مقاله Effect of ion and electron beam on kinetic Alfven wave in an inhomogeneous magnetic field : تی پی بین

خلاصه مقاله

Kinetic Alfven waves are examined in the presence of electron and ion beam and an inhomogeneous magnetic field with bi-Maxwellian distribution function. The theory of particle aspect analysis is used to evaluate the trajectories of the charged particles. The expressions for the field-aligned currents, perpendicular currents (with respect to B ₀), dispersion relation and growth/damping rate with marginal instability criteria are derived. The effect of electron and ion beam and inhomogeneity of magnetic field are discussed. The results are interpreted for the space plasma parameter appropriate to the auroral acceleration region of the earth’s magnetoplasma.

نویسندگان

A. K. Dwivedi [ Department of Physics, Harish Chandra P.G. College, Varanasi, 221001, India ]

Sunil Kumar [ Department of Physics, Harish Chandra P.G. College, Varanasi, 221001, India ]

M. S. Tiwari [ Department of Physics, Dr. H.S. Gour University, Sagar, 470003, India ]

کلمات کلیدی

Kinetic Alfven wave Ion and electron beam Auroral currents Magnetic field inhomogeneity

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Astrophysics and Space Science 2013

Astrophysics and Space Science publishes original contributions and invited reviews covering the entire range of astronomy, astrophysics, astrophysical cosmology, planetary and space science and the astrophysical aspects of astrobiology. This includes both observational and theoretical research, the techniques of astronomical instrumentation and data analysis and astronomical space instrumentation. We particularly welcome papers in the general fields of high-energy astrophysics, astrophysical and astrochemical studies of the interstellar medium including star formation, planetary astrophysics, the formation and evolution of galaxies and the evolution of large scale structure in the Universe. Papers in mathematical physics or in general relativity which do not establish clear astrophysical applications will no longer be considered.The journal also publishes topically selected special issues in research fields of particular scientific interest. These consist of both invited reviews and original research papers. Conference proceedings will not be considered. All papers published in the journal are subject to thorough and strict peer-reviewing.Astrophysics and Space Science features short publication times after acceptance and colour printing free of charge.Commonly used title abbreviations: Astrophys Space Sci, Ap SS

حوزه های تحت پوشش : Astrophysics and Astroparticles Astronomy, Observations and Techniques Cosmology Extraterrestrial Physics, Space Sciences Astrobiology