Asset Details
Do you wish to reserve the book?
Electron Acceleration by Interaction of Two Filamentary Currents Within a Magnetopause Magnetic Flux Rope
Hey, we have placed the reservation for you!
By the way, why not check out events that you can attend while you pick your title.
Oops! Something went wrong.
Looks like we were not able to place the reservation. Kindly try again later.
Are you sure you want to remove the book from the shelf?
Electron Acceleration by Interaction of Two Filamentary Currents Within a Magnetopause Magnetic Flux Rope
Do you wish to request the book?
Electron Acceleration by Interaction of Two Filamentary Currents Within a Magnetopause Magnetic Flux Rope
Please be aware that the book you have requested cannot be checked out. If you would like to checkout this book, you can reserve another copy
We have requested the book for you!
Your request is successful and it will be processed during the Library working hours. Please check the status of your request in My Requests.
Oops! Something went wrong.
Looks like we were not able to place your request. Kindly try again later.
Journal Article
Electron Acceleration by Interaction of Two Filamentary Currents Within a Magnetopause Magnetic Flux Rope
2023
Overview
Two types of filamentary currents (FCs) were observed inside a magnetic flux rope at the magnetopause by the Magnetospheric Multiscale mission. The first FC is identified as an electron vortex, while the other is a reconnecting current sheet. Stochastic electric fields were generated within the FCs, resulting in electron acceleration up to a few keV, similar to recent simulations of electron acceleration inside vortex, which is a second‐order Fermi acceleration. Furthermore, two FCs propagated at different speeds, causing compression in the region between them. Energetic electrons up to 200 keV were detected in the compressed region and displayed a double power‐law spectrum. Observations suggest that the electrons were mainly accelerated by betatron mechanism in the compressed region. The formation, evolution, and interaction of FCs provide a novel mechanism for electron acceleration. These results clearly show the significance of electron‐scale dynamics within flux rope. Plain Language Summary Magnetic reconnection is a fundamental plasma process by which magnetic energy is converted into the kinetic energy of charged particles. Understanding the acceleration mechanisms for the energetic electrons during magnetic reconnection is a long‐standing question in the study of space and astrophysical plasmas. Using Magnetospheric Multiscale observations at Earth's magnetopause, we present in situ evidence of electron acceleration up to 200 keV between two consecutive filamentary currents (FCs) inside a magnetic flux rope. Two FCs propagate at different speeds, with the second moving faster, thus causing a compressed region between them. These results provide an important new way for electron acceleration in magnetic reconnection. Key Points Two types of filamentary currents (FCs) were observed near the center of a magnetic flux rope Stochastic electric fields were generated inside two FCs and accelerated electrons Electrons were accelerated up to 200 keV in the compressed region between two currents by the betatron mechanism
Publisher
John Wiley & Sons, Inc,Wiley
Subject
/ Vortices
