NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Back to Results
Siphon flows in isolated magnetic flux tubes. III - The equilibrium path of the flux-tube archIt is shown how to calculate the equilibrium path of a thin magnetic flux tube in a stratified, nonmagnetic atmosphere when the flux tube contains a steady siphon flow. The equilbrium path of a static thin flux tube in an infinite stratified atmosphere generally takes the form of a symmetric arch of finite width, with the flux tube becoming vertical at either end of the arch. A siphon flow within the flux tube increases the curvature of the arched equilibrium path in order that the net magnetic tension force can balance the inertial force of the flow, which tries to straighten the flux tube. Thus, a siphon flow reduces the width of the arched equilibrium path, with faster flows producing narrower arches. The effect of the siphon flow on the equilibrium path is generally greater for flux tubes of weaker magnetic field strength. Examples of the equilibrium are shown for both isothemal and adiabatic siphon flows in thin flux tubes in an isothermal external atmosphere.
Document ID
19900059057
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
External Source(s)
Authors
Thomas, John H.
(Rochester, University; C. E. Kenneth Mees Observatory, NY, United States)
Montesinos, Benjamin
(Oxford, University United Kingdom)
Date Acquired
August 14, 2013
Publication Date
August 20, 1990
Publication Information
Publication: Astrophysical Journal, Part 1
Volume: 359
ISSN: 0004-637X
Subject Category
Solar Physics
Accession Number
90A46112
Funding Number(s)
CONTRACT_GRANT: NSG-7562
CONTRACT_GRANT: NAG5-934
Distribution Limits
Public
Copyright
Other

Available Downloads

There are no available downloads for this record.
No Preview Available