4.5 Article

Electron Heating Associated With Magnetic Reconnection in Foreshock Waves: Particle-In-Cell Simulation Analysis

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Article Physics, Fluids & Plasmas

Hybrid simulations of the decay of reconnected structures downstream of the bow shock

I. Gingell et al.

Summary: Observations by Magnetospheric Multiscale have shown that magnetic reconnection occurs at Earth's bow shock, mainly in thin current sheets caused by plasma instabilities and turbulence. The number of current sheets in the shock transition and the magnetosheath downstream seems to be independent of the shock Mach number and the angle between the upstream magnetic field and shock normal. Hybrid particle-in-cell simulations were performed to investigate shock reconnection under different parameters, revealing a strong correlation between a specific ion-scale mechanism and quasi-parallel shocks. The quantification of reconnection through the area occupied by plasma on closed magnetic field lines shows that the number of reconnecting structures and closed field area increase with the shock Mach number and decrease with the angle between the upstream magnetic field and shock normal, but this relationship weakens downstream of the shock.

PHYSICS OF PLASMAS (2023)

Article Geosciences, Multidisciplinary

Electron Heating in Magnetosheath Turbulence: Dominant Role of the Parallel Electric Field Within Coherent Structures

Qianyun Xu et al.

Summary: This paper investigates the electron acceleration mechanism in strong turbulence in the Earth's magnetosheath based on novel observations. The study finds that electrons are magnetized in turbulent fields for the majority of the time and primarily accelerated by the parallel electric field within coherent structures. The acceleration rate increases as the spatial scale reduces, with the most intense acceleration occurring over about one ion inertial length.

GEOPHYSICAL RESEARCH LETTERS (2023)

Article Astronomy & Astrophysics

Magnetic Flux Transport Identification of Active Reconnection: MMS Observations in Earth's Magnetosphere

Yi Qi et al.

Summary: Magnetic reconnection is an important process for converting energy and modifying magnetic field topology. Identifying active reconnection regions with in situ observations is challenging, but the development of Magnetic Flux Transport (MFT) analysis provides a new and efficient method for this purpose. In this study, the MFT process is examined in 37 previously reported electron diffusion region/reconnection-line crossing events, and the results show that MFT can successfully identify active reconnection regions under complex and varied conditions.

ASTROPHYSICAL JOURNAL LETTERS (2022)

Article Geosciences, Multidisciplinary

Solitary Magnetic Structures Developed From Gyro-Resonance With Solar Wind Ions at Mars and Earth

Li-Jen Chen et al.

Summary: In this study, we investigate solitary magnetic structures in the foreshock of Mars and Earth. These structures exhibit pulse-like magnetic field and density enhancements, along with plasma heating and ion reflection. Our simulations reproduce these structures and illustrate their resonance with solar wind ions. The structures also present self-induced foreshock turbulence, which can have space weather effects. Our results advance the understanding of how the solar wind interacts with planetary magnetospheres and have potential implications for the escape of planetary-origin ions.

GEOPHYSICAL RESEARCH LETTERS (2022)

Article Physics, Fluids & Plasmas

Turbulence-driven magnetic reconnection and the magnetic correlation length: Observations from Magnetospheric Multiscale in Earth's magnetosheath

J. E. Stawarz et al.

Summary: This study examines the influence of magnetic correlation length on turbulence-driven reconnection using observations from the MMS mission. The results show that electron-only reconnection is more prevalent for shorter magnetic correlation lengths, leading to faster electron jet speeds and thinner current sheets.

PHYSICS OF PLASMAS (2022)

Article Geosciences, Multidisciplinary

Electron‐Scale Reconnection in Three‐Dimensional Shock Turbulence

J. Ng et al.

GEOPHYSICAL RESEARCH LETTERS (2022)

Article Astronomy & Astrophysics

Anisotropic Electron Heating in Turbulence-driven Magnetic Reconnection in the Near-Sun Solar Wind

Luca Franci et al.

Summary: A high-resolution, 2D, fully kinetic numerical simulation was conducted to investigate the interplay between turbulence, magnetic reconnection, and particle heating in the near-Sun solar wind. The power spectra of the turbulent plasma and electromagnetic fluctuations show multiple power-law intervals down to scales smaller than the electron gyroradius. Magnetic reconnection was observed to occur in correspondence of current sheets with interacting ion-scale vortices, leading to electron heating with the presence of strong turbulence.

ASTROPHYSICAL JOURNAL (2022)

Article Astronomy & Astrophysics

Magnetospheric Multiscale Observations of Waves and Parallel Electric Fields in Reconnecting Current Sheets in the Turbulent Magnetosheath

F. D. Wilder et al.

Summary: This study analyzed electron-scale current sheets and magnetic reconnection phenomena in the Earth's magnetosheath using data from NASA's Magnetospheric Multiscale mission, revealing the characteristics of energy conversion and the role of parallel electric fields and waves under different guide fields.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2022)

Article Astronomy & Astrophysics

Energy Partition at Collisionless Supercritical Quasi-Perpendicular Shocks

Steven J. Schwartz et al.

Summary: Collisionless shocks in astrophysical plasmas play a crucial role in converting incident flow energy into thermal energy and non-thermal energy. Solving the energy partition problem is the key challenge in shock physics.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2022)

Article Geosciences, Multidisciplinary

Solitary Magnetic Structures at Quasi-Parallel Collisionless Shocks: Formation

Li-Jen Chen et al.

Summary: The study investigates the formation of solitary magnetic structures known as SLAMS using measurements from the magnetospheric multiscale mission combined with fully kinetic simulations. The results indicate that gyro-resonance between solar wind ions and electromagnetic waves leads to magnetic field amplification, while the solitary nature of SLAMS is attributed to a specific magnetic field envelope.

GEOPHYSICAL RESEARCH LETTERS (2021)

Article Physics, Fluids & Plasmas

Energy dissipation in turbulent reconnection

R. Bandyopadhyay et al.

Summary: The study reveals that at reconnection sites, pressure-strain shows a signature of internal energy conversion; the electron heating rate is larger than the ion heating rate in all cases considered, with compressive heating dominant. The pressure-strain interaction can be used as an independent measure of energy conversion and dynamics in reconnection regions.

PHYSICS OF PLASMAS (2021)

Article Astronomy & Astrophysics

Bifurcated Current Sheet Observed on the Boundary of Kelvin-Helmholtz Vortices

K-J. Hwang et al.

Summary: The study observed a bifurcated current sheet at the boundary of Kelvin-Helmholtz vortices (KHVs) and investigated the structure and formation mechanisms of current sheets. It identified three separate current sheets in different regions, highlighting the importance of electron anisotropy and diamagnetic currents in the presence of density asymmetry and weak velocity shear. The study also found that the combined effects of strong guide field, low density asymmetry, and weak flow shear contribute to the asymmetries in current-layer structure.

FRONTIERS IN ASTRONOMY AND SPACE SCIENCES (2021)

Article Geosciences, Multidisciplinary

Non-Adiabatic Electron Heating in the Magnetic Islands During Magnetic Reconnection

Keizo Fujimoto et al.

Summary: A new mechanism for strong electron heating in magnetic islands ejected from the reconnection current layer is proposed in this study. Full kinetic simulations in a three-dimensional system show that electrons are effectively accelerated by the non-ideal electric field generated through electromagnetic turbulence in the magnetic islands. High-energy electrons are efficiently scattered by the turbulence, leading to strong electron heating, which is consistent with recent satellite observations in the Earth's magnetosphere.

GEOPHYSICAL RESEARCH LETTERS (2021)

Article Physics, Fluids & Plasmas

A statistical study of three-second foreshock ULF waves observed by the Magnetospheric Multiscale mission

Shan Wang et al.

Summary: This study conducts a statistical analysis of 3-s ultra-low frequency (ULF) waves in the Earth's foreshock region using Magnetospheric Multiscale observations. The average phase velocity of the waves in the plasma rest frame is determined to be anti-sunward, with a right-handed intrinsic polarization. The study further explores linear instability conditions based on observed plasma conditions, leading to findings of ion/ion right-hand non-resonant and left-hand resonant instabilities.

PHYSICS OF PLASMAS (2021)

Article Astronomy & Astrophysics

Multiscale MHD-Kinetic PIC Study of Energy Fluxes Caused by Reconnection

Giovanni Lapenta et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2020)

Article Astronomy & Astrophysics

Statistics of Reconnecting Current Sheets in the Transition Region of Earth's Bow Shock

I. Gingell et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2020)

Article Astronomy & Astrophysics

Magnetospheric Multiscale (MMS) Observations of Magnetic Reconnection in Foreshock Transients

Terry Z. Liu et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2020)

Article Physics, Fluids & Plasmas

Magnetic reconnection and kinetic waves generated in the Earth's quasi-parallel bow shock

N. Bessho et al.

PHYSICS OF PLASMAS (2020)

Article Astronomy & Astrophysics

A Case Study of Nonresonant Mode 3-s ULF Waves Observed by MMS

Shan Wang et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2020)

Article Astronomy & Astrophysics

Ion-scale Current Structures in Short Large-amplitude Magnetic Structures

Shan Wang et al.

ASTROPHYSICAL JOURNAL (2020)

Article Geosciences, Multidisciplinary

Observations of Magnetic Reconnection in the Transition Region of Quasi-Parallel Shocks

I Gingell et al.

GEOPHYSICAL RESEARCH LETTERS (2019)

Article Geosciences, Multidisciplinary

Observational Evidence of Magnetic Reconnection in the Terrestrial Bow Shock Transition Region

Shan Wang et al.

GEOPHYSICAL RESEARCH LETTERS (2019)

Article Physics, Fluids & Plasmas

Turbulent heating due to magnetic reconnection

M. A. Shay et al.

PHYSICS OF PLASMAS (2018)

Article Astronomy & Astrophysics

Energy Conversion and Partition in the Asymmetric Reconnection Diffusion Region

Shan Wang et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2018)

Article Physics, Fluids & Plasmas

Exploring the statistics of magnetic reconnection X-points in kinetic particle-in-cell turbulence

C. C. Haggerty et al.

PHYSICS OF PLASMAS (2017)

Article Astronomy & Astrophysics

MMS Observation of Magnetic Reconnection in the Turbulent Magnetosheath

Z. Voros et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2017)

Article Astronomy & Astrophysics

Particle Acceleration during Magnetic Reconnection in a Low-beta Plasma

Xiaocan Li et al.

ASTROPHYSICAL JOURNAL (2017)

Article Physics, Fluids & Plasmas

Parallel electric fields are inefficient drivers of energetic electrons in magnetic reconnection

J. T. Dahlin et al.

PHYSICS OF PLASMAS (2016)

Article Astronomy & Astrophysics

Asymmetric magnetic reconnection with a flow shear and applications to the magnetopause

C. E. Doss et al.

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS (2015)

Article Astronomy & Astrophysics

NONTHERMALLY DOMINATED ELECTRON ACCELERATION DURING MAGNETIC RECONNECTION IN A LOW-β PLASMA

Xiaocan Li et al.

ASTROPHYSICAL JOURNAL LETTERS (2015)

Article Physics, Fluids & Plasmas

Electron acceleration in three-dimensional magnetic reconnection with a guide field

J. T. Dahlin et al.

PHYSICS OF PLASMAS (2015)

Article Physics, Fluids & Plasmas

Electron heating during magnetic reconnection: A simulation scaling study

M. A. Shay et al.

PHYSICS OF PLASMAS (2014)

Article Physics, Fluids & Plasmas

The mechanisms of electron heating and acceleration during magnetic reconnection

J. T. Dahlin et al.

PHYSICS OF PLASMAS (2014)

Article Physics, Multidisciplinary

Energy Partition in Magnetic Reconnection in Earth's Magnetotail

J. P. Eastwood et al.

PHYSICAL REVIEW LETTERS (2013)

Review Astronomy & Astrophysics

The foreshock

JP Eastwood et al.

SPACE SCIENCE REVIEWS (2005)

Article Geosciences, Multidisciplinary

Nonlinear equilibrium structure of thin currents sheets: influence of electron pressure anisotropy

LM Zelenyi et al.

NONLINEAR PROCESSES IN GEOPHYSICS (2004)