Mapping the Sun's coronal magnetic field using the Zeeman effect
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arXiv
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| Main Authors: | , , , , , , , , , , , |
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| Format: | Preprint |
| Published: |
2024
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| _version_ | 1866914994602377216 |
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| author | Schad, Thomas A. Petrie, Gordon J. D. Kuhn, Jeffrey R. Fehlmann, Andre Rimmele, Thomas Tritschler, Alexandra Woeger, Friedrich Scholl, Isabelle Williams, Rebecca Harrington, David Paraschiv, Alin R. Szente, Judit |
| author_facet | Schad, Thomas A. Petrie, Gordon J. D. Kuhn, Jeffrey R. Fehlmann, Andre Rimmele, Thomas Tritschler, Alexandra Woeger, Friedrich Scholl, Isabelle Williams, Rebecca Harrington, David Paraschiv, Alin R. Szente, Judit |
| contents | Regular remote sensing of the magnetic field embedded within the million-degree solar corona is severely lacking. This reality impedes fundamental investigations of the nature of coronal heating, the generation of solar and stellar winds, and the impulsive release of energy into the solar system via flares and other eruptive phenomena. Resulting from advancements in large aperture solar coronagraphy, we report unprecedented maps of polarized spectra emitted at 1074 nm by Fe+12 atoms in the active corona. We detect clear signatures of the Zeeman effect that are produced by the coronal magnetic field along the optically thin path length of its formation. Our comparisons with global magnetohydrodynamic models highlight the valuable constraints that these measurements provide for coronal modeling efforts, which are anticipated to yield subsequent benefits for space weather research and forecasting. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_21568 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Mapping the Sun's coronal magnetic field using the Zeeman effect Schad, Thomas A. Petrie, Gordon J. D. Kuhn, Jeffrey R. Fehlmann, Andre Rimmele, Thomas Tritschler, Alexandra Woeger, Friedrich Scholl, Isabelle Williams, Rebecca Harrington, David Paraschiv, Alin R. Szente, Judit Solar and Stellar Astrophysics Regular remote sensing of the magnetic field embedded within the million-degree solar corona is severely lacking. This reality impedes fundamental investigations of the nature of coronal heating, the generation of solar and stellar winds, and the impulsive release of energy into the solar system via flares and other eruptive phenomena. Resulting from advancements in large aperture solar coronagraphy, we report unprecedented maps of polarized spectra emitted at 1074 nm by Fe+12 atoms in the active corona. We detect clear signatures of the Zeeman effect that are produced by the coronal magnetic field along the optically thin path length of its formation. Our comparisons with global magnetohydrodynamic models highlight the valuable constraints that these measurements provide for coronal modeling efforts, which are anticipated to yield subsequent benefits for space weather research and forecasting. |
| title | Mapping the Sun's coronal magnetic field using the Zeeman effect |
| topic | Solar and Stellar Astrophysics |
| url | https://arxiv.org/abs/2410.21568 |