dc.contributor.author |
Hasan, S. S |
|
dc.contributor.author |
Venkatakrishnan, P |
|
dc.date.accessioned |
2008-12-18T14:12:44Z |
|
dc.date.available |
2008-12-18T14:12:44Z |
|
dc.date.issued |
1981-09 |
|
dc.identifier.citation |
Solar Physics, Vol. 73, No. 1, pp. 45 - 57 |
en |
dc.identifier.issn |
0038-0938 |
|
dc.identifier.uri |
http://hdl.handle.net/2248/4109 |
|
dc.description.abstract |
A time dependent model for the flow of gas in a spicule is studied. In this model, the flow occurs in a magnetic flux sheath. Starting from hydrostatic equilibrium, the flux sheath is allowed to collapse normal to itself. The collapse induces a flow of gas along the magnetic field and this flow is identified as a spicule. A variety of sheath geometries and velocity patterns for the normal flow have been studied. It is observed that a large curvature in the field geometry and a large initial value for the normal flow are necessary to achieve spicule-like velocities. The duration for which a large velocity of normal flow is required is much shorter than the average lifetime of a spicule. It is proposed that the initial rapid collapse occurs during an 'impulsive spicule' phase and it is the subsequent gradual relaxation of the flow which is observed as a spicule. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Kluwer Academic Publishers |
en |
dc.relation.uri |
http://adsabs.harvard.edu/abs/1981SoPh...73...45H |
en |
dc.relation.uri |
http://dx.doi.org/10.1007/BF00153143 |
en |
dc.subject |
Magnetohydrodynamic Flow |
en |
dc.subject |
Magnetoplasmadynamics |
en |
dc.subject |
Solar Magnetic Field |
en |
dc.subject |
Solar Prominences |
en |
dc.subject |
Spicules |
en |
dc.subject |
Stellar Models |
en |
dc.subject |
Compressible Flow |
en |
dc.subject |
Flow Velocity |
en |
dc.subject |
Magnetic Field Configurations |
en |
dc.subject |
Magnetic Flux |
en |
dc.subject |
Plasma Sheaths |
en |
dc.subject |
Pressure Distribution |
en |
dc.subject |
Time Dependence |
en |
dc.subject |
Two Dimensional Flow |
en |
dc.subject |
Velocity Distribution |
en |
dc.title |
A time dependent model for spicule flow |
en |
dc.type |
Article |
en |