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相关论文: Time-Varying Magnetopause Reconnection during Sudd…

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We test and compare a number of existing models predicting the location of magnetic reconnection at Earth's dayside magnetopause for various solar wind conditions. We employ robust image processing techniques to determine the locations…

空间物理 · 物理学 2015-04-24 C. M. Komar , R. L. Fermo , P. A. Cassak

During southward interplanetary magnetic field, dayside reconnection will drive the Dungey cycle in the magnetosphere, which is manifested as a two-cell convection pattern in the ionosphere. We address the response of the ionospheric…

空间物理 · 物理学 2017-05-23 K. Snekvik , N. Østgaard , P. Tenfjord , J. P. Reistad , K. M. Laundal , S. E. Milan , S. E. Haaland

The impact of high-speed jets -- dynamic pressure enhancements in the magnetosheath -- on the Earth's magnetopause has been observed to trigger local magnetic reconnection. We perform a three-dimensional hybrid simulation to study the…

空间物理 · 物理学 2024-06-19 J. Ng , L. -J. Chen , Y. Omelchenko

We present an analysis of local properties of magnetic reconnection at the dayside magnetopause for various interplanetary magnetic field (IMF) orientations in global magnetospheric simulations. This has heretofore not been practical…

空间物理 · 物理学 2016-07-27 Colin M. Komar , Paul A. Cassak

The magnetopause marks the outer edge of the Earth's magnetosphere and a distinct boundary between solar wind and magnetospheric plasma populations. In this letter, we use global magnetohydrodynamic simulations to examine the response of…

Three-dimensional global magnetohydrodynamic simulations of the solar wind - magnetosphere - ionosphere system are carried out to explore the dependence of the magnetospheric reconnection voltage, the ionospheric transpolar potential, and…

太阳与恒星天体物理 · 物理学 2009-04-07 XIONG Ming , PENG Zhong , HU Youqiu , ZHENG Huinan

Magnetic reconnection is one of the most universal processes in space plasma that is responsible for charged particle acceleration, mixing and heating of plasma populations. In this paper we consider a triggering process of reconnection…

Based on global hybrid simulation results, we predict that foreshock turbulence can reach the magnetopause and lead to reconnection as well as Earth-sized indents. Both the interplanetary magnetic field (IMF) and solar wind are constant in…

空间物理 · 物理学 2021-07-07 Li-Jen Chen , Jonathan Ng , Yuri Omelchenko , Shan Wang

We present a follow up study of the sensitivity of the Earth's magnetosphere to solar wind activity using a particles-in-cell model [Baraka and Ben Jaffel, 2007], but here during northward IMF. The formation of the magnetospheric cavity and…

空间物理 · 物理学 2011-01-06 Suleiman Baraka , Lotfi Ben-Jaffel

We propose that magnetic reconnection at the heliopause only occurs where the interstellar magnetic field points nearly anti-parallel to the heliospheric field. By using large-scale magnetohydrodynamic (MHD) simulations of the heliosphere…

地球与行星天体物理 · 物理学 2015-05-14 M. Swisdak , M. Opher , J. F. Drake , F. Alouani Bibi

We analyze a magnetotail reconnection onset event on 3 July 2017 that was observed under otherwise quiescent magnetospheric conditions by a fortuitous conjunction of six space and ground-based observatories. The study investigates the…

Solar wind parameters play a dominant role in reconnection rate, which controls the solar wind-magnetosphere coupling efficiency at Earth's magnetopause. Besides, low-energy ions from the ionosphere, frequently detected on the…

Magnetic reconnection (MR) is a key physical concept explaining the addition of magnetic flux to the magnetotail and closed flux lines back-motion to the dayside magnetosphere. This scenario elaborated by \citet{dung63}, can explain many…

空间物理 · 物理学 2014-12-01 Z. Vörös , G. Facskó , M. Khodachenko , I. Honkonen , P. Janhunen , M. Palmroth

Forced magnetic reconnection, a reconnection event triggered by external perturbation, should be ubiquitous in the solar corona. Energy released during such cases can be much greater than that which was introduced by the perturbation. It is…

太阳与恒星天体物理 · 物理学 2019-02-27 Max Potter , Philippa Browning , Mykola Gordovskyy

We use the MHD with embedded particle-in-cell model (MHD-EPIC) to study the Geospace Environment Modeling (GEM) dayside kinetic processes challenge event at 01:50-03:00 UT on 2015-11-18, when the magnetosphere was driven by a steady…

Magnetospheric Multiscale (MMS) encountered the primary low-latitude magnetopause reconnection site when the inter-spacecraft separation exceeded the upstream ion inertial length. Classical signatures of the ion diffusion region (IDR),…

During periods of strong magnetic activity, cold dense plasma from the plasmasphere typically forms a plume extending towards the dayside magnetopause, eventually reaching it. In this work, we present a large-scale two-dimensional fully…

等离子体物理 · 物理学 2020-03-04 Jérémy Dargent , Nicolas Aunai , Benoît Lavraud , Sergio Toledo-Redondo , Francesco Califano

Plasmoid instability is usually accounted for the onset of fast reconnection events observed in astrophysical plasmas. However, the measured reconnection rate from observations can be one order of magnitude higher than that derived from MHD…

太阳与恒星天体物理 · 物理学 2024-07-03 Abdullah Zafar , Lei Ni , Jun Lin , Ahmad Ali

We aim at investigating the formation of jet-like features in the lower solar atmosphere, e.g. chromosphere and transition region, as a result of magnetic reconnection. Magnetic reconnection as occurring at chromospheric and transition…

太阳与恒星天体物理 · 物理学 2015-05-30 J. Y. Ding , M. S. Madjarska , J. G. Doyle , Q. M. Lu , K. Vanninathan , Z. Huang

We perform a three-dimensional (3D) global simulation of Earth's magnetosphere with kinetic reconnection physics to study the flux transfer events (FTEs) and dayside magnetic reconnection with the recently developed magnetohydrodynamics…

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