Detection Capability of Flux Ropes during the Solar Orbiter Mission

Journal
Date Issued
2020
Author(s)
•
•
•
Carbone, Francesco
•
•
Zank, Gary P.
•
Zhao, Lingling
•
Nakanotani, Masaru
•
Adhikari, Laxman
DOI
Abstract
Flux ropes are interplanetary magnetic helical structures that are receiving increasing attention because of their likely role in magnetohydrodynamic (MHD) processes as well as their impact on space weather science. A very promising and powerful approach to address their investigation and characterization is based on wavelet spectrograms of the invariants of the ideal MHD equations. The accuracy of this method to infer flux rope properties depends on the proper evaluation of the direction of propagation of the flux rope itself, which is often difficult to assess. We present a numerical test of the reliability of this diagnostic technique, by simulating a synthetic flux rope of fixed size and propagation direction along the Solar Orbiter orbit, that is very elongated and inclined with respect to the orbital plane. We find that when the flux rope is crossed for less than 50% of its width, the procedure becomes unreliable. Quantitative information on how to properly recover the flux-rope intrinsic properties is provided.
Volume
899
Issue
2
Start page
L25
Uri
Url
Issn Identifier
2041-8205
Ads BibCode
2020ApJ...899L..25T
Rights
embargo
File(s)
Loading...
Thumbnail Image
Name

telloni_apjl_preprint.pdf

Description
preprint
Size

1.57 MB

Format

Adobe PDF

Checksum (MD5)

3062d21ef39259302d2ce009d9fc7d4a

Loading...
Thumbnail Image
Name

Telloni_2020_ApJL_899_L25.pdf

Description
Pdf editoriale
Size

1.11 MB

Format

Adobe PDF

Checksum (MD5)

e8e1c150edbd22ea6d4d6542799c61d9