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Recovery of a Large-Scale Magnetic Field Using the Stokes I-Profile Approximation Method

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Abstract

This paper presents a procedure for reconstructing the longitudinal magnetic field from observational data of the complete profile of spectral magnetic lines. The method is based on a fast search algorithm for curve fitting for complete profiles of magnetically sensitive lines 6301.5 Å and 6302.5 Å. The magnetic field is calculated as the distance between the centers of the I-profiles of different polarization components. The centers are defined as the midpoints of the Gaussians approximating the I + V, I – V profiles. This approach makes it possible to carry out calculations rather quickly. The presented method makes it possible to reduce the noise in maps of a large-scale magnetic field and improve the accuracy of measurements, primarily of weak fields. The method has been tested to reconstruct the large-scale magnetic field from observations with the STOP full-disk magnetograph telescope (Kislovodsk) in 2014–2022.

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Funding

The work was supported by the project of the Ministry of Education and Science of the Russian Federation N 075-03-2023-121/3.

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Authors and Affiliations

  1. GAO Mountain Astronomical Station, Russian Academy of Sciences, Kislovodsk, Russia

    A. G. Tlatov & I. A. Berezin

  2. Kalmyk State University, Elista, Russia

    A. G. Tlatov & I. A. Berezin

Authors
  1. A. G. Tlatov
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  2. I. A. Berezin
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Correspondence to A. G. Tlatov.

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Tlatov, A.G., Berezin, I.A. Recovery of a Large-Scale Magnetic Field Using the Stokes I-Profile Approximation Method. Geomagn. Aeron. 63, 1180–1184 (2023). https://doi.org/10.1134/S0016793223080248

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  • DOI: https://doi.org/10.1134/S0016793223080248

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