Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt?
1) Since the outer electron radiation belt is lost on occasion, the radiation belt needs seed electrons to rebuild. 2) The clear candidate for that seed population is energetic substorm-injected electrons in the dipolar magnetosphere. 3) The energetic substorm-injected electrons in the dipole come f...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2022-06-01
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| Series: | Frontiers in Astronomy and Space Sciences |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fspas.2022.930162/full |
| _version_ | 1811232885588361216 |
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| author | Joseph E. Borovsky Andrei Runov |
| author_facet | Joseph E. Borovsky Andrei Runov |
| author_sort | Joseph E. Borovsky |
| collection | DOAJ |
| description | 1) Since the outer electron radiation belt is lost on occasion, the radiation belt needs seed electrons to rebuild. 2) The clear candidate for that seed population is energetic substorm-injected electrons in the dipolar magnetosphere. 3) The energetic substorm-injected electrons in the dipole come from the suprathermal electron population in the magnetotail plasma sheet, delivered by substorms. Scenario (1)–3) begs the question: Where do these magnetotail suprathermal electrons come from? We are hypothesizing that one source (perhaps the dominant source) is the energetic field-aligned electron strahl in the solar wind, which are electrons fresh from the solar corona. |
| first_indexed | 2024-04-12T11:10:47Z |
| format | Article |
| id | doaj.art-01d0d40956ae41c2b408baa5d9bc497f |
| institution | Directory Open Access Journal |
| issn | 2296-987X |
| language | English |
| last_indexed | 2024-04-12T11:10:47Z |
| publishDate | 2022-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Astronomy and Space Sciences |
| spelling | doaj.art-01d0d40956ae41c2b408baa5d9bc497f2022-12-22T03:35:36ZengFrontiers Media S.A.Frontiers in Astronomy and Space Sciences2296-987X2022-06-01910.3389/fspas.2022.930162930162Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt?Joseph E. Borovsky0Andrei Runov1Space Science Institute, Boulder, CO, United StatesDepartment of Earth, Planetary, and Space Sciences, University of California, Los Angeles, Los Angeles, CA, United States1) Since the outer electron radiation belt is lost on occasion, the radiation belt needs seed electrons to rebuild. 2) The clear candidate for that seed population is energetic substorm-injected electrons in the dipolar magnetosphere. 3) The energetic substorm-injected electrons in the dipole come from the suprathermal electron population in the magnetotail plasma sheet, delivered by substorms. Scenario (1)–3) begs the question: Where do these magnetotail suprathermal electrons come from? We are hypothesizing that one source (perhaps the dominant source) is the energetic field-aligned electron strahl in the solar wind, which are electrons fresh from the solar corona.https://www.frontiersin.org/articles/10.3389/fspas.2022.930162/fullradiation beltstrahlplasma sheetpolar rainmagnetosphere |
| spellingShingle | Joseph E. Borovsky Andrei Runov Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt? Frontiers in Astronomy and Space Sciences radiation belt strahl plasma sheet polar rain magnetosphere |
| title | Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt? |
| title_full | Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt? |
| title_fullStr | Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt? |
| title_full_unstemmed | Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt? |
| title_short | Is the Solar Wind Electron Strahl a Seed Population for the Earth’s Electron Radiation Belt? |
| title_sort | is the solar wind electron strahl a seed population for the earth s electron radiation belt |
| topic | radiation belt strahl plasma sheet polar rain magnetosphere |
| url | https://www.frontiersin.org/articles/10.3389/fspas.2022.930162/full |
| work_keys_str_mv | AT josepheborovsky isthesolarwindelectronstrahlaseedpopulationfortheearthselectronradiationbelt AT andreirunov isthesolarwindelectronstrahlaseedpopulationfortheearthselectronradiationbelt |