Results 1 to 10 of about 1,089,572 (146)
Living Reviews in Solar Physics, 2015 Polar plumes are thin long ray-like structures that project beyond the limb of the Sun polar regions, maintaining their identity over distances of several solar radii.
Giannina Poletto
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Prospective Implications of Extreme-ultraviolet Coronal Plumes for Magnetic-network Genesis of Coronal Heating, Coronal-hole Solar Wind, and Solar-wind Magnetic Field Switchbacks [PDF]
The Astrophysical Journal Letters, 2023 We propose that coronal heating in EUV coronal plumes is weaker, not stronger, than in adjacent nonplume coronal magnetic funnels. This expectation stems from (i) the observation that an EUV plume is born as the magnetic flux at the foot of the plume’s ...
Ronald L. Moore +3 more
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High-resolution Observations of Plume Footpoints in a Solar Coronal Hole
The Astrophysical Journal, 2023 Plumes are bright structures in coronal holes extending from the solar surface into the corona and are considered as a possible source of the solar wind. Plumes are thought to be rooted in strong unipolar photospheric flux patches (network/plage region).
Kyung-Suk Cho +9 more
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The Astrophysical Journal, 2023 We investigate the origin of mesoscale structures in the solar wind called microstreams, defined as enhancements in the solar wind speed and temperature that last several hours.
Bahaeddine Gannouni +2 more
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The Fine-scale Structure of Polar Coronal Holes
The Astrophysical Journal, 2023 Coronal holes are thought to be composed of relatively broad columnar structures known as plumes. Here, we demonstrate that the plumes (and interplumes) in polar coronal holes are composed of fine-scale filamentary structure, with average scales of 2″–10″
R. J. Morton, R. Cunningham
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Solar stereoscopy – where are we and what developments do we require to progress? [PDF]
Annales Geophysicae, 2009 Observations from the two STEREO-spacecraft give us for the first time the possibility to use stereoscopic methods to reconstruct the 3-D solar corona. Classical stereoscopy works best for solid objects with clear edges.
T. Wiegelmann +3 more
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New Evidence on the Origin of Solar Wind Microstreams/Switchbacks
The Astrophysical Journal Letters, 2023 Microstreams are fluctuations in the solar wind speed and density associated with polarity-reversing folds in the magnetic field (also denoted switchbacks).
Pankaj Kumar +6 more
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Thermodynamic Evolution of Plumes
The Astrophysical JournalPlumes are considered to play an important role in the origin of the solar wind. However, an understanding of their thermodynamic evolution is not complete. Here, we perform a detailed study of a plume inside a coronal hole throughout its lifetime, using
Biswanath Malaker +2 more
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Propagating Kink Waves in Chromospheric Jetlike Structures and Coronal Plumelets
The Astrophysical JournalCoronal plumes and chromospheric jetlike structures are believed to be highly dynamic. We report the first direct observations of a propagating kink wave in a chromospheric jetlike structure and its associated plumelet structure in the upper corona of ...
Youqian Qi +7 more
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Estimating the Poynting Flux of Alfvénic Waves in Polar Coronal Holes across Solar Cycle 24
The Astrophysical JournalAlfvénic waves are known to be prevalent throughout the corona and solar wind. Determining the Poynting flux supplied by the waves is required for constraining their role in plasma heating and acceleration, as well as providing a constraint for Alfvén ...
R. J. Morton +3 more
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