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Related papers: Reconnection in the ISM

200 papers

In magnetic reconnection, the ion bulk outflow speed and ion heating have been shown to be set by the available reconnecting magnetic energy, i.e., the energy stored in the reconnecting magnetic field ($B_r$). However, recent simulations,…

Plasma Physics · Physics 2024-08-28 Carlos A. Giai , Colby C. Haggerty , Michael A. Shay , Paul A. Cassak

Magnetic reconnection is a fundamental plasma process that is thought to play a key role in the production of nonthermal particles associated with explosive phenomena in space physics and astrophysics. Experiments at high-energy-density…

Plasma Physics · Physics 2020-12-07 Samuel Totorica , Masahiro Hoshino , Tom Abel , Frederico Fiuza

An ionization front (I-front) that propagates through an inhomogeneous medium is slowed down by self-shielding and recombinations. We perform cosmological radiation hydrodynamics simulations of the I-front propagation during the epoch of…

Cosmology and Nongalactic Astrophysics · Physics 2024-02-12 Tsang Keung Chan , Alejandro Benitez-Llambay , Tom Theuns , Carlos Frenk , Richard Bower

Tearing instability, also known as plasmoid instability, is an effective mechanism to speed up magnetic reconnection process, working in a wide range of magnetized plasma systems with different spatial scales, ionization degrees, and…

Solar and Stellar Astrophysics · Physics 2026-02-24 Zehao Tang

Magnetic reconnection in curved spacetime is studied by adopting a general relativistic magnetohydrodynamic model that retains collisionless effects for both electron-ion and pair plasmas. A simple generalization of the standard…

High Energy Astrophysical Phenomena · Physics 2018-02-14 Luca Comisso , Felipe A. Asenjo

Fast Magnetic Reconnection is currently regarded as an important process also beyond the solar system, specially in magnetically dominated regions of galactic and extragalactic sources like the surrounds of black holes and relativistic…

UV bursts and Ellerman bombs are transient brightenings observed in the low solar atmospheres of emerging flux regions. Observations have discovered the cospatial and cotemporal EBs and UV bursts, and their formation mechanisms are still…

Solar and Stellar Astrophysics · Physics 2021-02-17 Lei Ni , Yajie Chen , Hardi Peter , Hui Tian , Jun Lin

Although thermal pressure is unimportant dynamically in most molecular gas, the temperature is an important diagnostic of dynamical processes and physical conditions. This is the first of two papers on thermal equilibrium in molecular…

Astrophysics · Physics 2009-10-31 Paolo Padoan , ; Ellen Zweibel , ; AAke Nordlund

We present a statistical analysis of ion distributions in magnetic reconnection jets using data from the Magnetospheric Multiscale spacecraft. Compared with the quiet plasma in which the jet propagates, we often find anisotropic and…

Space Physics · Physics 2023-10-11 L. Richard , Yu. V. Khotyaintsev , D. B. Graham , A. Vaivads , D. J. Gershman , C. T. Russell

Non-ideal magnetohydrodynamic effects that rule the coupling of the magnetic field to the circumstellar gas during the low-mass star formation process depend heavily on the local physical conditions, such as the ionization fraction of the…

We have studied the effect of time-dependent ionization and recombination processes on magnetic reconnection in the solar corona. Petschek-type steady reconnection, in which model the magnetic energy is mainly converted at the slow-mode…

Solar and Stellar Astrophysics · Physics 2015-05-30 S. Imada , I. Murakami , T. Watanabe , H. Hara , T. Shimizu

Magnetic reconnection is a fundamental process in solar system and astrophysical plasmas, through which stored magnetic energy associated with current sheets is converted into thermal, kinetic and wave energy. Magnetic reconnection is also…

Magnetic reconnection is a fundamental plasma process that plays a critical role not only in energy release in the solar atmosphere, but also in fusion, astrophysical, and other space plasma environments. One of the challenges in explaining…

Solar and Stellar Astrophysics · Physics 2020-10-14 L. -J. Guo , B. De Pontieu , Y. -M. Huang , H. Peter , A. Bhattacharjee

Using 3D particle-in-cell (PIC) simulations, we study magnetic reconnection with the x-line being spatially confined in the current direction. We include thick current layers to prevent reconnection at two ends of a thin current sheet that…

Plasma Physics · Physics 2019-05-29 Yi-Hsin Liu , Tak Chu Li , Michael Hesse , Weijie Sun , Jiang Liu , James Burch , James A. Slavin , Kai Huang

This paper investigates the influence of Earth's dipole tilt angle on the reverse convection cells (sometimes referred to as lobe cells) in the Northern Hemisphere ionosphere during northward IMF, which we relate to high-latitude…

Space Physics · Physics 2020-09-16 J. P. Reistad , K. M. Laundal , N. Østeward , A. Ohma , E. G. Thomas , S. Haaland , K. Oksavik , S. E. Milan

The filamentary structure of the molecular interstellar medium and the potential link of this morphology to star formation have been brought into focus recently by high resolution observational surveys. An especially puzzling matter is that…

Astrophysics of Galaxies · Physics 2016-04-20 Evangelia Ntormousi , Patrick Hennebelle , Philippe André , Jacques Masson

Context. Magnetohydrodynamic (MHD) waves are ubiquitous in the solar atmosphere. In magnetic waveguides resonant absorption due to plasma inhomogeneity naturally transfers wave energy from large-scale motions to small-scale motions. In the…

Solar and Stellar Astrophysics · Physics 2015-06-03 R. Soler , J. Andries , M. Goossens

The critical star formation rate density required to keep the intergalactic hydrogen ionised depends crucially on the average rate of recombinations in the intergalactic medium (IGM). This rate is proportional to the clumping factor C =…

Cosmology and Nongalactic Astrophysics · Physics 2009-12-22 Andreas H. Pawlik , Joop Schaye , Eveline van Scherpenzeel

A model of global magnetic reconnection rate in relativistic collisionless plasmas is developed and validated by the fully kinetic simulation. Through considering the force balance at the upstream and downstream of the diffusion region, we…

High Energy Astrophysical Phenomena · Physics 2016-05-19 Yi-Hsin Liu , Michael Hesse , Fan Guo , William Daughton , Hui Li

Our understanding of magnetic reconnection in resistive magnetohydrodynamics has gone through a fundamental change in recent years. The conventional wisdom is that magnetic reconnection mediated by resistivity is slow in laminar high…

Plasma Physics · Physics 2013-05-21 Yi-Min Huang , A. Bhattacharjee
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