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Article: Statistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements

TitleStatistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements
Authors
Issue Date2022
Citation
Astrophysical Journal, 2022, v. 932, n. 1, article no. 56 How to Cite?
AbstractBased on Cassini observations from 2004 to 2016, we perform a comprehensive analysis of the statistical distribution of the occurrence rate, averaged amplitude, wave normal angle (WNA), ellipticity, and power spectral intensity of ion cyclotron waves in Saturn's inner magnetosphere. Our results show that ion cyclotron waves mainly occur between the orbits of Enceladus and Dione near the equatorial region (λ < 20°), with higher occurrence rates in the northern hemisphere than the southern hemisphere. The averaged wave amplitudes vary between 0.1 and 2 nT with a strong day-night asymmetry and a pronounced minimum at the equator. Saturnian ion cyclotron waves are predominantly left-handed polarized with small WNAs near the equator and become linearly polarized with larger WNAs at higher latitudes. The major wave power occurs frequently at frequencies of 0.5-1.2 fw+, where fw+ is the equatorial gyrofrequency of H2O+ ions, with the strongest intensity (>1/410 nT2 Hz-1) at L 6.5 statistically present in the midnight sector.
Persistent Identifierhttp://hdl.handle.net/10722/334846
ISSN
2023 Impact Factor: 4.8
2023 SCImago Journal Rankings: 1.905
ISI Accession Number ID

 

DC FieldValueLanguage
dc.contributor.authorLong, Minyi-
dc.contributor.authorCao, Xing-
dc.contributor.authorGu, Xudong-
dc.contributor.authorNi, Binbin-
dc.contributor.authorQu, Shaojie-
dc.contributor.authorYe, Shengyi-
dc.contributor.authorYao, Zhonghua-
dc.contributor.authorWu, Siyuan-
dc.contributor.authorXu, Yan-
dc.date.accessioned2023-10-20T06:51:09Z-
dc.date.available2023-10-20T06:51:09Z-
dc.date.issued2022-
dc.identifier.citationAstrophysical Journal, 2022, v. 932, n. 1, article no. 56-
dc.identifier.issn0004-637X-
dc.identifier.urihttp://hdl.handle.net/10722/334846-
dc.description.abstractBased on Cassini observations from 2004 to 2016, we perform a comprehensive analysis of the statistical distribution of the occurrence rate, averaged amplitude, wave normal angle (WNA), ellipticity, and power spectral intensity of ion cyclotron waves in Saturn's inner magnetosphere. Our results show that ion cyclotron waves mainly occur between the orbits of Enceladus and Dione near the equatorial region (λ < 20°), with higher occurrence rates in the northern hemisphere than the southern hemisphere. The averaged wave amplitudes vary between 0.1 and 2 nT with a strong day-night asymmetry and a pronounced minimum at the equator. Saturnian ion cyclotron waves are predominantly left-handed polarized with small WNAs near the equator and become linearly polarized with larger WNAs at higher latitudes. The major wave power occurs frequently at frequencies of 0.5-1.2 fw+, where fw+ is the equatorial gyrofrequency of H2O+ ions, with the strongest intensity (>1/410 nT2 Hz-1) at L 6.5 statistically present in the midnight sector.-
dc.languageeng-
dc.relation.ispartofAstrophysical Journal-
dc.titleStatistics of Water-group Band Ion Cyclotron Waves in Saturn's Inner Magnetosphere Based on 13 yr of Cassini Measurements-
dc.typeArticle-
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.3847/1538-4357/ac6bf0-
dc.identifier.scopuseid_2-s2.0-85132982521-
dc.identifier.volume932-
dc.identifier.issue1-
dc.identifier.spagearticle no. 56-
dc.identifier.epagearticle no. 56-
dc.identifier.eissn1538-4357-
dc.identifier.isiWOS:000811485700001-

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