The evolution of compressible solar wind turbulence in the inner heliosphere: PSP, THEMIS and MAVEN observations

dc.contributor.authorAndrés, N.
dc.contributor.authorSahraoui, F.
dc.contributor.authorHadid, L. Z.
dc.contributor.authorHuang, S. Y.
dc.contributor.authorRomanelli, Norberto
dc.contributor.authorGaltier, S.
dc.contributor.authorDiBraccio, G.
dc.contributor.authorHalekas, J.
dc.description.abstractThe first computation of the compressible energy transfer rate from ∼ 0.2 AU up to ∼ 1.7 AU is obtained using PSP, THEMIS and MAVEN observations. The compressible energy cascade rate εC is computed for hundred of events at different heliocentric distances, for time intervals when the spacecraft were in the pristine solar wind. The observational results show moderate increases of εC with respect to the incompressible cascade rate εI. Depending on the level of compressibility in the plasma, which reach up to 25 % in the PSP perihelion, the different terms in the compressible exact relation are shown to have different impact in the total cascade rate εC. Finally, the observational results are connected with the local ion temperature and the solar wind heating problem.en_US
dc.description.sponsorshipN.A. acknowledges financial support from the following grants: PICT 2018 1095 and UBACyT 20020190200035BA. N.A., L.H.Z., and F.S. acknowledge financial support from CNRS/CONICET Laboratoire International Associ´e (LIA) MAGNETO. N.R. is an Assistant Research Scientist at NASA Goddard Space Flight Center, hired by MAVEN Project Scientist Support, and administered by CRESST II and UMBC. We thank the entire PSP, THEMIS and MAVEN team and instrument leads for data access and support.en_US
dc.format.extent15 pagesen_US
dc.genrejournal articles preprintsen_US
dc.identifier.citationN. Andrés, F. Sahraoui et al.,The evolution of compressible solar wind turbulence in the inner heliosphere: PSP, THEMIS and MAVEN observations,
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Center for Space Sciences and Technology
dc.relation.ispartofUMBC Physics Department
dc.relation.ispartofUMBC Faculty Collection
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dc.rightsPublic Domain Mark 1.0*
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.titleThe evolution of compressible solar wind turbulence in the inner heliosphere: PSP, THEMIS and MAVEN observationsen_US


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