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The propagation of radio emission in pulsar magnetospheres is discussed. We follow a kinematics model in order to derive dispersion relations for electromagnetic oscillations and transversal waves, propagating in a cold moving plasma. We…

天体物理学 · 物理学 2009-11-13 Ericsson D. Lopez

We consider scattering of a plane electromagnetic wave by a wormhole. It is found that the scattered wave is partially depolarized and has a specific interference picture depending on parameters of the wormhole and the distance to the…

宇宙学与河外天体物理 · 物理学 2012-04-03 A. A. Kirillov , E. P. Savelova

The power of second harmonic electromagnetic emission is calculated for the case when strong plasma turbulence is excited by a powerful electron beam in a magnetized plasma. It is shown that the simple analytical model of strong plasma…

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

The effects of collective neutrino-plasma interactions on the linear wave spectrum supported by a magnetized electron-positron plasma in the presence of a neutrino-antineutrino medium are investigated. When a pair-symmetric background…

天体物理学 · 物理学 2008-11-26 Alain J. Brizard , Sarah L. McGregor

Extensive particle-in-cell simulations of fast electron beams injected in a background magnetised plasma with a decreasing density profile were carried out. These simulations were intended to further shed light on a newly proposed mechanism…

太阳与恒星天体物理 · 物理学 2013-07-15 H. Schmitz , D. Tsiklauri

The interaction between electromagnetic waves and objects is strongly affected by the shape and material composition of the latter. Artificially created materials, formed by a subwavelength structuring of their unit cells, namely…

经典物理 · 物理学 2018-02-07 Dmitry Filonov , Andrey Shmidt , Amir Boag , Pavel Ginzburg

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

One dimensional Particle-in-cell simulations using OSIRIS-4.0 has been conducted to study the interaction of a laser electromagnetic pulse with an overdense magnetized plasma target. The external magnetic field has been chosen to be…

等离子体物理 · 物理学 2022-03-24 Laxman Prasad Goswami , Rohit Juneja , Dhalia Trishul , Srimanta Maity , Sathi Das , Amita Das

A theory of quantum-mechanical generation of cosmological perturbations is considered. The conclusion of this study is that if the large-angular-scale anisotropy in the cosmic microwave background radiation is caused by the long-wavelength…

广义相对论与量子宇宙学 · 物理学 2009-09-25 L. P. Grishchuk

We analyze theoretically the oscillations that the magnetoresistivity of two-dimensional electron systems present when a high intensity direct current is applied. In the model presented here we suggest that a plasma wave is excited in the…

介观与纳米尺度物理 · 物理学 2009-11-13 Jesus Inarrea

Microturbulence, i.e. enhanced fluctuations of plasma density, electric and magnetic fields, is of great interest in astrophysical plasmas, but occurs on spatial scales far too small to resolve by remote sensing, e.g., at ~ 1-100 cm in the…

天体物理学 · 物理学 2009-11-13 Gelu M. Nita , Dale E. Gary , Gregory D. Fleishman

A theory of matter wave interference is developed in which resonant optical fields interact with two-level atoms. When recoil effects are included, spatial modulation of the atomic density can occur for times that are greater than or…

原子物理 · 物理学 2009-10-31 B. Dubetsky , P. R. Berman

For production of low temperature plasmas with low collisionality, 2.45GHz microwave power up to 20kW is injected perpendicularly to the toroidal field at very low toroidal field Bt

等离子体物理 · 物理学 2009-11-10 Ryosuke Ikeda , Masaki Takeuchi , Takafumi Ito , Kazuo Toi , Chihiro Suzuki , Go Matsunaga , Shoichi Okamura , Chs Group

Experimental results on an auto-oscillatory pattern observed in a complex plasma are presented. The experiments are performed with an argon plasma which is produced under microgravity conditions using a capacitively-coupled rf discharge at…

The interaction of two laser pulses in an underdense plasma has proven to be able to inject electrons in plasma waves, thus providing a stable and tunable source of electrons. Whereas previous works focused on the "beatwave" injection…

等离子体物理 · 物理学 2009-02-12 C. Rechatin , J. Faure , A. Lifschitz , X. Davoine , E. Lefebvre , V. Malka

A new experimental platform based on laser-plasma interaction is proposed to explore the fundamental processes of wave coupling at the origin of interplanetary radio emissions. It is applied to the study of electromagnetic (EM) emission at…

等离子体物理 · 物理学 2020-04-14 J. -R. Marquès , C. Briand , F. Amiranoff , S. Depierreux , M. Grech , L. Lancia , F. Pérez , A. Sgattoni , T. Vinci , C. Riconda

A feedforward scheme is applied for drift waves control in a magnetized magnetron sputtering plasma. A system of driven electrodes collecting electron current in a limited region of the explored plasma is used to interact with unstable…

等离子体物理 · 物理学 2015-06-19 E. Martines , M. Zuin , R. Cavazzana , J. Adámek , V. Antoni , G. Serianni , M. Spolaore , N. Vianello

The existence of low frequency waveguide modes of ion acoustic waves is demonstrated in magnetized plasmas for electron temperature striated along the magnetic field lines. At higher frequencies, in a band between the ion cyclotron and the…

等离子体物理 · 物理学 2010-04-28 P. Guio , H. L. Pecseli

We discuss possible origins of recently discovered microwave induced photoresistance oscillations in very-high-electron-mobility two-dimensional electron systems. We show that electrodynamic effects -- the radiative decay, plasma…

介观与纳米尺度物理 · 物理学 2009-11-10 S. A. Mikhailov

We propose that chirally asymmetric plasma can be produced in the gap regions of the magnetospheres of pulsars and black holes. We show that, in the case of supermassive black holes situated in active galactic nuclei, the chiral charge…

高能天体物理现象 · 物理学 2022-07-20 E. V. Gorbar , I. A. Shovkovy