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Active regions [PDF]

open access: yesSolar Physics, 1970
<p>Published - <a href="/records/3vtm5-qqc59/files/1970SoPh___14__328Z.pdf?download=1">1970SoPh___14__328Z.pdf</a></p>
openaire   +2 more sources

Applications of Image Processing Methods in Solar Coronal Data Analyzes: An Overview [PDF]

open access: yesIranian Journal of Astronomy and Astrophysics
The solar corona, the outermost layer of the Sun's atmosphere, plays a crucial role in understanding solar phenomena and their impact on space weather and terrestrial systems.
Mohsen Javaherian   +3 more
doaj   +1 more source

Measuring Magnetic Field With Atacama Large Millimeter/Submillimeter Array

open access: yesFrontiers in Astronomy and Space Sciences, 2020
The article discusses the use of magnetic bremsstrahlung at short radio wavelengths for measuring solar magnetic fields. The polarization and brightness spectra observed at millimeter wavelengths can be used to deduce the vertical component of the ...
Maria Loukitcheva   +2 more
doaj   +1 more source

Solar activity and its evolution across the corona: recent advances

open access: yesJournal of Space Weather and Space Climate, 2013
Solar magnetism is responsible for the several active phenomena that occur in the solar atmosphere. The consequences of these phenomena on the solar-terrestrial environment and on Space Weather are nowadays clearly recognized, even if not yet fully ...
Zuccarello Francesca   +17 more
doaj   +1 more source

Genomic regions associated with multiple sclerosis are active in B cells. [PDF]

open access: yes, 2012
More than 50 genomic regions have now been shown to influence the risk of multiple sclerosis (MS). However, the mechanisms of action, and the cell types in which these associated variants act at the molecular level remain largely unknown.
Giulio Disanto   +32 more
core   +1 more source

Sudden transitions and grand variations in the solar dynamo, past and future☆

open access: yesJournal of Space Weather and Space Climate, 2012
The solar dynamo is the exotic dance of the sun’s two major magnetic field components, the poloidal and the toroidal, interacting in anti-phase. On the basis of new data on the geomagnetic aa index, we improve our previous forecast of the properties of ...
De Jager Cornelis, Duhau Silvia
doaj   +1 more source

Solar Corona Structures Detection and Segmentation Using Deep Neural Networks: A Survey

open access: yesIEEE Access
Image segmentation and detection of solar corona structures are a critical part of space weather applications. In recent years, deep learning-based techniques have proven to be effective for various automatic solar image processing tasks.
Peter Butka   +4 more
doaj   +1 more source

Muscle-strengthening exercise and sleep quality among a nationally representative sample of 23,635 German adults

open access: yesPreventive Medicine Reports, 2020
Regular physical activity is a key modifiable non-pharmacological treatment to enhance sleep quality, a key predictor of optimal health and wellbeing. Most of the evidence on physical activity and sleep quality is based on studies assessing the effects ...
Jason A. Bennie, Susanne Tittlbach
doaj   +1 more source

What Are the Causes of Super Activity of Solar Active Regions?

open access: yesThe Astrophysical Journal, 2023
Flare productivity varies among solar active regions (ARs). This study analyzed 20 ARs of contrasting sunspot areas and flare productivities to understand the super flare productivity of certain ARs.
Suman K. Dhakal, Jie Zhang
doaj   +1 more source

Intriguing Plasma Composition Pattern in a Solar Active Region: A Result of Nonresonant Alfvén Waves?

open access: yesThe Astrophysical Journal, 2023
The plasma composition of the solar corona is different from that of the solar photosphere. Elements that have a low first ionization potential (FIP) are preferentially transported to the corona and therefore show enhanced abundances in the corona ...
Teodora Mihailescu   +8 more
doaj   +1 more source

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