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Solar cycle variation of large-scale coronal structures

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Abstract

A green line intensity variation is associated with the interplanetary and photospheric magnetic sector structure. This effect depends on the solar cycle and occurs with the same amplitude in the latitude range 60° N–60° S. Extended longitudinal coronal structures are suggested, which indicate the existence of closed magnetic field lines over the neutral line, separating adjacent regions of opposite polarities on the photospheric surface.

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Authors and Affiliations

  1. Institute for Plasma Research, Stanford University, 94305, Stanford, Calif., U.S.A.

    Ester Antonucci & Thomas L. Duvall

Authors
  1. Ester Antonucci
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  2. Thomas L. Duvall
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Supported by an ESRO/NASA fellowhip.

On leave from Torino University, Italy; now at Istituto di Fisica, Universita di Torino, Italy.

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Antonucci, E., Duvall, T.L. Solar cycle variation of large-scale coronal structures. Sol Phys 38, 439–447 (1974). https://doi.org/10.1007/BF00155080

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  • DOI: https://doi.org/10.1007/BF00155080

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