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相关论文: Magnetopause reconnection and indents induced by f…

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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…

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),…

The impinging solar wind and its magnetic field perturbed the Earth's magnetosphere and create magnetic storms and substorms. The Earth's magnetosphere expands (contracts) during periods of southward (northward) IMF. It is shown that these…

空间物理 · 物理学 2007-05-23 E. P. Savov

The outflowing magnetized wind from a host star shapes planetary and exoplanetary magnetospheres dictating the extent of its impact. We carry out three-dimensional (3D) compressible magnetohydrodynamic (MHD) simulations of the interactions…

地球与行星天体物理 · 物理学 2019-06-05 Srijan Bharati Das , Arnab Basak , Dibyendu Nandy , Bhargav Vaidya

Magnetic reconnection is a complex mechanism that converts magnetic energy into particle kinetic energy and plasma thermal energy in space and astrophysical plasmas. In addition, magnetic reconnection and turbulence appear to be intimately…

等离子体物理 · 物理学 2021-12-22 Rodrigo A. Miranda , Juan A. Valdivia , Abraham C. -L. Chian , Pablo R. Muñoz

The Magnetospheric Multiscale Mission (MMS) seeks to study the micro-physics of reconnection, which occurs at the magnetopause boundary layer between the magnetosphere of Earth and the interplanetary magnetic field originating from the sun.…

天体物理仪器与方法 · 物理学 2019-05-28 Samantha Piatt

It is known that the magnetic field of the Earth's closed magnetosphere can be highly displaced from the quiet-day configuration when interacting with the interplanetary magnetic field (IMF), an asymmetry largely controlled by the dawn-dusk…

Electron heating/acceleration in the foreshock, by which electrons may be energized beyond thermal energies prior to encountering the bow shock, is very important for the bow shock dynamics. And then these electrons would be more easily…

等离子体物理 · 物理学 2021-12-01 K. Jiang , S. Y. Huang , H. S. Fu , Z. G. Yuan , X. H. Deng , Z. Wang , Z. Z. Guo , S. B. Xu , Y. Y. Wei , J. Zhang , Z. H. Zhang , Q. Y. Xiong , L. Yu

Local magnetic reversals are an inseparable part of magnetohydrodynamic (MHD) turbulence whose collective outcome on an arbitrary scale in the inertial range may lead to a global stochastic reconnection event with a rate independent of…

高能天体物理现象 · 物理学 2021-01-20 Amir Jafari , Ethan Vishniac , Siyao Xu

Realistic astrophysical environments are turbulent due to the extremely high Reynolds numbers. Therefore, the theories of reconnection intended for describing astrophysical reconnection should not ignore the effects of turbulence on…

高能天体物理现象 · 物理学 2016-03-09 A. Lazarian , G. Kowal , M. Takamoto , E. M. de Gouveia Dal Pino , J. Cho

Magnetic reconnection and turbulence are deeply intertwined in magnetohydrodynamic flows, yet how reconnection self-generates turbulence remains unclear. Using an ensemble of high-resolution three-dimensional direct numerical simulations of…

等离子体物理 · 物理学 2026-02-26 Nick Williams , Alessandro De Rosis , Alex Skillen

We analyze the development and influence of turbulence in three-dimensional particle-in-cell simulations of guide-field magnetic reconnection at the magnetopause with parameters based on observations of an electron diffusion region by the…

空间物理 · 物理学 2020-05-06 L. Price , M Swisdak , J. F. Drake , D. B. Graham

Deviations of the interplanetary magnetic field (IMF) from Parker's model are frequently observed in the heliosphere at different distances r from the Sun. Usually, it is supposed that the IMF behavior corresponds to Parker's model overall,…

空间物理 · 物理学 2012-12-06 Olga Khabarova , Vladimir Obridko

Astrophysical fluids, including interstellar and interplanetary medium, are magnetized and turbulent. Their appearance, evolution, and overall properties are determined by the magnetic turbulence that stirs it. We argue that examining…

天体物理学 · 物理学 2009-11-13 A. Lazarian , A. Beresnyak , H. Yan , M. Opher , Y. Liu

Magnetic reconnection is believed to be the driver of many explosive phenomena in Astrophysics, from solar to gamma-ray flares in magnetars and in the Crab nebula. However, reconnection rates from classic MHD models are far too slow to…

等离子体物理 · 物理学 2019-06-05 Emanuele Papini , Simone Landi , Luca Del Zanna

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

We present particle-in-cell simulations of collisionless magnetic reconnection in a system (like the magnetopause) with a large density asymmetry across the current layer. In the presence of an ambient component of the magnetic field…

空间物理 · 物理学 2015-06-26 M. Swisdak , B. N. Rogers , J. F. Drake , M. A. Shay

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…

Large compressions of the magnetopause are proposed to occasionally result from temporary encounters of the magnetosphere with dust streams in interplanetary space. Such streams may have their origin in cometary dust tails or asteroids…

空间物理 · 物理学 2012-01-17 R. A. Treumann , W. Baumjohann

We used the Lyon-Fedder-Mobarry global magnetohydrodynamics model to study the effects of the interplanetary magnetic field (IMF) IMF $\mathit{B}_{y}$ component on the coupling between the solar wind and magnetosphere-ionosphere system.…

空间物理 · 物理学 2016-06-06 P. Tenfjord , N. Østgaard , K. Snekvik , K. M. Laundal , J. P. Reistad , S. Haaland , S. E. Milan