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Solar cycle variations inP-modes and chromospheric magnetism

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Abstract

The effect onp-mode frequencies of a horizontal chromospheric canopy field is studied theoretically and the results compared with Libbrecht and Woodard's observations of frequency changes. Combined changes in field strength and chromospheric temperature cause frequency shifts that are similar in form to those observed. Frequency shifts inp-modes offer the possibility of signatures of solar activity cycles distinct from sunspot numbers and butterfly diagrams.

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Authors and Affiliations

  1. Department of Mathematical and Computational Sciences, University of St. Andrews, KY16 9SS, St. Andrews, Fife, Scotland

    Rekha Jain & B. Roberts

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  1. Rekha Jain
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  2. B. Roberts
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Jain, R., Roberts, B. Solar cycle variations inP-modes and chromospheric magnetism. Sol Phys 152, 261–266 (1994). https://doi.org/10.1007/BF01473213

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  • DOI: https://doi.org/10.1007/BF01473213

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