Evidence for opposed currents in active region loops

Details Evidence for opposed currents in active region loops Evidence for opposed currents in active region loops

Jan 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976soph...46..159l&link_type=abstract

Solar Physics, vol. 46, Jan. 1976, p. 159-170.

Physics

32

Force-Free Magnetic Fields, Lines Of Force, Magnetic Field Configurations, Solar Magnetic Field, Ultraviolet Spectroscopy, X Ray Spectra, Extrapolation, Far Ultraviolet Radiation, Magnetic Signatures, Solar Activity, Solar X-Rays, Ultraviolet Spectrophotometers

Scientific paper

EUV and X-ray images of the sun are used as tracers of the magnetic-field structure in the solar atmosphere in order to study the existence of currents in active regions. Criteria are suggested for comparing the data with theoretical extrapolations of magnetic-field lines above the level of magnetograph observations. Analysis of the data presented in conjunction with force-free field calculations suggests the existence of currents flowing in opposite directions in nearby sets of loops in the active regions considered. Some simple qualitative implications of opposed current structures are suggested.

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