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Evidence that Interaction with the Spacecraft Plasma Wake Generates Plasma Waves Close to the Electron Cyclotron Frequency in the Near-Sun Solar Wind
Univ Colorado, Astrophys & Planetary Sci Dept, Boulder, CO USA.;Univ Colorado, Lab Atmospher & Space Phys, Boulder, CO USA..ORCID iD: 0000-0003-1191-1558
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0002-5968-9637
KTH, School of Electrical Engineering and Computer Science (EECS), Electrical Engineering, Space and Plasma Physics.ORCID iD: 0000-0003-1654-841X
2022 (English)In: Astrophysical Journal Letters, ISSN 2041-8205, E-ISSN 2041-8213, Vol. 936, no 2, article id L20Article in journal (Refereed) Published
Abstract [en]

Prior observations of the near-Sun solar wind (sunward of 0.25 au) identified frequent, intense plasma waves near the local electron cyclotron frequency (f (ce)), and its harmonics. In this Letter, it is shown that near-f (ce) wave properties are consistent with generation via interaction between the observing spacecraft's ion wake and the ambient plasma and magnetic fields. This result implies that many observed near-f (ce) waves are not intrinsic to the unobstructed solar wind flow, and therefore are unlikely to play a significant role in the dynamic evolution of particle distributions in the solar wind.

Place, publisher, year, edition, pages
American Astronomical Society , 2022. Vol. 936, no 2, article id L20
National Category
Astronomy, Astrophysics and Cosmology
Identifiers
URN: urn:nbn:se:kth:diva-319099DOI: 10.3847/2041-8213/ac8c8fISI: 000852041500001Scopus ID: 2-s2.0-85143744347OAI: oai:DiVA.org:kth-319099DiVA, id: diva2:1698741
Note

QC 20220926

Available from: 2022-09-26 Created: 2022-09-26 Last updated: 2023-06-08Bibliographically approved

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Tigik, Sabrina F.Vaivads, Andris

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