Results 31 to 40 of about 1,433,455 (143)
Solar activity and its evolution across the corona: recent advances
Journal 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
Sudden transitions and grand variations in the solar dynamo, past and future☆
Journal 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
Parameter Study of Geoeffective Active Regions
AtmosphereGeomagnetic storms (GSs) are major disturbances in the terrestrial atmosphere caused by the reconnection process between the incoming plasma ejecta in the solar wind and the planetary magnetosphere.
Rositsa Miteva +3 more
doaj +1 more source
Solar Corona Structures Detection and Segmentation Using Deep Neural Networks: A Survey
IEEE AccessImage 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
Preventive 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?
The 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
The 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
BMC Public Health, 2020 Background Recent evidence suggests that work-related physical activity may not have the same mental health benefits as leisure-time physical activity.
Rhiannon Lee White +3 more
doaj +1 more source
Information Horizon of Solar Active Regions
The Astrophysical Journal Letters, 2023 Information theory is used to characterize the solar active region periodicities and memories from the Carrington map images 1974–2021. The active regions typically evolve and move from one map to the next.
Jay R. Johnson +3 more
doaj +1 more source
Physics of outflows near solar active regions [PDF]
Annales Geophysicae, 2015 Hinode/EIS observations have revealed outflows near active regions which remain unexplained. An outflow region observed by the EUV Imaging Spectrometer (EIS) that appears slightly redshifted at low temperatures and blueshifted at higher temperatures ...
D. J. Price, Y. Taroyan
doaj +1 more source