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相关论文: Formation and evolution of a multi-threaded promin…

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In many astrophysical systems, mixing between cool and hot temperature gas/plasma through Kelvin-Helmholtz-instability-driven turbulence leads to the formation of an intermediate temperature phase with increased radiative losses that drive…

太阳与恒星天体物理 · 物理学 2023-02-16 Andrew Hillier , Ben Snow , Inigo Arregui

Many prominences are supported by magnetic flux ropes. One important question is how we can determine whether the flux rope is weakly-twisted or strongly-twisted. In this paper, we attempted to check whether prominences supported by…

太阳与恒星天体物理 · 物理学 2022-11-09 J. H. Guo , Y. W. Ni , Y. H. Zhou , Y. Guo , B. Schmieder , P. F. Chen

Prominence threads are dense and cold structures lying on curved magnetic fields that can be suspended in the solar atmosphere against gravity. The gravitational stability of threads, in the absence of non-ideal effects, is comprehensively…

太阳与恒星天体物理 · 物理学 2021-06-02 A. Adrover-González , J. Terradas , R. Oliver , M. Carbonell

Stellar flares affect all atmospheric layers from the photosphere over chromosphere and transition region up into the corona. Simultaneous observations in different spectral bands allow to obtain a comprehensive picture of the environmental…

太阳与恒星天体物理 · 物理学 2015-05-18 Carolin Liefke , Birgit Fuhrmeister , Juergen H. M. M. Schmitt

Large-scale coronal plasma evolutions can be adequately described by magnetohydrodynamics (MHD) equations. However, full multi-dimensional MHD simulations require substantial computational resources. Given the low plasma $\beta$ in the…

太阳与恒星天体物理 · 物理学 2024-04-29 Yuhao Zhou , Xiaohong Li , Rony Keppens

Both global dynamics and turbulence in magnetized weakly collisional cosmic plasmas are described by general magnetofluid equations that contain pressure anisotropies and heat fluxes that must be calculated from microscopic plasma kinetic…

宇宙学与河外天体物理 · 物理学 2015-05-14 A. A. Schekochihin , S. C. Cowley , F. Rincon , M. S. Rosin

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…

太阳与恒星天体物理 · 物理学 2026-02-24 Zehao Tang

We analyze the observations from Solar TErrestrial RElations Observatory (STEREO)-A\&B/COR-1 of an eruptive prominence in the intermediate corona on 7 June 2011 at 08:45 UT, which consists of magnetic Rayleigh-Taylor (MRT) unstable plasma…

太阳与恒星天体物理 · 物理学 2018-04-11 Sudheer K. Mishra , Talwinder Singh , P. Kayshap , A. K. Srivastava

The compact laboratory stand ``Solar Wind'' (Inst. Appl. Phys. of Russ. Acad. Sci.) forms an arch structure of the coronal loop type, in which the plasma pressure varies from zero to values of the order of and above the magnetic pressure.…

等离子体物理 · 物理学 2026-03-17 Sergey A. Koryagin , Mikhail E. Viktorov

Parker instability arises from the presence of magnetic fields in a plasma in a gravitational field such as the interstellar medium (ISM), wherein the magnetic buoyant pressure expels the gas and causes the gas to move along the field…

高能天体物理现象 · 物理学 2011-09-07 Chih-Yueh Wang , Ying-Yi Lo , Chung-Ming Ko

We present the observations of compound flux rope formation via merging of two nearby filament channels, associated dynamics and its stability that occurred on 2014 January 1 using multiwavelength data. We have also discussed the dynamics…

太阳与恒星天体物理 · 物理学 2015-06-22 Navin Chandra Joshi , Tetsuya Magara , Satoshi Inoue

The processes of the coronal plasma heating and cooling were previously shown to significantly affect the dynamics of slow magnetoacoustic (MA) waves, causing amplification or attenuation, and also dispersion. However, the entropy mode is…

太阳与恒星天体物理 · 物理学 2021-06-23 D. I. Zavershinskii , D. Y. Kolotkov , D. S. Riashchikov , N. E. Molevich

Small-amplitude prominence oscillations are usually damped after a few periods. We study the attenuation of non-adiabatic magnetoacoustic waves in a slab prominence embedded in the coronal medium. We assume an equilibrium configuration with…

天体物理学 · 物理学 2009-11-13 R. Soler , R. Oliver , J. L. Ballester

This is the first paper about the fragmentation and mass outflow in the molecular cloud by using three-dimensional MHD nested-grid simulations. The binary star formation process is studied paying particular attention to the fragmentation of…

天体物理学 · 物理学 2009-11-10 Masahiro N Machida , Kohji Tomisaka , Tomoaki Matsumoto

In weakly collisional extragalactic plasmas such as the intracluster medium, viscous stress and the rate of change of the magnetic-field strength are proportional to the local pressure anisotropy, so subject to constraints imposed by the…

宇宙学与河外天体物理 · 物理学 2015-08-26 Federico Mogavero , Alexander A. Schekochihin

There is evidence for coronal plasma flows to break down into fragments and to be laminar. We investigate this effect by modeling flows confined along magnetic channels. We consider a full MHD model of a solar atmosphere box with a dipole…

太阳与恒星天体物理 · 物理学 2017-12-27 A. Petralia , F. Reale , P. Testa

We have performed a three-dimensional magnetohydrodynamic simulation to study the emergence of a twisted magnetic flux tube from -20,000 km of the solar convection zone to the corona through the photosphere and the chromosphere. The middle…

太阳与恒星天体物理 · 物理学 2015-06-03 S. Toriumi , T. Yokoyama

In weakly magnetized, dilute plasmas in which thermal conduction along magnetic field lines is important, the usual convective stability criterion is modified. Instead of depending on entropy gradients, instability occurs for small…

天体物理学 · 物理学 2009-11-13 Ian J. Parrish , James M. Stone

We investigate the possibility of generating and studying turbulence in plasma by means of high-energy density laser-driven experiments. Our focus is to create supersonic, self-magnetized turbulence with characteristics that resemble those…

等离子体物理 · 物理学 2016-11-18 Timothy Handy , Tomasz Plewa , R. Paul Drake , Andrey Zhiglo

The dynamics of a plasmoid chain is studied with three dimensional Particle-in-Cell simulations. The evolution of the system with and without a uniform guide field, whose strength is 1/3 the asymptotic magnetic field, is investigated. The…

等离子体物理 · 物理学 2015-06-16 Stefano Markidis , Pierre Henri , Giovanni Lapenta , Andrey Divin , Martin Goldman , David Newman , Erwin Laure