Results 21 to 30 of about 2,843,165 (290)
Heartbeat of the sun from principal component analysis and prediction of solar activity on a millenium timescale [PDF]
, 2015 We derive two principal components (PCs) of temporal magnetic field variations over the solar cycles 21-24 from full disk magnetograms covering about 39% of data variance, with σ = 0.67. These PCs are attributed to two main magnetic waves travelling from
Shepherd, Simon J. +10 more
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The New Composite Solar Flare Index from Solar Cycle 17 to Cycle 24 (1937 – 2020)
, 2022 The chromosphere is a highly dynamic outer plasma layer of the Sun. Its physical processes accounting for the variability are poorly understood. We reconstructed the solar chromospheric flare index (SFI) to study the solar chromospheric variability from ...
Acosta Jara, Jose Nemesio
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International Journal of Geophysics, 2012 We analyse the variability of foF2 at two West Africa equatorial ionization anomaly stations (Ouagadougou and Dakar) during three solar cycles (from cycle 20 to cycle 22), that is, from 1966 to 1998 for Ouagadougou and from 1971 to 1997 for Dakar.
Frédéric Ouattara +2 more
doaj +1 more source
The effect of colour on the thermal performance of building integrated solar collectors [PDF]
, 2010 The use of solar collectors with coloured absorbers for water heating is an area of particular interest when considering their integration with buildings.
Carson, James K. +2 more
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Earth, Planets and Space, 2019 In order to statistically investigate the relationship between the low-latitude coronal holes (CHs), the solar wind speed, and the geomagnetic activity in solar cycles 23 (1996–2008) and 24 (2009–2016), we conducted a superposed epoch analysis of the ...
Yumi Nakagawa +2 more
doaj +1 more source
Solar Cycle 25 Prediction Using N-BEATS
The Astrophysical Journal, 2023 Solar activities lead to Sun variation with an 11 yr periodicity. The periodic variation affects space weather and heliophysics research. So it is important to accurately predict solar cycle variations. In this paper, we predicted the ongoing Solar Cycle
Xu Su +4 more
doaj +1 more source
First Type III Solar Radio Bursts of Solar Cycle 25 [PDF]
, 2022 The minimum of the previous solar cycle, Solar Cycle 24, occurred in December 2019, which also marked the start of the new Solar Cycle 25. The first radio bursts of the new solar cycle were observed in the spring season 2020. In this work we will present
Tornikoski Merja +2 more
core +1 more source
Geomagnetic storms driven by ICME- and CIR-dominated solar wind. [PDF]
, 2006 The interaction of the solar wind and the Earth's magnetosphere is complex and the phenomenology of the interaction is very different for solar wind dominated by interplanetary coronal mass ejections (ICMEs) compared to solar wind dominated by corotating
Liemohn, M. W. +8 more
core +5 more sources
Energies, 2022 This paper investigates and compares several highly efficient thermodynamic cycles that are suitable for coupling with particle-in-tube fluidized-bed solar receiver technology.
Miguel Angel Reyes-Belmonte +1 more
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Variation of Solar, Interplanetary and Geomagnetic Parameters during Solar Cycles 21-24 [PDF]
Journal of Astronomy and Space Sciences, 2013 The length of solar cycle 23 has been prolonged up to about 13 years. Many studies have speculated that the solar cycle 23/24 minimum will indicate the onset of a grand minimum of solar activity, such as the Maunder Minimum.
Suyeon Oh, Bogyeong Kim
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