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On the Differences in the Ambient Solar Wind Speed Forecasting Caused by Using Synoptic Maps from Different Observatories
We consider the problem of forecasting the solar wind speed using not only well-known magnetic field data sets, such as the Wilcox Solar Observatory ...
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Reduced Microwave Brightness Temperature in a Sunspot Atmosphere Due to Open Magnetic Fields
Motivated by dark coronal lanes in 284 Å extreme-ultraviolet (EUV) observations from the Extreme-ultraviolet Imaging Telescope on board the Solar and...
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The Sun’s Non-Potential Corona over Solar Cycle 24
The global magnetic field in the solar corona is known to contain free magnetic energy and magnetic helicity above that of a current-free (potential)...
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Plasma ignition of solid fuels at thermal power plants. Part 2. 3D modeling of the furnace of a pulverized coal boiler
This paper presents calculation results on plasma ignition and combustion of coal in the furnace of the PK-39-II boiler at Reftinskaya SDPP. For...
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Plasma Upflows Induced by Magnetic Reconnection Above an Eruptive Flux Rope
One of the major discoveries of Hinode’s Extreme-ultraviolet Imaging Spectrometer (EIS) is the presence of upflows at the edges of active regions. As...
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Coherent radio bursts from known M-dwarf planet-host YZ Ceti
Observing magnetic star–planet interactions (SPIs) offers promise for determining the magnetic fields of exoplanets. Models of sub-Alfvénic SPIs...
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Magnetic Properties of Source Regions of CMEs and DH Type II Radio Bursts
The Sun is a dynamic star that exhibits various phenomena, including solar flares, coronal mass ejections (CMEs), and Type II radio bursts. CMEs are...
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Coronal Holes, Footpoint Reconnection, and the Origin of the Slow (and Fast) Solar Wind
The tendency for low-speed solar wind to show greater spatiotemporal variability and different compositional properties from high-speed wind has led...
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Multi-source connectivity as the driver of solar wind variability in the heliosphere
The ambient solar wind that fills the heliosphere originates from multiple sources in the solar corona and is highly structured. It is often...
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Three Eruptions Observed by Remote Sensing Instruments Onboard Solar Orbiter
On February 21 and March 21 – 22, 2021, the Extreme Ultraviolet Imager (EUI) onboard Solar Orbiter observed three prominence eruptions. The eruptions...
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Repeated Type III Burst Groups Associated with a B-Class Flare and a Narrow-Width CME
We have analysed a solar event from 27 September 2021, which included a small GOES B-class flare, a compact and narrow-width CME, and radio type III...
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Analysis of the Evolution of a Multi-Ribbon Flare and Failed Filament Eruption
How filaments form and erupt are topics about which solar researchers have wondered for more than a century and they are still open to debate. We...
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Investigation of the Middle Corona with SWAP and a Data-Driven Non-Potential Coronal Magnetic Field Model
The large field-of-view of the Sun Watcher using Active Pixel System detector and Image Processing (SWAP) instrument onboard the PRoject for Onboard...
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A New Global Nonlinear Force-Free Coronal Magnetic-Field Extrapolation Code Implemented on a Yin–Yang Grid
The solar magnetic field dominates and structures the solar coronal plasma. Detailed insights into the coronal magnetic field are important to...
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Linking the Sun to the Heliosphere Using Composition Data and Modelling
Our understanding of the formation and evolution of the corona and the heliosphere is linked to our capability of properly interpret the data from...
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3D SIP-CESE MHD Model on Triangular Prism Grids
This chapter describes the 3D Solar-Interplanetary space-time Conservation Element and Solution Element (SIP-CESE) MHD model and its application on...
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Searching for a Solar Source of Magnetic-Field Switchbacks in Parker Solar Probe’s First Encounter
Parker Solar Probe observations show ubiquitous magnetic-field reversals closer to the Sun, often referred to as “switchbacks”. The switchbacks have...
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Flattening Index of the Solar Corona and the Sun’s Magnetic Field
The photometric-flattening index of the solar corona was introduced by Ludendorff in the 1930s. It characterizes the white-light corona’s shape as...
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Polarimetric Study of the Solar Corona During the Total Solar Eclipse on July 2, 2019 with a Liquid-Crystal Polarimeter
The results obtained during the total Solar Eclipse on July 2, 2019, in Chile are presented together with the Eclipse K-corona Polarimeter (EKPol)....
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Magnetic Coupling of the Solar Hemispheres During the Solar Cycle
This work is devoted to the study of peculiarities in the magnetic coupling of the solar hemispheres over a solar activity cycle. Two approaches have...
