Control of Magnetopause Flux Rope Topology by Non-local Reconnection

Dayside magnetic reconnection between the interplanetary magnetic field and the Earth’s magnetic field is the primary mechanism enabling mass and energy entry into the magnetosphere. During favorable solar wind conditions, multiple reconnection X-lines can form on the dayside magnetopause, potential...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Lars Mejnertsen, Jonathan P. Eastwood, Jeremy P. Chittenden
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	flux rope reconnection flux transfer events magnetosphere (magnetospheric configuration and dynamics) global modelling Astronomy QB1-991 Geophysics. Cosmic physics QC801-809
Acceso en línea:	https://doaj.org/article/7a721b75dbbc4d839ac96cbeb4e31c0a
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:7a721b75dbbc4d839ac96cbeb4e31c0a
record_format	dspace
spelling	oai:doaj.org-article:7a721b75dbbc4d839ac96cbeb4e31c0a2021-11-05T07:19:39ZControl of Magnetopause Flux Rope Topology by Non-local Reconnection2296-987X10.3389/fspas.2021.758312https://doaj.org/article/7a721b75dbbc4d839ac96cbeb4e31c0a2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fspas.2021.758312/fullhttps://doaj.org/toc/2296-987XDayside magnetic reconnection between the interplanetary magnetic field and the Earth’s magnetic field is the primary mechanism enabling mass and energy entry into the magnetosphere. During favorable solar wind conditions, multiple reconnection X-lines can form on the dayside magnetopause, potentially forming flux ropes. These flux ropes move tailward, but their evolution and fate in the tail is not fully understood. Whilst flux ropes may constitute a class of flux transfer events, the extent to which they add flux to the tail depends on their topology, which can only be measured in situ by satellites providing local observations. Global simulations allow the entire magnetospheric system to be captured at an instant in time, and thus reveal the interconnection between different plasma regions and dynamics on large scales. Using the Gorgon MHD code, we analyze the formation and evolution of flux ropes on the dayside magnetopause during a simulation of a real solar wind event. With a relatively strong solar wind dynamic pressure and southward interplanetary magnetic field, the dayside region becomes very dynamic with evidence of multiple reconnection events. The resulting flux ropes transit around the flank of the magnetosphere before eventually dissipating due to non-local reconnection. This shows that non-local effects may be important in controlling the topology of flux ropes and is a complicating factor in attempts to establish the overall contribution that flux ropes make in the general circulation of magnetic flux through the magnetosphere.Lars MejnertsenJonathan P. EastwoodJeremy P. ChittendenFrontiers Media S.A.articleflux ropereconnectionflux transfer eventsmagnetosphere (magnetospheric configuration and dynamics)global modellingAstronomyQB1-991Geophysics. Cosmic physicsQC801-809ENFrontiers in Astronomy and Space Sciences, Vol 8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	flux rope reconnection flux transfer events magnetosphere (magnetospheric configuration and dynamics) global modelling Astronomy QB1-991 Geophysics. Cosmic physics QC801-809
spellingShingle	flux rope reconnection flux transfer events magnetosphere (magnetospheric configuration and dynamics) global modelling Astronomy QB1-991 Geophysics. Cosmic physics QC801-809 Lars Mejnertsen Jonathan P. Eastwood Jeremy P. Chittenden Control of Magnetopause Flux Rope Topology by Non-local Reconnection
description	Dayside magnetic reconnection between the interplanetary magnetic field and the Earth’s magnetic field is the primary mechanism enabling mass and energy entry into the magnetosphere. During favorable solar wind conditions, multiple reconnection X-lines can form on the dayside magnetopause, potentially forming flux ropes. These flux ropes move tailward, but their evolution and fate in the tail is not fully understood. Whilst flux ropes may constitute a class of flux transfer events, the extent to which they add flux to the tail depends on their topology, which can only be measured in situ by satellites providing local observations. Global simulations allow the entire magnetospheric system to be captured at an instant in time, and thus reveal the interconnection between different plasma regions and dynamics on large scales. Using the Gorgon MHD code, we analyze the formation and evolution of flux ropes on the dayside magnetopause during a simulation of a real solar wind event. With a relatively strong solar wind dynamic pressure and southward interplanetary magnetic field, the dayside region becomes very dynamic with evidence of multiple reconnection events. The resulting flux ropes transit around the flank of the magnetosphere before eventually dissipating due to non-local reconnection. This shows that non-local effects may be important in controlling the topology of flux ropes and is a complicating factor in attempts to establish the overall contribution that flux ropes make in the general circulation of magnetic flux through the magnetosphere.
format	article
author	Lars Mejnertsen Jonathan P. Eastwood Jeremy P. Chittenden
author_facet	Lars Mejnertsen Jonathan P. Eastwood Jeremy P. Chittenden
author_sort	Lars Mejnertsen
title	Control of Magnetopause Flux Rope Topology by Non-local Reconnection
title_short	Control of Magnetopause Flux Rope Topology by Non-local Reconnection
title_full	Control of Magnetopause Flux Rope Topology by Non-local Reconnection
title_fullStr	Control of Magnetopause Flux Rope Topology by Non-local Reconnection
title_full_unstemmed	Control of Magnetopause Flux Rope Topology by Non-local Reconnection
title_sort	control of magnetopause flux rope topology by non-local reconnection
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/7a721b75dbbc4d839ac96cbeb4e31c0a
work_keys_str_mv	AT larsmejnertsen controlofmagnetopausefluxropetopologybynonlocalreconnection AT jonathanpeastwood controlofmagnetopausefluxropetopologybynonlocalreconnection AT jeremypchittenden controlofmagnetopausefluxropetopologybynonlocalreconnection
_version_	1718444477617537024

Control of Magnetopause Flux Rope Topology by Non-local Reconnection

Ejemplares similares