Results 31 to 40 of about 1,498,055 (202)
The Astrophysical Journal, 2023 The EUI instrument on the Solar Orbiter spacecraft has obtained the most stable, high-resolution images of the solar corona from its orbit with a perihelion near 0.4 au.
P. G. Judge
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Electron and proton heating by solar wind turbulence [PDF]
, 2009 Previous formulations of heating and transport associated with strong magnetohydrodynamic (MHD) turbulence are generalized to incorporate separate internal energy equations for electrons and protons. Electron heat conduction is included.
Matthaeus, William H. +9 more
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Multifrequency Microwave Imaging of Weak Transients from the Quiet Solar Corona
The Astrophysical Journal, 2023 Understanding the dynamics of the quiet solar corona is important for answering key questions including the coronal heating problem. Multiple studies have suggested small-scale magnetic-reconnection events may play a crucial role.
Surajit Mondal, Bin Chen, Sijie Yu
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Topological structure of the magnetic solar corona [PDF]
, 2007 The solar corona is a highly complex and active plasma environment, containing many exotic phenomena such as solar flares, coronal mass ejections, prominences, coronal loops, and bright points.
Maclean, Rhona Claire
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Seismological constraints on the solar coronal heating function [PDF]
Astronomy & Astrophysics, 2020 Aims. The hot solar corona exists because of the balance between radiative and conductive cooling and some counteracting heating mechanism that remains one of the major puzzles in solar physics. Methods. The coronal thermal equilibrium is perturbed by magnetoacoustic waves, which are abundantly present in the corona, causing a misbalance between the ...
D. Y. Kolotkov +2 more
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Photospheric magnetic vortex structures [PDF]
, 2011 Using direct numerical magneto-hydrodynamic (MHD) simulations, we demonstrate the evidence of two physically different types of vortex motions in the solar photosphere.
Shelyag, S. +14 more
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The Astrophysical Journal, 1991 It has been shown that the coronal hole, and the associated high-speed stream in the solar wind, are powered by a heat input of the order of 500,000 ergs/sq cm s, with most of the heat injected in the first 1-2 solar radii, and perhaps 100,000 ergs/sq cm s introduced at distances of several solar radii to provide the high speed of the issuing solar ...
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Coronal Heating and the Solar Wind Acceleration [PDF]
Symposium - International Astronomical Union, 2001 We propose a coronal heating theory based on the magnetic twisting, which inevitably produces charge imbalance. The resulting electric field creates supra-thermal electron beams. Beams are then thermalized by classical collisions. The dissipation rate is enough to heat the corona and to accelerate the solar wind.
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A new paradigm for solar coronal heating
EPL (Europhysics Letters), 2009 The solar coronal heating problem refers to the question why the temperature of the Sun's corona is more than two orders of magnitude higher than that of its surface. Almost 70 years after the discovery, this puzzle is still one of the major challenges in astrophysics.
Vranjes, Jovo, Poedts, Stefaan
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Propagation and damping of MHD waves in the solar atmosphere [PDF]
, 2015 Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
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