Solar coronal electron heating by short-wavelength dispersive shear Alfvén waves

R. Bingham; P. K. Shukla; B. Eliasson; A. Cairns; R Alan Cairns

doi:10.1088/0031-8949/90/10/108004

Solar coronal electron heating by short-wavelength dispersive shear Alfvén waves

R. Bingham^*, P. K. Shukla, B. Eliasson, A. Cairns, R Alan Cairns

^*Corresponding author for this work

Applied Mathematics

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Abstract

The electron heating of the solar coronal plasma has remained one of the most important problems in solar physics. An explanation of the electron heating rests on the identification of the energy source and appropriate physical mechanisms via which the energy can be channelled to the electrons. Our objective here is to present an estimate for the electron heating rate in the presence of finite amplitude short-wavelength (in comparison with the ion gyroradius) dispersive shear Alfven (SWDSA) waves that propagate obliquely to the ambient magnetic field direction in the solar corona. Specifically, it is demonstrated that SWDSA waves can significantly contribute to the solar coronal electron heating via collisionless heating involving SWDSA wave-electron interactions.

Original language	English
Article number	108004
Pages (from-to)	1-4
Number of pages	4
Journal	Physica Scripta
Volume	90
Issue number	10
DOIs	https://doi.org/10.1088/0031-8949/90/10/108004
Publication status	Published - 15 Sept 2015

Keywords

Solar coronal heating
Dispersive shear Alfvén waves
Electron heating

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Cite this

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title = "Solar coronal electron heating by short-wavelength dispersive shear Alfv{\'e}n waves",

abstract = "The electron heating of the solar coronal plasma has remained one of the most important problems in solar physics. An explanation of the electron heating rests on the identification of the energy source and appropriate physical mechanisms via which the energy can be channelled to the electrons. Our objective here is to present an estimate for the electron heating rate in the presence of finite amplitude short-wavelength (in comparison with the ion gyroradius) dispersive shear Alfven (SWDSA) waves that propagate obliquely to the ambient magnetic field direction in the solar corona. Specifically, it is demonstrated that SWDSA waves can significantly contribute to the solar coronal electron heating via collisionless heating involving SWDSA wave-electron interactions.",

keywords = "Solar coronal heating, Dispersive shear Alfv{\'e}n waves, Electron heating",

author = "R. Bingham and Shukla, {P. K.} and B. Eliasson and A. Cairns and Cairns, {R Alan}",

note = "This work was partially supported by the STFC through the Centre for Fundamental Physics (CfFP) at Rutherford Appleton Laboratory, Chilton, Didcot, UK. BE acknowledges support by the Engineering and Physical Sciences Research Council (EPSRC), UK, Grant no EP/M009386/1. ",

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doi = "10.1088/0031-8949/90/10/108004",

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T1 - Solar coronal electron heating by short-wavelength dispersive shear Alfvén waves

AU - Bingham, R.

AU - Shukla, P. K.

AU - Eliasson, B.

AU - Cairns, A.

AU - Cairns, R Alan

N1 - This work was partially supported by the STFC through the Centre for Fundamental Physics (CfFP) at Rutherford Appleton Laboratory, Chilton, Didcot, UK. BE acknowledges support by the Engineering and Physical Sciences Research Council (EPSRC), UK, Grant no EP/M009386/1.

PY - 2015/9/15

Y1 - 2015/9/15

N2 - The electron heating of the solar coronal plasma has remained one of the most important problems in solar physics. An explanation of the electron heating rests on the identification of the energy source and appropriate physical mechanisms via which the energy can be channelled to the electrons. Our objective here is to present an estimate for the electron heating rate in the presence of finite amplitude short-wavelength (in comparison with the ion gyroradius) dispersive shear Alfven (SWDSA) waves that propagate obliquely to the ambient magnetic field direction in the solar corona. Specifically, it is demonstrated that SWDSA waves can significantly contribute to the solar coronal electron heating via collisionless heating involving SWDSA wave-electron interactions.

AB - The electron heating of the solar coronal plasma has remained one of the most important problems in solar physics. An explanation of the electron heating rests on the identification of the energy source and appropriate physical mechanisms via which the energy can be channelled to the electrons. Our objective here is to present an estimate for the electron heating rate in the presence of finite amplitude short-wavelength (in comparison with the ion gyroradius) dispersive shear Alfven (SWDSA) waves that propagate obliquely to the ambient magnetic field direction in the solar corona. Specifically, it is demonstrated that SWDSA waves can significantly contribute to the solar coronal electron heating via collisionless heating involving SWDSA wave-electron interactions.

KW - Solar coronal heating

KW - Dispersive shear Alfvén waves

KW - Electron heating

U2 - 10.1088/0031-8949/90/10/108004

DO - 10.1088/0031-8949/90/10/108004

M3 - Article

SN - 0031-8949

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SP - 1

EP - 4

JO - Physica Scripta

JF - Physica Scripta

IS - 10

M1 - 108004

ER -

Solar coronal electron heating by short-wavelength dispersive shear Alfvén waves

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Keywords

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