DRIVING SOLAR SPICULES AND JETS WITH MAGNETOHYDRODYNAMIC TURBULENCE: TESTING A PERSISTENT IDEA
نویسندگان
چکیده
منابع مشابه
Review of the Magnetohydrodynamic Waves and Their Stability in Solar Spicules and X-Ray Jets
One of the most enduring mysteries in solar physics is why the Sun’s outer atmosphere, or corona, is millions of kelvins hotter than its surface. Among suggested theories for coronal heating is one that considers the role of spicules – narrow jets of plasma shooting up from just above the Sun’s surface – in that process (Athay & Holzer, 1982; Athay, 2000). For decades, it was thought that spicu...
متن کاملb-PLANE MAGNETOHYDRODYNAMIC TURBULENCE IN THE SOLAR TACHOCLINE
This Letter discusses the role of a weak toroidal magnetic field in modifying the turbulent transport properties of stably stratified rotating turbulence in the tachocline. A local two-dimensional b-plane model is investigated numerically. In the absence of magnetic fields, nonlinear interactions of Rossby waves lead to the formation of strong mean zonal flows. However, the addition of even a v...
متن کاملMagnetohydrodynamic Jets Andwinds
The theory of magnetically accelerated outtows and jets from accretion disks is reviewed at an introductory level, with special attention to problem areas like the launching conditions of the ow at the disk surface, stability of the magnetic eld, and collimation mechanisms. This text will appear in R. 1.1 Introduction: the case for magnetic acceleration Narrow, high speed outtows (jets) and les...
متن کاملNew theory of plasma magnetic moment may explain features of solar jets and spicules
The current theory is closely examined, and found to have inconsistencies. A new theory is developed with new results for both the energy and magnetic moment of a charged particle. The new theory predicts particle behaviour which is opposite to convention: for example, that a plasma will decelerate as it moves through a decreasing magnetic field. Conversely it will accelerate into an increasing...
متن کاملImbalanced Weak Magnetohydrodynamic Turbulence
WeakMHD turbulence consists of waves that propagate along magnetic field lines, in both directions. When two oppositely directed waves collide, they distort each other, without changing their respective energies. Each wave suffers many collisions before cascading; by contrast, in strong MHD turbulence, waves cascade on the same timescale at which they collide. ‘‘ Imbalance ’’ means that more en...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 2015
ISSN: 1538-4357
DOI: 10.1088/0004-637x/812/1/71