBhonsle, R. V-
dc.date.accessioned2005-12-06T05:11:40Z-
dc.date.available2005-12-06T05:11:40Z-
dc.date.issued1983-12-
dc.identifier.citationBASI, Vol. 11, No. 4, pp. 318-326en
dc.identifier.urihttp://hdl.handle.net/2248/607-
dc.description.abstractThe observations of the 1980 March 28, 2B flare in optical, radio microwave and metric and x-ray wavelengths are presented. In the dynamic radio spectrum, unusual and rare U-shaped type II radio bursts associated with this flare have been observed. The normal type II bursts display negative frequency drift, due to the flare-triggered shock wave travelling outwards in the solar corona. But in this case the type II emission first showed the usual negative frequency drift, and then after reaching a plateau level, showed a positive drift, thus giving the shape of an inverted 'U'. We propose a model for this type II emission. We suggest that the shock wave generated by the flare or the flare spray propagates through ducting and repeated reflections, which takes place within a large scale coronal loop or an arcade of loops, thus resulting in reversed frequency drift in type II emission.en
dc.format.extent1143160 bytes-
dc.format.mimetypeapplication/pdf-
dc.language.isoen-
dc.publisherAstronomical Society of Indiaen
dc.subjectSolar flareen
dc.subjectSprayen
dc.subjectSurgeen
dc.subjectU-shaped type II bursten
dc.subjectDynamic radio spectrumen
dc.titleU-shaped type II solar radio bursts associated with 1980 March 28 flareen
dc.typeArticleen
Appears in Collections:BASI Publications

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