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The guiding center formalism is employed to analyze the motion of a charged relativistic particle in an inhomogeneous magnetic field, subject to magnetic mirroring and energy loss due to cooling. The governing equation for the evolution of…

高能天体物理现象 · 物理学 2026-04-17 Mikhail V. Medvedev , Anatoly Spitkovsky , Alexander Philippov

Magnetic reconnection requires the violation of the frozen-in condition which ties gyrating charged particles to the magnetic field inhibiting diffusion. Ongoing reconnection has been identified in near-Earth space as being responsible for…

空间物理 · 物理学 2014-01-24 R. A. Treumann , W. Baumjohann

We develop a first-principles model for the relativistic magnetic reconnection rate in strongly magnetized pair plasmas. By considering the energy budget and required current density near the x-line, we analytically show that in the…

高能天体物理现象 · 物理学 2023-01-31 Matthew Goodbred , Yi-Hsin Liu

Magnetic reconnection is a basic plasma process of dramatic rearrangement of magnetic topology, often leading to a violent release of magnetic energy. It is important in magnetic fusion and in space and solar physics --- areas that have so…

高能天体物理现象 · 物理学 2015-05-27 Dmitri A. Uzdensky

Magnetic reconnection with asymmetry in the outflow direction occurs in the Earth's magnetotail, coronal mass ejections, flux cancellation events, astrophysical disks, spheromak merging experiments, and elsewhere in nature and the…

等离子体物理 · 物理学 2010-09-16 N. A. Murphy , C. R. Sovinec , P. A. Cassak

Magnetic reconnection is a fundamental process in a plasma that facilitates the release of energy stored in the magnetic field by permitting a change in the magnetic topology. In this article we present a review of the current state of…

太阳与恒星天体物理 · 物理学 2012-07-04 D. I. Pontin

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

Synchrotron radiation is widely considered as the origin of the pulsed non-thermal emissions from rotation-powered pulsars in optical and X-ray bands. In this paper, we study the synchrotron radiation emitted by the created electron and…

高能天体物理现象 · 物理学 2017-03-15 Shota Kisaka , Shuta J. Tanaka

It is commonly believed that blazar jets are relativistic magnetized plasma outflows from supermassive black holes. One key question is how the jets dissipate magnetic energy to accelerate particles and drive powerful multi-wavelength…

高能天体物理现象 · 物理学 2022-01-26 Haocheng Zhang , Xiaocan Li , Dimitrios Giannios , Fan Guo , Hannes Thiersen , Markus Böttcher , Tiffany Lewis , Tonia Venters

We show that magnetic reconnection in a magnetically-dominated fast-cooling plasma can naturally produce bright flares accompanied by rotations in the synchrotron polarization vector. With particle-in-cell simulations of reconnection, we…

高能天体物理现象 · 物理学 2020-07-30 David N. Hosking , Lorenzo Sironi

First results are presented from kinetic numerical simulations of relativistic collisionless magnetic reconnection in pair plasma that include radiation reaction from both synchrotron and inverse Compton (IC) processes, motivated by…

高能天体物理现象 · 物理学 2018-07-18 Krzysztof Nalewajko , Yajie Yuan , Martyna Chruślińska

We perform two-dimensional particle-in-cell simulations of reconnection in magnetically dominated electron-positron plasmas subject to strong Compton cooling. We vary the magnetization $\sigma\gg1$, defined as the ratio of magnetic tension…

高能天体物理现象 · 物理学 2021-09-16 Navin Sridhar , Lorenzo Sironi , Andrei M. Beloborodov

Magnetic reconnection occurs when two plasmas having co-planar but anti-parallel magnetic fields meet. At the contact point, the field is locally annihilated and the magnetic energy can be released into the surrounding plasma. Theory and…

Electron-positron pairs may be produced near accreting black holes by a variety of physical processes, and the resulting pair plasma may be accelerated and collimated into a relativistic jet. Here we use a self-consistent dynamical and…

高能天体物理现象 · 物理学 2015-05-27 Monika Moscibrodzka , Charles F. Gammie , Joshua C. Dolence , Hotaka Shiokawa

Magnetic reconnection is often invoked to explain the non-thermal radiation of relativistic outflows, including jets of active galactic nuclei (AGN). Motivated by the largely unknown plasma composition of AGN jets, we study reconnection in…

高能天体物理现象 · 物理学 2019-07-31 Maria Petropoulou , Lorenzo Sironi , Anatoly Spitkovsky , Dimitrios Giannios

Magnetic reconnection, the rearrangement of magnetic field topology, is a fundamental physical process in magnetized plasma systems all over the universe1,2. Its process is difficult to be directly observed. Coronal structures, such as…

太阳与恒星天体物理 · 物理学 2016-09-21 Leping Li , Jun Zhang , Hardi Peter , Eric Priest , Huadong Chen , Lijia Guo , Feng Chen , Duncan Mackay

The discovery of rapid synchrotron gamma-ray flares above 100 MeV from the Crab Nebula has attracted new interest in alternative particle acceleration mechanisms in pulsar wind nebulae. Diffuse shock-acceleration fails to explain the flares…

高能天体物理现象 · 物理学 2015-06-17 Benoit Cerutti , Gregory R. Werner , Dmitri A. Uzdensky , Mitchell C. Begelman

Magnetic reconnection in strongly magnetized astrophysical plasma environments is believed to be the primary process for fast energy release and particle energization. Currently there is strong interest in relativistic magnetic…

高能天体物理现象 · 物理学 2020-08-26 Fan Guo , Yi-Hsin Liu , Xiaocan Li , Hui Li , William Daughton , Patrick Kilian

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…

Magnetic reconnection is a plasma phenomenon where a topological rearrangement of magnetic field lines with opposite polarity results in dissipation of magnetic energy into heat, kinetic energy and particle acceleration. Such a phenomenon…

高能天体物理现象 · 物理学 2016-08-31 Edoardo Striani , Andrea Mignone , Bhargav Vaidya , Gianluigi Bodo , Attilio Ferrari