S. Alnussirat, R. Livi, D. E. Larson, A. Rahmati, P. Whittlesey, O. Romeo, S. Badman, Milo Buitrago-Casas, Juan Carlos, Martínez Oliveros, M. Pulupa, S. Bale, J. Huang, J. Verniero, N. R. fi, D. Mitchell, D. J. McComas, Matt Hill, Christina Cohen
{"title":"Dispersive Suprathermal Ion Events Observed by the Parker Solar Probe Mission","authors":"S. Alnussirat, R. Livi, D. E. Larson, A. Rahmati, P. Whittlesey, O. Romeo, S. Badman, Milo Buitrago-Casas, Juan Carlos, Martínez Oliveros, M. Pulupa, S. Bale, J. Huang, J. Verniero, N. R. fi, D. Mitchell, D. J. McComas, Matt Hill, Christina Cohen","doi":"10.3847/2041-8213/acf21c","DOIUrl":null,"url":null,"abstract":"During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event’s nature, origin, and characteristics.","PeriodicalId":179976,"journal":{"name":"The Astrophysical Journal Letters","volume":"60 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Astrophysical Journal Letters","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.3847/2041-8213/acf21c","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
During Encounter 11, Parker Solar Probe observed a low-energy dispersive ions event of solar origin. The event was observed in the SPAN-I and IS⊙IS EPI-Lo sensors. The event started at a few MeV energy in the EPI-Lo sensor and progressed down in energy to ≈1 keV and merged with the bulk of the solar wind. This event is substantially different from typical solar energetic particles because the energetic population shows a distinct peak in the energy spectrum that descends in energy (not a power-law tail). In this Letter, we explore this event’s nature, origin, and characteristics.
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