1
IRUS Total
Downloads
  Altmetric

On the ubiquity of magnetic reconnection inside flux transfer event‐like structures at the earth's magnetopause

File Description SizeFormat 
Fargette_GRL_2020_accepted.pdfAccepted version1.25 MBAdobe PDFView/Open
Title: On the ubiquity of magnetic reconnection inside flux transfer event‐like structures at the earth's magnetopause
Authors: Fargette, N
Lavraud, B
Øieroset, M
Phan, TD
Toledo‐Redondo, S
Kieokaew, R
Jacquey, C
Fuselier, SA
Trattner, KJ
Petrinec, S
Hasegawa, H
Garnier, P
Génot, V
Lenouvel, Q
Fadanelli, S
Penou, E
Sauvaud, J
Avanov, DLA
Burch, J
Chandler, MO
Coffey, VN
Dorelli, J
Eastwood, JP
Farrugia, CJ
Gershman, DJ
Giles, BL
Grigorenko, E
Moore, TE
Paterson, WR
Pollock, C
Saito, Y
Schiff, C
Smith, SE
Item Type: Journal Article
Abstract: Flux transfer events (FTEs) are transient phenomena frequently observed at the Earth's magnetopause. Their usual interpretation is a flux rope moving away from the reconnection region. However, the Magnetospheric Multiscale Mission revealed that magnetic reconnection sometimes occurs inside these structures, questioning their flux rope configuration. Here we investigate 229 FTE‐type structures and find reconnection signatures inside 19% of them. We analyze their large‐scale magnetic topology using electron heat flux and find that it is significantly different across the FTE reconnecting current sheets, demonstrating that they are constituted of two magnetically disconnected structures. We also find that the interplanetary magnetic field (IMF) associated with reconnecting FTEs presents a strong By component. We discuss several formation mechanisms to explain these observations. In particular, the maximum magnetic shear model predicts that for large IMF By, two spatially distinct X lines coexist at the magnetopause. They can generate separate magnetic flux tubes that may become interlaced.
Issue Date: 28-Mar-2020
Date of Acceptance: 29-Feb-2020
URI: http://hdl.handle.net/10044/1/77669
DOI: 10.1029/2019gl086726
ISSN: 0094-8276
Publisher: American Geophysical Union (AGU)
Start Page: 1
End Page: 9
Journal / Book Title: Geophysical Research Letters
Volume: 47
Issue: 6
Copyright Statement: ©2020. American Geophysical Union. All Rights Reserved. This is the accepted version of the following article: Fargette, N., Lavraud, B., Øieroset, M., Phan, T. D., Toledo‐Redondo, S., Kieokaew, R., et al. ( 2020). On the ubiquity of magnetic reconnection inside flux transfer event‐like structures at the Earth's magnetopause. Geophysical Research Letters, 47, e2019GL086726, which has been published in final form at https://doi.org/10.1029/2019GL086726
Sponsor/Funder: Science and Technology Facilities Council (STFC)
Funder's Grant Number: ST/S000364/1
Keywords: Meteorology & Atmospheric Sciences
Publication Status: Published
Online Publication Date: 2020-03-05
Appears in Collections:Space and Atmospheric Physics
Physics



Unless otherwise indicated, items in Spiral are protected by copyright and are licensed under a Creative Commons Attribution NonCommercial NoDerivatives License.

Creative Commons