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Realistic models of magnetic reconnection in the solar chromosphere must take into account that the plasma is partially ionized and that plasma conditions within any two magnetic flux bundles undergoing reconnection may not be the same.…

太阳与恒星天体物理 · 物理学 2015-06-03 Nicholas A. Murphy , Vyacheslav S. Lukin

Using fully kinetic 3D simulations, the reconnection dynamics of asymmetric current sheets are examined at the Earth's magnetopause. The plasma parameters are selected to model MMS magnetopause diffusion region crossings with guide fields…

等离子体物理 · 物理学 2018-07-04 Ari Le , William Daughton , Obioma Ohia , Li-Jen Chen , Yi-Hsin Liu , Shan Wang , William David Nystrom , Robert Bird

Energy dissipation in collisionless plasmas is one of the most outstanding open questions in plasma physics. Magnetic reconnection and turbulence are two phenomena that can produce the conditions for energy dissipation. These two phenomena…

等离子体物理 · 物理学 2024-08-07 Jeffersson Andres Agudelo Rueda , Yi-Hsin Liu , Kai Germaschewski , Michael Hesse , Naoki Bessho

We use Magnetospheric Multiscale (MMS) mission data to investigate electron-scale energy transfer due to lower hybrid drift waves during magnetopause reconnection. We analyze waves observed in an electron-scale plasma mixing layer at the…

空间物理 · 物理学 2025-04-04 Sabrina F. Tigik , Daniel B. Graham , Yuri V. Khotyaintsev

We study the compression driven magnetic reconnection in the relativistic electron-positron plasma. Making use of a 2.5D particle-in-cell code, we simulated compression of a magnetized plasma layer containing a current sheet within it. We…

天体物理学 · 物理学 2009-11-13 Yuri Lyubarsky , Michael Liverts

By means of a particle-in-cell (PIC) simulation, we study the interaction between a uniform magnetized ambient electron-proton plasma at rest and an unmagnetized pair plasma, which we inject at one simulation boundary with a mildly…

高能天体物理现象 · 物理学 2024-06-19 M E Dieckmann , D Folini , R Walder , A Charlet , A Marcowith

By means of two- and three-dimensional particle-in-cell simulations, we investigate the process of driven magnetic reconnection at the termination shock of relativistic striped flows. In pulsar winds and in magnetar-powered relativistic…

高能天体物理现象 · 物理学 2015-06-11 Lorenzo Sironi , Anatoly Spitkovsky

Magnetosphere at ion kinetic scales, or mini-magnetosphere, possesses unusual features as predicted by numerical simulations. However, there are practically no data on the subject from space observations and the data which are available are…

等离子体物理 · 物理学 2017-11-17 Shaikhislamov I F , Yu P Zakharov , V G Posukh , A V Melekhov , V M Antonov , E L Boyarintsev , A G Ponomarenko

Magnetic reconnection is a fundamental physical process converting magnetic energy into not only plasma energy but also particle energy in various astrophysical phenomena. In this letter, we show a unique dataset of a solar flare where…

太阳与恒星天体物理 · 物理学 2022-01-12 Lei Lu , Li Feng , Alexander Warmuth , Astrid M. Veronig , Jing Huang , Siming Liu , Weiqun Gan , Zongjun Ning , Beili Ying , Guannan Gao

A supersonic flow of magnetized plasma is produced by the application of a 1 MA-peak, 500 ns current pulse to a cylindrical arrangement of parallel wires, known as an inverse wire array. The plasma flow is produced by the JxB acceleration…

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

A new magnetic phase with $T_C = 72 \ \mathrm K$ was obtained by exposing the three-dimensional $\mathrm{\{ [Mn^{II}(H_2O)_2]_2[Nb^{IV}(CN)_8] \cdot 4H_2O \} _n}$ coordination ferrimagnet ($T_C = 49 \ \mathrm K$) to air, oxygen, nitrogen,…

材料科学 · 物理学 2024-02-29 Dominik Czernia , Piotr Konieczny , Marcin Perzanowski , Beata Nowicka , Dawid Pinkowicz

Magnetic reconnection is a ubiquitous and fundamental process in plasmas by which magnetic fields change their topology and release magnetic energy. Despite decades of research, the physics governing the reconnection process in many…

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

Magnetic reconnection is a process that converts magnetic energy into plasma energy by changing the magnetic field line topology. The outstanding question is why the reconnection rate is $\mathcal{O}(0.01 - 0.1)$ in many astrophysical…

太阳与恒星天体物理 · 物理学 2025-07-17 Keita Akutagawa , Shinsuke Imada , Munehito Shoda

Magnetic reconnection is thought to be the driver for many explosive phenomena in the universe. The energy release and particle acceleration during reconnection have been proposed as a mechanism for producing high-energy emissions and…

高能天体物理现象 · 物理学 2015-04-10 Fan Guo , Yi-Hsin Liu , William Daughton , Hui Li

In magnetized astrophysical outflows, the dissipation of field energy into particle energy via magnetic reconnection is often invoked to explain the observed non-thermal signatures. By means of two- and three-dimensional particle-in-cell…

高能天体物理现象 · 物理学 2015-06-18 Lorenzo Sironi , Anatoly Spitkovsky

Recent advancements in low-frequency short-pulse $CO_2$ lasers and the production of strong magnetic fields have made experimental studies on laser interactions with magnetized plasma a near-future possibility. Therefore, theoretical and…

等离子体物理 · 物理学 2023-11-22 Laxman Prasad Goswami , Amita Das , Anuj Vijay

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…

Simulations have played a critical role in the advancement of our knowledge of magnetic reconnection. However, due to the inherently multiscale nature of reconnection, it is impossible to simulate all physics at all scales. For this reason,…