Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona
Observational data at heliocentric distances of tens of solar radii suggest that fast magnetosonic modes make up a considerable fraction of the solar wind fluctuations. Furthermore, this fraction appears to increase closer to the Sun. We carry out three-dimensional kinetic simulations with particle...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2024-01-01
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| Series: | The Astrophysical Journal |
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| Online Access: | https://doi.org/10.3847/1538-4357/ad3727 |
| _version_ | 1797198312968814592 |
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| author | S. A. Markovskii Bernard J. Vasquez |
| author_facet | S. A. Markovskii Bernard J. Vasquez |
| author_sort | S. A. Markovskii |
| collection | DOAJ |
| description | Observational data at heliocentric distances of tens of solar radii suggest that fast magnetosonic modes make up a considerable fraction of the solar wind fluctuations. Furthermore, this fraction appears to increase closer to the Sun. We carry out three-dimensional kinetic simulations with particle ions and fluid electrons to evaluate the proton and alpha-particle heating produced by the damping of the fast waves in the solar corona. Realistic parameters at 5 solar radii, including the fluctuation amplitude, are used. We show that, due to the cyclotron resonance, the alphas are heated preferentially perpendicularly to the magnetic field and much more strongly than the protons. The presence of the alpha particles alters the energy partition by reducing the heating of the protons. Nevertheless, the proton heating is sufficient to account for the solar wind acceleration. |
| first_indexed | 2024-04-24T06:57:52Z |
| format | Article |
| id | doaj.art-9633cf73034a4a3fb41f2e7cefd75c51 |
| institution | Directory Open Access Journal |
| issn | 1538-4357 |
| language | English |
| last_indexed | 2024-04-24T06:57:52Z |
| publishDate | 2024-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj.art-9633cf73034a4a3fb41f2e7cefd75c512024-04-22T10:24:41ZengIOP PublishingThe Astrophysical Journal1538-43572024-01-019661110.3847/1538-4357/ad3727Ion Heating by a Fast Magnetosonic Turbulence in the Solar CoronaS. A. Markovskii0Bernard J. Vasquez1https://orcid.org/0000-0001-8593-7289Space Science Center, University of New Hampshire , Durham, NH 03824, USA ; sergei.markovskii@unh.edu, bernie.vasquez@unh.eduSpace Science Center, University of New Hampshire , Durham, NH 03824, USA ; sergei.markovskii@unh.edu, bernie.vasquez@unh.eduObservational data at heliocentric distances of tens of solar radii suggest that fast magnetosonic modes make up a considerable fraction of the solar wind fluctuations. Furthermore, this fraction appears to increase closer to the Sun. We carry out three-dimensional kinetic simulations with particle ions and fluid electrons to evaluate the proton and alpha-particle heating produced by the damping of the fast waves in the solar corona. Realistic parameters at 5 solar radii, including the fluctuation amplitude, are used. We show that, due to the cyclotron resonance, the alphas are heated preferentially perpendicularly to the magnetic field and much more strongly than the protons. The presence of the alpha particles alters the energy partition by reducing the heating of the protons. Nevertheless, the proton heating is sufficient to account for the solar wind acceleration.https://doi.org/10.3847/1538-4357/ad3727Space plasmasSolar coronal heatingSolar wind |
| spellingShingle | S. A. Markovskii Bernard J. Vasquez Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona The Astrophysical Journal Space plasmas Solar coronal heating Solar wind |
| title | Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona |
| title_full | Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona |
| title_fullStr | Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona |
| title_full_unstemmed | Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona |
| title_short | Ion Heating by a Fast Magnetosonic Turbulence in the Solar Corona |
| title_sort | ion heating by a fast magnetosonic turbulence in the solar corona |
| topic | Space plasmas Solar coronal heating Solar wind |
| url | https://doi.org/10.3847/1538-4357/ad3727 |
| work_keys_str_mv | AT samarkovskii ionheatingbyafastmagnetosonicturbulenceinthesolarcorona AT bernardjvasquez ionheatingbyafastmagnetosonicturbulenceinthesolarcorona |