Results 101 to 110 of about 31,268 (166)

Damping of Strong GHz Waves near Magnetars and the Origin of Fast Radio Bursts

open access: yesThe Astrophysical Journal
We investigate how a fast radio burst (FRB) emitted near a magnetar would propagate through its surrounding dipole magnetosphere at radii r = 10 ^7 –10 ^9 cm.
Andrei M. Beloborodov
doaj   +1 more source

The Uniturbulence and Alfvén Wave Solar Model (UAWSoM) in MPI-AMRVAC

open access: yesAstronomy & Astrophysics
Context. The coronal heating problem and the generation of the solar wind remain fundamental challenges in solar physics. While approaches based on, e.g., the Alfvén Wave Solar Model (AWSoM) have proven highly successful in reproducing the large-scale ...
McMurdo M.   +4 more
doaj   +1 more source

Transverse MHD Waves as Signatures of Braiding-induced Magnetic Reconnection in Coronal Loops

open access: yesThe Astrophysical Journal Letters
A major coronal heating theory based on magnetic reconnection relies on the existence of braided magnetic field structures in the corona. In this small-angle reconnection scenario, numerical simulations indicate that the reconnected magnetic field lines ...
A. Ramada C. Sukarmadji, Patrick Antolin
doaj   +1 more source

Wave Energy Conversion Technology Based on Liquid Metal Magnetohydrodynamic Generators and Its Research Progress

open access: yesEnergies
Wave energy is a highly concentrated energy resource with five times higher energy density than wind and at least ten times the power density of solar energy.
Lingzhi Zhao, Aiwu Peng
doaj   +1 more source

Models for application of radiation boundary condition for MHD waves in collapse calculations [PDF]

open access: yes
The problem of reflection of magnetohydrodynamic (MHD) waves at the boundary of a numerical grid has to be resolved in order to obtain reliable results for the end state of the (isothermal) collapse of a rotating, magnetic protostellar cloud.
Black, D. C.   +2 more
core   +1 more source

Formation of Fine Structures in Incompressible Hall Magnetohydrodynamic Turbulence Simulations

open access: yesPlasma
Hall magnetohydrodynamic simulations are often carried out to study the subjects of instabilities and turbulence of space and nuclear fusion plasmas in which sub-ion-scale effects are important.
Hideaki Miura
doaj   +1 more source

A new model for heating of Solar North Polar Coronal Hole

open access: yes, 2015
This paper presents a new model of North Polar Coronal Hole (NPCH) to study dissipation/propagation of MHD waves. We investigate the effects of the isotropic viscosity and heat conduction on the propagation characteristics of the MHD waves in NPCH.
Devlen, E.   +3 more
core  

Modeling the Excitation, Propagation, and Damping of Quasiperiodic Fast Magnetosonic Waves in Realistic Coronal Active Region Magnetic Field Structures

open access: yesThe Astrophysical Journal
Quasiperiodic fast propagating (QFP) magnetosonic waves have been discovered in the solar corona in the extreme ultraviolet (EUV) since the launch of the Solar Dynamics Observatory (SDO) spacecraft more than a decade ago.
Leon Ofman   +3 more
doaj   +1 more source

MHD waves at the pre-front of interplanetary shocks on September 6 and 7, 2017

open access: yesSolar-Terrestrial Physics
We analyze strong space weather disturbances during first ten days of September 2017, using the geomagnetic Dst index, parameters of normals to interplanetary shock fronts, direct measurements of interplanetary magnetic field, solar wind, and cosmic ray ...
Starodubtsev S. A., Shadrina L. P.
doaj   +1 more source

Hall MHD waves: A fundamental departure from their MHD counterparts

open access: yesPhysics of Plasmas
It is demonstrated through a succinct derivation as to how the linear waves in Hall magnetohydrodynamics (HMHD) constitute a fundamental departure from the standard MHD waves. Apart from modifying the conventional MHD spectrum, the Hall current induces a distinct and new branch consisting of purely circularly polarized waves that may become the ...
Swadesh M. Mahajan   +2 more
openaire   +2 more sources

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