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Energetics of Solar Coronal Holes
1991We examine the energetics of a solar coronal hole in the framework of magnetohydrodynamics (MHD). Given typical values of the observed parameters, it is estimated that the Poynting flux maintained by the solar rotation and a trailing magnetic field is potentially capable of driving and heating a wind stream in a coronal hole region.
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Space Science Reviews, 1979
Models of plasma flow in a coronal hole fall naturally into four classes. These are: (i) radial flow on a streamline along which the divergence is assumed to vary differently than as the square of the radial distance from the Sun; (ii) global flow along streamlines determined in some independent manner; (iii) empirical models originating in, or based ...
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Models of plasma flow in a coronal hole fall naturally into four classes. These are: (i) radial flow on a streamline along which the divergence is assumed to vary differently than as the square of the radial distance from the Sun; (ii) global flow along streamlines determined in some independent manner; (iii) empirical models originating in, or based ...
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Energetics of coronal hole expansion
Journal of Geophysical Research: Space Physics, 1981Based on the assumption of the undamped propagation of Alfven waves between 2 and 5 RS, the possible range of Alfven wave energy flux density at the base of a polar coronal hole has been deduced. It is concluded that extended heating above 2 RS is needed to maintain the temperature maximum above 2 RS and to supply energy for the formation of high‐speed
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2009
The fast solar wind originates from polar coronal holes. Recent observations from SoHO suggest that the solar wind is flowing from funnel-shaped magnetic fields anchored in the lanes of the magnetic network at the solar surface. Using the spectroscopic diagnostic capability of SUMER on SoHO and of EIS on HINODE, we study waves in polar coronal holes ...
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The fast solar wind originates from polar coronal holes. Recent observations from SoHO suggest that the solar wind is flowing from funnel-shaped magnetic fields anchored in the lanes of the magnetic network at the solar surface. Using the spectroscopic diagnostic capability of SUMER on SoHO and of EIS on HINODE, we study waves in polar coronal holes ...
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Models for Solar Coronal Holes.
1978Abstract : This report summarizes several investigations of coronal holes and quiet regions. Temperature-density models for those regions have been derived from EUV observations. It is found that the coronal temperature, density, and temperature gradient are lower in coronal holes than in quiet regions.
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Picoflare jets power the solar wind emerging from a coronal hole on the Sun
Science, 2023Lakshmi Pradeep Chitta +2 more
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Dynamics of coronal hole regions
Solar Physics, 1976RogerA. Kopp, ThomasE. Holzer
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Small-scale filament eruptions as the driver of X-ray jets in solar coronal holes
Nature, 2015Alphonse C Sterling, Ronald L Moore
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Morphology, dynamics and plasma parameters of plumes and inter-plume regions in solar coronal holes
Astronomy and Astrophysics Review, 2011Frédéric Auchère +2 more
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