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Extended periods of radio pulsations have been observed for six magnetars, displaying characteristics different from those of ordinary pulsars. In this Letter, we argue that radio emission is generated in a closed, twisted magnetic flux…

高能天体物理现象 · 物理学 2025-12-18 Shuzhe Zeng , Alexander Philippov , James Juno , Andrei M. Beloborodov , Elena Popova

We consider the weak turbulence of whistler waves in the in low-\beta\ inner magnetosphere of the Earth. Whistler waves with frequencies, originating in the ionosphere, propagate radially outward and can trigger nonlinear induced scattering…

等离子体物理 · 物理学 2012-03-23 C. Crabtree , L. Rudakov , G. Ganguli , M. Mithaiwala , V. Galinsky , V. Shevchenko

Recently, there has been a revival of interest in mechanisms for changing the spin polarization of an electron beam on transmission through, or reflection from, a magnetic surface. An understanding of these mechanisms would allow the use of…

凝聚态物理 · 物理学 2016-08-31 D. C. Hatton , J. A. C. Bland

We study the polarization properties of the jitter and synchrotron radiation produced by electrons in highly turbulent anisotropic magnetic fields. The net polarization is provided by the geometry of the magnetic field the directions of…

高能天体物理现象 · 物理学 2016-10-05 A. Yu. Prosekin , S. R. Kelner , F. A. Aharonian

A highly intense femtosecond laser pulse incident on a plasma target of supercritical density, gives rise to reflected high-order harmonics of the laser frequency. The radiation model adopted here considers Brunel electrons -those…

等离子体物理 · 物理学 2015-06-19 R. Ondarza-Rovira , T. J. M. Boyd

Renormalization of the Coulomb interaction in layered metals results in a strongly anisotropic plasma mode with low frequencies for small components of wave vector in the in-plane direction. Interaction of electrons with this mode was found…

超导电性 · 物理学 2007-05-23 S. N. Artemenko , S. V. Remizov

Understanding electron and ion heating phenomenon in capacitively coupled radio-frequency plasma discharges is vital for many plasma processing applications. In this article, using particle-in-cell simulation technique we investigate the…

等离子体物理 · 物理学 2023-09-26 Sarveshwar Sharma , Nishant Sirse , Miles M Turner , Animesh Kuley

Continuous plasma coherent emission is maintained by repetitive Langmuir collapse driven by the nonlinear evolution of a strong electron two-stream instability. The Langmuir waves are modulated by solitary waves in the linear stage, and by…

空间物理 · 物理学 2017-02-07 H. Che , M. L. Goldstein , P. H. Diamond , R. Z. Sagdeev

The nonlinear evolution of an ion ring instability in a low-beta magnetospheric plasma is considered. The evolution of the two-dimensional ring distribution is essentially quasilinear. Ignoring nonlinear processes the time-scale for the…

等离子体物理 · 物理学 2015-05-27 M. Mithaiwala , L. Rudakov1 , G. Ganguli , C. Crabtree

Magnetars are likely to be the origin of all fast radio bursts. The recent detection of circularly polarized bursts suggests that they might be generated deep inside magnetar magnetospheres. However, the mechanism behind the circular…

高能天体物理现象 · 物理学 2026-03-04 Da-Chao Deng , Hui-Chun Wu

We numerically study the nonlinear interactions of high-frequency circularly polarized electromagnetic (EM) waves and low-frequency electron-acoustic (EA) density perturbations driven by the EM wave ponderomotive force in relativistic…

等离子体物理 · 物理学 2026-01-27 S. Das Adhikary , A. P. Misra

The reason for the occurrence of different elements of the fine structure of solar radio bursts in the decimeter and centimeter wavelength ranges has been determined based on all available data from terrestrial and satellite observations.…

太阳与恒星天体物理 · 物理学 2017-11-22 G. P. Chernov , V. V. Fomichev , Y. Yan , B. Tan , Ch. Tan , Q. Fu

Compact plasmas, that exist near black-hole candidates and in gamma ray burst sources, commonly exhibit self-organized non-linear behavior. A model that simulates the non-linear behavior of compact radiative plasmas is constructed directly…

天体物理学 · 物理学 2009-10-30 Ran Sivron

Creation of electron-positron pairs near the pulsar surface and the parameters of plasma in pulsar magnetospheres are discussed. It is argued that the pair creation process is nonstationary, and the pair plasma that flows out from the…

天体物理学 · 物理学 2007-05-23 V. V. Usov

It is shown that the frequency distribution of the degree of circular polarisation for a homogeneous source is sensitive to the properties of the synchrotron emitting plasma. Most of the circular polarisation comes from the region around…

高能天体物理现象 · 物理学 2019-03-13 Claes-I. Bjornsson

The interaction of coherent nonlinear structures (such as sub-cycle solitons, electron vortices and wake Langmuir waves) with a strong wake wave in a collisionless plasma can be exploited in order to produce ultra-short electromagnetic…

等离子体物理 · 物理学 2009-11-11 S. S. Bulanov , T. Zh. Esirkepov , F. F. Kamenets , F. Pegoraro

Nonlinear interaction of a low density electron beam with a uniform plasma is studied using two-dimensional particle-in-cell (PIC) simulations. We focus on formation of coherent phase space structures in the case, when a wide…

等离子体物理 · 物理学 2012-05-21 I. V. Timofeev

We discuss non-thermal emission mechanism of the Crab-like pulsars with both a two-dimensional electrodynamical study and a three-dimensional model. We investigate the emission process in the outer gap accelerator. In the two-dimensional…

天体物理学 · 物理学 2009-11-13 J. Takata , H. -K. Chang

We report that normal incidence reflection and transmission of circularly polarized electromagnetic waves from and through planar split-ring metamaterials with chiral symmetry breaking depends on the incidence direction and handedness of…

光学 · 物理学 2009-03-31 E. Plum , V. A. Fedotov , N. I. Zheludev

Time-dependent cascades of electron-positron pairs are thought to be the main source of plasma in pulsar magnetospheres and a primary ingredient to explain the nature of pulsar radio emission, a longstanding open problem in high-energy…

高能天体物理现象 · 物理学 2022-05-18 Fábio Cruz , Thomas Grismayer , Simon Iteanu , Paolo Tortone , Luis O. Silva