Evolution of solar wind turbulence from 0.1 to 1 au during the first parker solar probe-solar orbiter radial alignment
File(s)Telloni_ApJL_2021_Accepted.pdf (783.26 KB)
Accepted version
Author(s)
Type
Journal Article
Abstract
The first radial alignment between Parker Solar Probe and Solar Orbiter spacecraft is used to investigate the evolution of solar wind turbulence in the inner heliosphere. Assuming ballistic propagation, two 1.5 hr intervals are tentatively identified as providing measurements of the same plasma parcels traveling from 0.1 to 1 au. Using magnetic field measurements from both spacecraft, the properties of turbulence in the two intervals are assessed. Magnetic spectral density, flatness, and high-order moment scaling laws are calculated. The Hilbert–Huang transform is additionally used to mitigate short sample and poor stationarity effects. Results show that the plasma evolves from a highly Alfvénic, less-developed turbulence state near the Sun, to fully developed and intermittent turbulence at 1 au. These observations provide strong evidence for the radial evolution of solar wind turbulence.
Date Issued
2021-05-06
Date Acceptance
2021-04-14
Citation
Letters of the Astrophysical Journal, 2021, 912 (2), pp.1-8
ISSN
2041-8205
Publisher
American Astronomical Society
Start Page
1
End Page
8
Journal / Book Title
Letters of the Astrophysical Journal
Volume
912
Issue
2
Copyright Statement
© 2021. The American Astronomical Society. All rights reserved. This is an author-created, un-copyedited version of an article accepted for publication in The Astrophysical Journal Letters. IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at https://doi.org/10.3847/2041-8213/abf7d1.
Sponsor
Imperial College London
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000648772000001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
EMPIRICAL MODE DECOMPOSITION
HIGH-SPEED STREAMS
INTERMITTENCY
FLUCTUATIONS
FREQUENCY
WAVES
ANISOTROPY
ORIGINS
SCALES
SPACE
Publication Status
Published
Article Number
ARTN L21
Date Publish Online
2021-05-06