Results 111 to 120 of about 2,286 (221)
Spectroscopic Study of Heating Distributions and Mechanisms Using Hinode/EIS
The Astrophysical JournalHeating distributions along coronal loops are obtained from spectroscopic data with the Hinode/EUV Imaging Spectrometer. The loop half-lengths L _half are in the range of 24–107 Mm for our analysis of 18 loops.
Shun Ishigami +2 more
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The Astrophysical Journal LettersPlasma- β is an important fundamental physical quantity in solar plasma physics, which determines the dominating process in the solar atmosphere, i.e., magnetic or thermodynamic processes. Here, for the first time, we provide variations of magnetic field
Ananya Rawat +4 more
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, 2011 Coronal mass ejections (CMEs) are large-scale explosions on the Sun that expel plasma and magnetic field into the heliosphere. The interplanetary counterparts of CMEs, termed interplanetary CMEs (ICMEs), are often directly observed by spacecraft ...
Steed, K.
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On the Connection of Coronal Loop Plasma with the Ambient Magnetic Field
The Astrophysical Journal LettersSolar coronal loops are magnetically confined plasma structures whose properties are closely linked to the ambient magnetic field. Using 3D magnetohydrodynamic simulations of kink-unstable coronal flux tubes, we investigate how the intensity of the ...
F. Reale, G. Cozzo, P. Pagano, P. Testa
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The investigation of quasi-separatrix layers in solar magnetic fields
, 2011 The structure of the magnetic field is often an important factor in many energetic processes in the solar corona. To determine the topology of the magnetic field features such as null points, separatrix surfaces, and separators must be found.
Restante, Anna Lisa
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Multiple Episodes of Remote Brightenings Driven by a Coronal Extreme-ultraviolet Jet on the Sun
The Astrophysical JournalRemote brightening (RB) is compact brightening at footpoints of magnetic loops, which are remotely connecting to and confining an eruption in the solar atmosphere.
Chao Zhang +10 more
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Solar flux emergence : a three-dimensional numerical study
, 2008 Flux is continually emerging on the Sun, making its way from the solar interior up into the atmosphere. Emergence occurs on small-scales in the quiet Sun where magnetic fragments emerge, interact and cancel and on large-scales in active regions where ...
Murray, Michelle J.
core
Spectroscopic Observations of Coronal Rain Formation and Evolution Following an X2 Solar Flare
The Astrophysical JournalA significant impediment to solving the coronal heating problem is that we currently only observe active region loops in their cooling phase. Previous studies showed that the evolution of cooling loop densities and apex temperatures is insensitive to the
David H. Brooks +4 more
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Spatiotemporal Low First Ionization Potential Abundance: A Catalyst for Coronal Condensation
The Astrophysical JournalRadiative losses play a critical role in the cooling of plasmas. When chromospheric plasma is sufficiently heated, it can flow into coronal loops, which subsequently cool down due to radiation. From observations, we infer that this cooling does not occur
Luke Fushimi Benavitz +3 more
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Astronomy & AstrophysicsAims. Solar type II radio bursts are commonly attributed to coronal shocks driven by coronal mass ejections (CMEs). However, some metric type II bursts have occasionally been reported to occur in the absence of a CME and to be associated with weak solar ...
Cui Yingli +14 more
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