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Models of dynamic coronal loops
Solar Physics, 2000This paper reviews the basic ideas underlying one-dimensional fluid dynamic models of coronal loops and presents some of their most recent applications. These models are an important theoretical support to explore the new scenario provided by the data of Yohkoh, SOHO, and TRACE, and are useful to interpret observations, when supplemented by appropriate
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Nature, 1981
The solar corona is now recognized as a highly inhomogeneous plasma that comprises a complex network of individual arch and loop-like structures1. This has led to the recent idea that the isolated ‘coronal loop’ may form a basic building block of quiescent solar and stellar atmospheres2,3.
I. J. D. Craig, A. N. McClymont
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The solar corona is now recognized as a highly inhomogeneous plasma that comprises a complex network of individual arch and loop-like structures1. This has led to the recent idea that the isolated ‘coronal loop’ may form a basic building block of quiescent solar and stellar atmospheres2,3.
I. J. D. Craig, A. N. McClymont
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Modeling of Dynamic Evolution of Coronal Loops
Space Science Reviews, 1994Parameters of expanding magnetic loops and arches and of mass flows generated by them in the corona have been computed in a 1D two-fluid approximation. Two possible trigger mechanisms of the coronal transients have been considered: (i) sudden increase of the background magnetic field strength, and (ii) heating and compression plasma inside these ...
T. V. Stepanova, A. G. Kosovichev
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The structure of coronal loops
Solar Physics, 1978With the advent of space telescopes, coronal magnetic loops, both within and outside active regions, are being observed with renewed interest. This paper is an attempt to outline some general physical considerations pertinent to such loops, as a prelude to more sophisticated modelling.
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A Coronal Loop Automatic Detection Method
SymmetryCoronal loops are bright, filamentary structures formed by thermal plasmas constrained by the sun’s magnetic field. Studying coronal loops provides insights into magnetic fields and their role in coronal heating processes. We propose a new automatic coronal loop detection method to optimize the problem of existing algorithms in detecting low-intensity ...
Zhenhong Shang, Runxin Li, Ziqi He
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Nature, 1987
The existence of the solar wind requires a net outflow of material at all depths in the solar atmosphere. Thus, the observation of a prevalent downflow at temperatures near 105 K1,2 presents a considerable challenge. Two classes of flow models have been suggested, each involving flow along closed magnetic-field lines that extend above the chromosphere ...
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The existence of the solar wind requires a net outflow of material at all depths in the solar atmosphere. Thus, the observation of a prevalent downflow at temperatures near 105 K1,2 presents a considerable challenge. Two classes of flow models have been suggested, each involving flow along closed magnetic-field lines that extend above the chromosphere ...
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A large coronal loop in the Algol system
Nature, 2010The close binary Algol system contains a radio-bright KIV subgiant star in a very close (0.062 astronomical units) and rapid (2.86 day) orbit with a main sequence B8 star. Because the rotation periods of the two stars are tidally locked to the orbital period, the rapid rotation drives a magnetic dynamo.
Peterson, Wiliam M. +3 more
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Solar Coronal Loops and Coronal Heating Models
AIP Conference Proceedings, 2005Ever since it was realized, some sixty five years ago, that the solar corona is three orders of magnitude hotter than the underlying photosphere, scientists have puzzled over the reason for these extreme conditions. A number of plausible ideas have been put forward, including the dissipation of magnetohydrodynamic (MHD) waves and the dissipation of ...
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1980
In the past few years it has been realised that loop structures are an important feature of the solar corona, Presumably, these structures outline the local magnetic field and in this thesis some theoretical aspects of solar coronal loops are considered.
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In the past few years it has been realised that loop structures are an important feature of the solar corona, Presumably, these structures outline the local magnetic field and in this thesis some theoretical aspects of solar coronal loops are considered.
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Theory of radio pulsations in coronal loops
Solar Physics, 1987‘Pulsations’ include a wide range of phenomena from strictly sinusoidal oscillations up to quasiperiodic fine structures, observed in the radio, microwave and X-ray frequency range. The various versions of pulsation models are reviewed and classified in three groups according to their driver mechanisms: (1) Magnetic flux tube oscillations (the ...
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