{"title":"Solar wind turbulence from radio occultation data","authors":"I. Chashei, A. Efimov, M. Bird","doi":"10.1080/10556790701600515","DOIUrl":null,"url":null,"abstract":"Properties of plasma turbulence in the solar wind can be determined from radio frequency fluctuation measurements recorded during solar conjunctions. Noteworthy recent results were obtained from radio occultation experiments performed with the spacecraft Galileo in the interval 1994–2002 and Ulysses in 1991–1997. The power spectral index was calculated for the range of heliocentric distances 5 RS<R<80 RS(RS = solar radius) and the radial evolution of this parameter is discussed. Galileo data (at low solar latitudes) are compared with those recorded with Ulysses (high heliographic latitudes) during the solar activity minimum. Estimates of the turbulence outer scale are obtained using long Galileo frequency fluctuation records. It is found that the turbulence outer scale increases approximately linearly with increasing solar distance in the inner region of the developed solar wind. The observations are interpreted under the assumption that the density fluctuations are generated locally via nonlinear interac...","PeriodicalId":52135,"journal":{"name":"Astronomical and Astrophysical Transactions","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2007-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"6","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Astronomical and Astrophysical Transactions","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1080/10556790701600515","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"Physics and Astronomy","Score":null,"Total":0}
引用次数: 6
Abstract
Properties of plasma turbulence in the solar wind can be determined from radio frequency fluctuation measurements recorded during solar conjunctions. Noteworthy recent results were obtained from radio occultation experiments performed with the spacecraft Galileo in the interval 1994–2002 and Ulysses in 1991–1997. The power spectral index was calculated for the range of heliocentric distances 5 RS
期刊介绍：
Astronomical and Astrophysical Transactions (AApTr) journal is being published jointly by the Euro-Asian Astronomical Society and Cambridge Scientific Publishers, The journal provides a forum for the rapid publication of material from all modern and classical fields of astronomy and astrophysics, as well as material concerned with astronomical instrumentation and related fundamental sciences. It includes both theoretical and experimental original research papers, short communications, review papers and conference reports.
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