Siphon flows in isolated magnetic flux tubes. IV - Critical flows with standing tube shocks

Journal Article · Mon Jul 01 00:00:00 EDT 1991 · Astrophysical Journal; (United States)

DOI:https://doi.org/10.1086/170198· OSTI ID:5318403

Thomas, J H; Montesinos, B ^[1]

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1. Rochester, University (USA) Mees Observatory, NY (USA) Oxford, University (England)

Critical siphon flows in arched, isolated magnetic flux tubes are studied within the thin flux tube approximation, with a view toward applications to intense magnetic flux concentrations in the solar photosphere. The results of calculations of the strength and position of the standing tube shock in the supercritical downstream branch of a critical siphon flow are presented, as are calculations of the flow variables all along the flux tube and the equilibrium path of the flux tube in the surrounding atmosphere. It is suggested that arched magnetic flux tubes, with magnetic field strength increased by a siphon flow, may be associated with some of the intense, discrete magnetic elements observed in the solar photosphere. 37 refs.

• OSTI ID: 5318403
• Journal Information: Astrophysical Journal; (United States), Vol. 375; ISSN 0004-637X
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
PHOTOSPHERE
MAGNETIC FLUX
CRITICAL FLOW
MAGNETIC FIELDS
PLASMA WAVES
SHOCK WAVES
SOLAR ATMOSPHERE
STANDING WAVES
SUN
SUNSPOTS
ATMOSPHERES
FLUID FLOW
MAIN SEQUENCE STARS
SOLAR ACTIVITY
STARS
STARSPOTS
STELLAR ACTIVITY
640104* - Astrophysics & Cosmology- Solar Phenomena