Author: Michael Bareford and Philippa Browning are from the Jodrell Bank Centre for Astrophysics, University of Manchester and Ronald Van der Linden is from the Royal Observatory of Belgium.
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The million-degree temperatures observed in the outer atmosphere of the Sun are considerably hotter than that of the photosphere (T ≈ 5800 K).… continue to the full article
Authors: Peter Gallagher, Pietro Zucca, Eoin Carley and Joe McCauley are members of the Astrophysics Research Group at Trinity College Dublin, Ireland.
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Coronal mass ejections (CMEs) are spectacular eruptions of plasma and magnetic field from the surface of the Sun into the heliosphere.… continue to the full article
Authors: Sarah Matthews, Sergei Zharkov & Valentina Zharkova
UCL Mullard Space Science Lab. and University of Bradford
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The quest to understand the energy release and transport processes in solar flares is one that many solar physicists have taken up over the years, and since the advent of routine space-based observations we have learned huge amounts about the processes that might be operating in the upper atmosphere.… continue to the full article
Author: Richard Morton and Robert Erdélyi are from the Solar WAve Theory (SWAT) group, Solar Physics and Space Plasma Research Centre (SP²RC) at The University of Sheffield.
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The corona is the outermost layer of the Sun’s atmosphere and is dominated by giant, magnetic structures known as coronal loops which rise up to 40,000km above the solar surface.… continue to the full article
Author: Claire Foullon is a Senior Research Fellow in the Centre for Fusion, Space & Astrophysics, Physics Department at the University of Warwick.
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Flows and instabilities play a major role in the dynamics of magnetised plasmas.… continue to the full article
Authors: M. Mathioudakis, P. Crockett, D. Jess, S. Shelyag, F. Keenan, D. Christian are from Astrophysics Research Center at Queen’s University Belfast.
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The dominant pattern of the quiet solar photosphere is granulation, the top of the small-scale convection cells with diameters of 1,000 – 2,000 km and lifetimes of a few minutes.… continue to the full article
Author: David Pascoe is a Research Fellow at the School of Mathematics and Statistics at the University of St Andrews.
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Observations reveal that oscillations are ubiquitous in the solar corona. Transverse velocity perturbations with periods of about 5 minutes propagate upwards through the solar atmosphere and are damped over length scales of a few hundred megametres [1].… continue to the full article
James McLaughlin is a lecturer in Applied Mathematics at Northumbria University.
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Magnetohydrodynamic (MHD) wave behaviour in the neighbourhood of coronal null points is a fundamental plasma process. As well as being fascinating in its own right, results so far have also lead to critical insights into reconnection, mode-coupling, quasi-periodic pulsations and phase-mixing.… continue to the full article
Author: Brendan O’Dwyer is a PhD student at the DAMTP, University of Cambridge.
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The Atmospheric Imaging Assembly (AIA) on the Solar Dynamics Observatory (SDO) is a set of four telescopes designed to image the solar atmosphere in a variety of extreme ultraviolet (EUV), ultraviolet and visible-light wavelength bands.… continue to the full article
by Jingnan Guo, Lyndsay Fletcher, Siming Liu & Eduard Kontar from the School of Physics and Astronomy, University of Glasgow
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When the RHESSI satellite [1] observes a solar flare at different energies, some patterns become clear.… continue to the full article
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