Geometrical relationship of flare-generated solar wind structures to the magnetic axes of bipolar sunspot groups adjacent to their originating solar flares

Details Geometrical relationship of flare-generated solar wind structures to the magnetic axes of bipolar sunspot groups adjacent to their originating solar flares Geometrical relationship of flare-generated solar wind structures to the magnetic axes of bipolar sunspot groups adjacent to their originating solar flares

Aug 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982soph...79..379i&link_type=abstract

Solar Physics, vol. 79, Aug. 1982, p. 379-384.

Physics

12

Interplanetary Space, Shock Waves, Solar Flares, Solar Wind, Sunspots, Solar Activity Effects, Solar Magnetic Field

Scientific paper

Occurrences of interplanetary shock waves near the earth after the powerful isolated flares of 1957-1978 are investigated. The close connection between the occurrences of shock waves and the positions of magnetic axes of bipolar groups of sunspots is suggested on the basis of a statictical study. The shockwaves are principally observed when the earth finds itself ear the planes that are projected through the flares in parallel to the appropriate magnetic axes of the nearest bipolar groups. This regularity is interpreted as an indirect argument for a three-dimensional geometry for the interplanetary shock waves which, when projected on these flattened to corresponding planes, are traces of large circular arcs. The typical angular scales of isolated interplanetary shock waves are estimated as approximately 150 and 30 deg parallel and perpendicular, respectively, to the magnetic axes correspondingly.

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