Počet záznamů: 1
Statistical study of electron density turbulence and ion-cyclotron waves in the inner heliosphere: Solar Orbiter observations
- 1.
SYSNO ASEP 0550196 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Statistical study of electron density turbulence and ion-cyclotron waves in the inner heliosphere: Solar Orbiter observations Tvůrce(i) Carbone, F. (IT)
Sorriso-Valvo, L. (SE)
Khotyaintsev, Y. V. (SE)
Steinvall, K. (SE)
Vecchio, A. (FR)
Telloni, D. (IT)
Yordanova, E. (SE)
Graham, D. B. (SE)
Edberg, N.J.T. (SE)
Eriksson, A.I. (SE)
Johansson, E.P.G. (SE)
Vásconez, L. (EC)
Maksimovic, M. (NL)
Bruno, R. (IT)
D'Amicis, R. (IT)
Bale, S. D. (US)
Chust, T. (FR)
Krasnoselskikh, V. (FR)
Kretzschmar, M. (FR)
Lorfèvre, E. (FR)
Plettemeier, D. (DE)
Souček, Jan (UFA-U) RID, ORCID
Steller, M. (AT)
Štverák, Štěpán (UFA-U) RID, ORCID
Trávníček, Pavel (UFA-U) RID, ORCID
Vaivads, A. (SE)
Horbury, T.S. (GB)
O'Brien, H. (GB)
Angelini, V. (GB)
Evans, V. (GB)Celkový počet autorů 30 Číslo článku A16 Zdroj.dok. Astronomy & Astrophysics. - : EDP Sciences - ISSN 0004-6361
Roč. 656, Dec 14 (2021)Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. FR - Francie Klíč. slova solar wind ; turbulence ; waves ; plasmas Vědní obor RIV BL - Fyzika plazmatu a výboje v plynech Obor OECD Fluids and plasma physics (including surface physics) Způsob publikování Open access Institucionální podpora UFA-U - RVO:68378289 UT WOS 000730246400010 EID SCOPUS 85121618202 DOI 10.1051/0004-6361/202140931 Anotace Context. The recently released spacecraft potential measured by the RPW instrument on board Solar Orbiter has been used to estimate the solar wind electron density in the inner heliosphere.
Aims. The measurement of the solar wind’s electron density, taken in June 2020, has been analysed to obtain a thorough characterization of the turbulence and intermittency properties of the fluctuations. Magnetic field data have been used to describe the presence of ion-scale waves.
Methods. To study and quantify the properties of turbulence, we extracted selected intervals. We used empirical mode decomposition to obtain the generalized marginal Hilbert spectrum, equivalent to the structure functions analysis, which additionally reduced issues typical of non-stationary, short time series. The presence of waves was quantitatively determined by introducing a parameter describing the time-dependent, frequency-filtered wave power.
Results. A well-defined inertial range with power-law scalng was found almost everywhere in the sample studied. However, the Kolmogorov scaling and the typical intermittency effects are only present in fraction of the samples. Other intervals have shallower spectra and more irregular intermittency, which are not described by models of turbulence. These are observed predominantly during intervals of enhanced ion frequency wave activity. Comparisons with compressible magnetic field intermittency (from the MAG instrument) and with an estimate of the solar wind velocity (using electric and magnetic field) are also provided to give general context and help determine the cause of these anomalous fluctuations.Pracoviště Ústav fyziky atmosféry Kontakt Kateřina Adamovičová, adamovicova@ufa.cas.cz, Tel.: 272 016 012 ; Kateřina Potužníková, kaca@ufa.cas.cz, Tel.: 272 016 019 Rok sběru 2022 Elektronická adresa https://arxiv.org/pdf/2105.07790.pdf
Počet záznamů: 1