A weakly nonlinear Alfvénic pulse in a transversely inhomogeneous medium
نویسندگان
چکیده
منابع مشابه
Title : A weakly nonlinear Alfvénic pulse in a transversely inhomogeneous medium
The interaction of a weakly nonlinear Alfvénic pulse with an Alfvén speed inhomogeneity in the direction perpendicular to the magnetic field is investigated. Identical to the phase mixing experienced by a harmonic Alfvén wave, sharp transverse gradients are generated in the pulse by the inhomogeneity. In the initial stage of the evolution of an initially plane Alfvénic pulse, the transverse gra...
متن کاملA Weakly Nonlinear Alfvénic Pulse in a Transversely Inhomogeneous Medium
The interaction of a weakly nonlinear Alfvénic pulse with an Alfvén speed inhomogeneity in the direction perpendicular to the magnetic field is investigated. Identically to the phase mixing experienced by a harmonic Alfvén wave, sharp transverse gradients are generated in the pulse by the inhomogeneity. In the initial stage of the evolution of an initially plane Alfvénic pulse, the transverse g...
متن کاملA Strongly Nonlinear Alfvénic Pulse in a Transversely Inhomogeneous Medium
We investigate the interaction of a plane, linearly polarized, Alfvénic pulse with a one-dimensional, perpendicular to the magnetic field, plasma density inhomogeneity in the strongly nonlinear regime. Our numerical study of the full MHD equations shows that: (i) Plasma density inhomogeneity substantially enhances (by about a factor of 2) the generation of longitudinal compressive waves. (ii) A...
متن کاملAstronomy and Astrophysics a Three Dimensional Alfvénic Pulse in a Transversely Inhomogeneous Medium
Interaction of incompressible and compress-ible MHD fluctuations on a one-dimensional plasma inho-mogeneity, transverse to the magnetic field, is considered in the three-dimensional regime. An initially incompress-ible (Alfvénic) MHD fluctuation generates, by linear coupling , compressible (magnetoacoustic) fluctuations. In the initial stage of the interaction, the efficiency of the coupling is...
متن کاملA Three Dimensional Alfvénic Pulse in a Transversely Inhomogeneous Medium
Interaction of incompressible and compressible MHD fluctuations on a one-dimensional plasma inhomogeneity, transverse to the magnetic field, is considered in the three-dimensional regime. An initially incompressible (Alfvénic) MHD fluctuation generates, by linear coupling, compressible (magnetoacoustic) fluctuations. In the initial stage of the interaction, the efficiency of the coupling is enh...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Astronomy & Astrophysics
سال: 2001
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20011415