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Limits on the magnetic field strength at the base of the solar convection zone

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Abstract

Howard (1993) finds a relationship between the tilt angles of BMRs (Bipolar Magnetic Regions) and the separation between their leading and following polarities; the tilt angle increases with polarity separation. Here we present a more detailed analysis of this relationship and show that this effect constrains the strength of the magnetic field at the bottom of the convection zone to a value between 40 and 150 kG, which confirms the constraints put by D'Silva and Choudhuri (1993) based on Joy's law (the tilt-latitude relationship), through an entirely different approach.

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Authors and Affiliations

  1. Theoretical Astrophysics, Tata Institute of Fundamental Research, 400 000, Bombay, India

    Sydney D'Silva

  2. National Solar Observatory, National Optical Astronomy Observatories, 85726, Tucson, AZ, USA

    Robert F. Howard

Authors
  1. Sydney D'Silva
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  2. Robert F. Howard
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Operated by the Association of Universities for Research in Astronomy, Inc., under Cooperative

Operated by the Association of Universities for Research in Astronomy, Inc., under Cooperative

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D'Silva, S., Howard, R.F. Limits on the magnetic field strength at the base of the solar convection zone. Sol Phys 148, 1–9 (1993). https://doi.org/10.1007/BF00675531

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  • DOI: https://doi.org/10.1007/BF00675531

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