The heliospheric current sheet results from the influence of the Sun's rotating magnetic field on the plasma in the interplanetary medium[1]The evolution of a current sheet during a solar flare.[2]
A current sheet is an electric current that is confined to a surface, rather than being spread through a volume of space. Current sheets feature in magnetohydrodynamics (MHD), the study of the behavior of electrically conductive fluids: if there is an electric current through part of the volume of such a fluid, magnetic forces tend to expel it from the fluid, compressing the current into thin layers that pass through the volume.
The largest occurring current sheet in the Solar System is the so-called Heliospheric current sheet, which is about 10,000 km thick, and extends from the Sun and out beyond the orbit of Pluto.
In astrophysical plasmas such as the solar corona, current sheets theoretically might have an aspect ratio (breadth divided by thickness) as high as 100,000:1.[3] By contrast, the pages of most books have an aspect ratio close to 2000:1. Because current sheets are so thin in comparison to their size, they are often treated as if they have zero thickness; this is a result of the simplifying assumptions of ideal MHD. In reality, no current sheet may be infinitely thin because that would require infinitely fast motion of the charge carriers whose motion causes the current.
Current sheets in plasmas store energy by increasing the energy density of the magnetic field. Many plasma instabilities arise near strong current sheets, which are prone to collapse, causing magnetic reconnection and rapidly releasing the stored energy.[4] This process is the cause of solar flares[5] and is one reason for the difficulty of magnetic confinement fusion, which requires strong electric currents in a hot plasma.
^"Artist's Conception of the Heliospheric Current Sheet" Wilcox Solar Observatory, Stanford University
^Zhu, Chunming; Liu, Rui; Alexander, David; McAteer, R. T. James (2016-04-19). "Observation of the Evolution of a Current Sheet in a Solar Flare". The Astrophysical Journal. 821 (2): L29. arXiv:1603.07062. Bibcode:2016ApJ...821L..29Z. doi:10.3847/2041-8205/821/2/L29. ISSN 2041-8213. S2CID 119188103.
^Biskamp, Dieter (1997) Nonlinear Magnetohydrodynamics Cambridge University Press, Cambridge, England, page 130, ISBN 0-521-59918-0
^Biskamp, Dieter (May 1986) "Magnetic reconnection via current sheets" Physics of Fluids 29: pp. 1520-1531, doi:10.1063/1.865670
^Low, B. C. and Wolfson, R. (1988) "Spontaneous formation of electric current sheets and the origin of solar flares" Astrophysical Journal 324(11): pp. 574-581
The heliospheric currentsheet, or interplanetary currentsheet, is a surface separating regions of the heliosphere where the interplanetary magnetic field...
A currentsheet is an electric current that is confined to a surface, rather than being spread through a volume of space. Currentsheets feature in magnetohydrodynamics...
balance sheet lists current assets such as cash in checking accounts and savings accounts, long-term assets such as common stock and real estate, current liabilities...
probe measurement) or indirectly by using a non-contact eddy-current-based testing device. Sheet resistance is invariable under scaling of the film contact...
counterclockwise flow of electric current (I, red), in the sheet. This is the eddy current. In the part of the sheet under the trailing edge of the magnet...
midnight sector. The sheet on the high latitude side of the auroral zone is referred to as the Region 1 currentsheet and the sheet on the low latitude...
000 km2 (19,000 sq mi). The only current ice sheets are the Antarctic ice sheet and the Greenland ice sheet. Ice sheets are bigger than ice shelves or alpine...
producing geomagnetic storms in the Earth's magnetosphere. The heliospheric currentsheet is a ripple in the heliosphere created by the rotating magnetic field...
the inflow regions (i.e., along the currentsheet) to that of the outflow regions (i.e., threading the currentsheet). The rate of this magnetic flux transfer...
Sheet metal is metal formed into thin, flat pieces, usually by an industrial process. Thicknesses can vary significantly; extremely thin sheets are considered...
thin currentsheet is formed in the solar wind. At great distances, the rotation of the Sun twists the dipolar magnetic field and corresponding current sheet...
brought together to form a currentsheet above the PIL. Fast magnetic reconnection can be excited along the currentsheet by microscopic instabilities...
McAteer, R. T. James (19 April 2016). "Observation of the Evolution of a CurrentSheet in a Solar Flare". The Astrophysical Journal. 821 (2): L29. arXiv:1603...
launched a beta release spreadsheet web application, this is currently known as Google Sheets and one of the applications provided in Google Drive. A spreadsheet...
largest stable structure within the heliosphere is the heliospheric currentsheet, a spiral form created by the actions of the Sun's rotating magnetic...
Cascading Style Sheets (CSS) is a style sheet language used for specifying the presentation and styling of a document written in a markup language such...
in the solar wind, in the solar atmosphere, and in the heliospheric currentsheet. Plasmoids produced in the laboratory include field-reversed configurations...
currentsheet, we can compute the magnetic field by integrating the contributions from all current elements within the sheet. For a rectangular sheet...
A safety data sheet (SDS), material safety data sheet (MSDS), or product safety data sheet (PSDS) is a document that lists information relating to occupational...
an individual. In finance, a tear sheet provides a one-page summary of a company or portfolio, containing current and historic information on the company...
MHD systems most of the electric current is compressed into thin nearly-two-dimensional ribbons termed currentsheets. These can divide the fluid into...
(right side) the magnetic field through the sheet is decreasing, inducing a clockwise eddy current in the sheet. Another way to understand the action is...
media related to Sheet vinyl flooring. Sheet vinyl flooring is vinyl flooring that comes in large, continuous, flexible sheets. A vinyl sheet floor is completely...
The generated graphic component can either be embedded within the currentsheet or added as a separate object. These displays are dynamically updated...
electric current along the magnetic field lines (a Birkeland current). Since the electric field points in the same direction as the current, there is...
with other currents influence a current's direction and strength. Ocean currents are primarily horizontal water movements. An ocean current flows for great...
The Laurentide ice sheet was a massive sheet of ice that covered millions of square miles, including most of Canada and a large portion of the Northern...
business and payable within a normal period would be current liabilities. Amounts listed on a balance sheet as accounts payable represent all bills payable...
Global Information