Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1
Abstract Monitoring the Earth's radiation belt by Low‐Earth‐Orbit (LEO) satellites has a long history and complemented observations near the high‐altitude equatorial plane. However, most of the previous LEO missions suffered from limitations in energy resolution, energy range, L‐shell coverage,...
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| Format: | Article |
| Language: | English |
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Wiley
2021-08-01
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| Series: | Space Weather |
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| Online Access: | https://doi.org/10.1029/2021SW002787 |
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| author | Jaeheung Park Kyoung Wook Min Hoonkyu Seo Eo‐Jin Kim Kwangsun Ryu Jongdae Sohn Jongho Seon Ji‐Hyeon Yoo Seunguk Lee Brian Kress Junchan Lee Changho Woo Dae‐Young Lee |
| author_facet | Jaeheung Park Kyoung Wook Min Hoonkyu Seo Eo‐Jin Kim Kwangsun Ryu Jongdae Sohn Jongho Seon Ji‐Hyeon Yoo Seunguk Lee Brian Kress Junchan Lee Changho Woo Dae‐Young Lee |
| author_sort | Jaeheung Park |
| collection | DOAJ |
| description | Abstract Monitoring the Earth's radiation belt by Low‐Earth‐Orbit (LEO) satellites has a long history and complemented observations near the high‐altitude equatorial plane. However, most of the previous LEO missions suffered from limitations in energy resolution, energy range, L‐shell coverage, or the mission lifetime, which leave room for further improvement in this topic. For <80 keV electrons, the slot‐region outer edge at LEO moves inward with increasing geomagnetic activity, which agrees with previous Van Allen Probes reports. The behavior is more conspicuous for lower‐energy electrons. Latitudinal profiles of outer‐belt electron flux are smoother equatorward of the geosynchronous footprint latitudes (|MLAT| ∼ 66°) than poleward. The NextSat‐1 electron flux is positively correlated to geosynchronous observations, with the coefficient generally higher for higher electron energies. Also, both the geosynchronous and NextSat‐1 data exhibit similar spectral indices close to −3 in the log‐log space. All these results complement and expand previous knowledge on energetic electrons. The main findings are discussed in the context of existing literature. |
| format | Article |
| id | doaj-art-c9fd7b340d334b2abde444237c5f6672 |
| institution | Kabale University |
| issn | 1542-7390 |
| language | English |
| publishDate | 2021-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Space Weather |
| spelling | doaj-art-c9fd7b340d334b2abde444237c5f66722025-01-14T16:30:28ZengWileySpace Weather1542-73902021-08-01198n/an/a10.1029/2021SW002787Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1Jaeheung Park0Kyoung Wook Min1Hoonkyu Seo2Eo‐Jin Kim3Kwangsun Ryu4Jongdae Sohn5Jongho Seon6Ji‐Hyeon Yoo7Seunguk Lee8Brian Kress9Junchan Lee10Changho Woo11Dae‐Young Lee12Space Science Division Korea Astronomy and Space Science Institute Daejeon South KoreaDepartment of Physics Korea Advanced Institute of Science and Technology Daejeon South KoreaSatellite Technology Research Center Korea Advanced Institute of Science and Technology Daejeon South KoreaKorea Institute of S&T Evaluation and Planning Chungcheongbuk‐do South KoreaSatellite Technology Research Center Korea Advanced Institute of Science and Technology Daejeon South KoreaSpace Science Division Korea Astronomy and Space Science Institute Daejeon South KoreaSchool of Space Research Kyung Hee University Yongin South KoreaDepartment of Astronomy and Space Science Chungbuk National University Cheongju South KoreaDepartment of Astronomy and Space Science Chungbuk National University Cheongju South KoreaNational Centers for Environmental Information NOAA/NESDIS/NCEI Boulder CO USASatellite Technology Research Center Korea Advanced Institute of Science and Technology Daejeon South KoreaSatellite Technology Research Center Korea Advanced Institute of Science and Technology Daejeon South KoreaDepartment of Astronomy and Space Science Chungbuk National University Cheongju South KoreaAbstract Monitoring the Earth's radiation belt by Low‐Earth‐Orbit (LEO) satellites has a long history and complemented observations near the high‐altitude equatorial plane. However, most of the previous LEO missions suffered from limitations in energy resolution, energy range, L‐shell coverage, or the mission lifetime, which leave room for further improvement in this topic. For <80 keV electrons, the slot‐region outer edge at LEO moves inward with increasing geomagnetic activity, which agrees with previous Van Allen Probes reports. The behavior is more conspicuous for lower‐energy electrons. Latitudinal profiles of outer‐belt electron flux are smoother equatorward of the geosynchronous footprint latitudes (|MLAT| ∼ 66°) than poleward. The NextSat‐1 electron flux is positively correlated to geosynchronous observations, with the coefficient generally higher for higher electron energies. Also, both the geosynchronous and NextSat‐1 data exhibit similar spectral indices close to −3 in the log‐log space. All these results complement and expand previous knowledge on energetic electrons. The main findings are discussed in the context of existing literature.https://doi.org/10.1029/2021SW002787radiation beltLow‐Earth OrbitNextSat‐1GOES17 |
| spellingShingle | Jaeheung Park Kyoung Wook Min Hoonkyu Seo Eo‐Jin Kim Kwangsun Ryu Jongdae Sohn Jongho Seon Ji‐Hyeon Yoo Seunguk Lee Brian Kress Junchan Lee Changho Woo Dae‐Young Lee Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1 Space Weather radiation belt Low‐Earth Orbit NextSat‐1 GOES17 |
| title | Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1 |
| title_full | Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1 |
| title_fullStr | Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1 |
| title_full_unstemmed | Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1 |
| title_short | Multi‐Year Statistics of LEO Energetic Electrons as Observed by the Korean NextSat‐1 |
| title_sort | multi year statistics of leo energetic electrons as observed by the korean nextsat 1 |
| topic | radiation belt Low‐Earth Orbit NextSat‐1 GOES17 |
| url | https://doi.org/10.1029/2021SW002787 |
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