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Related papers: Axion magnetohydrodynamics and reconnection-driven…

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A new path for the generation of a sub-ion scale cascade in collisionless plasma turbulence, triggered by magnetic reconnection, is uncovered by means of high-resolution two-dimensional hybrid-kinetic simulations employing two complementary…

Space Physics · Physics 2017-11-29 L. Franci , S. S. Cerri , F. Califano , S. Landi , E. Papini , A. Verdini , L. Matteini , F. Jenko , P. Hellinger

Axions are hypothetical particles related to the violation of the charge-parity symmetry, being the most prone candidates for dark matter. Multiple attempts to prove their existence are currently performed in different physical systems.…

High Energy Physics - Phenomenology · Physics 2018-05-09 H. Terças , J. D. Rodrigues , J. T. Mendonça

An exact model for magnetized and rotating outflows, underpressured at their axis, is analysed by means of a nonlinear separation of the variables in the two-dimensional governing magnetohydrodynamic (MHD) equations for axisymmetric…

Astrophysics · Physics 2009-11-07 C. Sauty , E. Trussoni , K. Tsinganos

Particles are accelerated to very high, non-thermal energies during explosive energy-release phenomena in space, solar, and astrophysical plasma environments. While it has been established that magnetic reconnection plays an important role…

We study the system of interacting axions and magnetic fields in the early universe after the quantum chromodynamics phase transition, when axions acquire masses. Both axions and magnetic fields are supposed to be spatially inhomogeneous.…

High Energy Physics - Phenomenology · Physics 2022-04-11 Maxim Dvornikov

Magnetic reconnection is explored on the Terrestrial Reconnection Experiment (TREX) for asymmetric inflow conditions and in a configuration where the absolute rate of reconnection is set by an external drive. Magnetic pileup enhances the…

The polarization operator of an axion in a degenerate gas of electrons occupying the ground-state Landau level in a superstrong magnetic field $H\gg H_0=m_e^2c^3/e\hbar =4.41\cdot 10^{13}$ G is investigated in a model with a tree-level…

High Energy Physics - Phenomenology · Physics 2009-10-31 A. V. Borisov , P. E. Sizin

We show existence of strong negative correlation between the temporal variations of magnetic field toroidal component of the solar tachocline (the bottom of convective zone) and the Earth magnetic field (Y-component). The possibility that…

Solar and Stellar Astrophysics · Physics 2010-11-16 V. D. Rusov , E. P. Linnik , K. Kudela , S. Cht. Mavrodiev , I. V. Sharph , T. N. Zelentsova , R. Beglaryan , V. P. Smolyar , K. K. Merkotan

We discuss how the model of magnetic reconnection in the presence of turbulence proposed inLazarian & Vishniac 1999 makes the reconnection rate independent either of resistivity or microscopic plasma effects, but determined entirely by the…

High Energy Astrophysical Phenomena · Physics 2013-02-15 A. Lazarian , Huirong Yan

Recent investigations by Noordhuis et al. [1, 2] and others have demonstrated the occurrence of strong local inhomogeneous axion regions in the polar cap regions of neutron stars. These regions are characterized by static magnetic fields…

High Energy Physics - Phenomenology · Physics 2026-04-01 Iver H. Brevik , Moshe M. Chaichian , Tiberiu Harko , Yuri N. Obukhov

Magnetic reconnection is an important source of energetic particles in systems ranging from astrophysics to the laboratory. The large separation of spatiotemporal scales involved makes it critical to determine the minimum physical model…

Most of the rotational luminosity of a pulsar is carried away by a relativistic magnetised wind in which the matter energy flux is negligible compared to the Poynting flux. Near the equatorial plane of an obliquely rotating pulsar…

Astrophysics · Physics 2009-06-23 Jerome Petri , Yuri Lyubarsky

The aim of this paper is to investigate the properties of magnetic reconnection at a 3D null point, with respect to their dependence on the symmetry of the magnetic field around the null. In particular we examine the rate of flux transport…

Solar and Stellar Astrophysics · Physics 2015-05-14 A. K. Al-Hachami , D. I. Pontin

We discuss axion dark matter detection via two mechanisms: spontaneous decays and resonant conversion in neutron star magnetospheres. For decays, we show that the brightness temperature signal, rather than flux, is a less ambiguous measure…

Cosmology and Nongalactic Astrophysics · Physics 2020-07-15 Richard A. Battye , Bjoern Garbrecht , Jamie I. McDonald , Francesco Pace , Sankarshana Srinivasan

In magnetized capacitively coupled radio-frequency discharges operated at low pressure the influence of the magnetic flux density on discharge properties has been studied recently both by experimental investigations and in simulations. It…

We show that a stable vortex soliton, carrying a constant magnetic flux, exists in the homogeneous medium of axions with a constant time-derivative. Axions can be bound in the vortex, having energy less than the axion mass. If the observed…

High Energy Physics - Phenomenology · Physics 2024-04-02 Deog Ki Hong , Stephen J. Lonsdale

Realistic astrophysical environments are turbulent due to the extremely high Reynolds numbers. Therefore, the theories of reconnection intended for describing astrophysical reconnection should not ignore the effects of turbulence on…

High Energy Astrophysical Phenomena · Physics 2016-03-09 A. Lazarian , G. Kowal , M. Takamoto , E. M. de Gouveia Dal Pino , J. Cho

We consider possible geometries of magnetic fields in GRB outflows, and their evolution with distance from the source. For magnetically driven outflows, with an assumed ratio of magnetic to kinetic energy density of order unity, the field…

Astrophysics · Physics 2009-10-31 H. C. Spruit , F. Daigne , G. Drenkhahn

This work employs Hall magnetohydrodynamic (MHD) simulations to study the X-lines formed during the reconnection of magnetic fields with differing strengths and orientations embedded in plasmas of differing densities. Although random…

Plasma Physics · Physics 2015-05-19 R. Schreier , M. Swisdak , J. F. Drake , P. A. Cassak

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…

Space Physics · Physics 2014-01-24 R. A. Treumann , W. Baumjohann
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