Long- and Mid-Term Variations of the Soft X-ray Flare Type in Solar Cycles
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DOI: 10.1007/s11207-017-1169-1
Abstract: Using data from the Geostationary Operational Environmental Satellites (GOES) spacecraft in the 1 – 8 Å wavelength range for Solar Cycles 23, 24, and part of Cycles 21 and 22, we compare mean temporal parameters (rise and decay times, and duration)… read more here.
Keywords: flare type; class; class flares; cycle ... See more keywords
Will Solar Cycles 25 and 26 Be Weaker than Cycle 24?
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DOI: 10.1007/s11207-017-1197-x
Abstract: The study of variations in solar activity is important for understanding the underlying mechanism of solar activity and for predicting the level of activity in view of the activity impact on space weather and global… read more here.
Keywords: upcoming gleissberg; cycle; weaker cycle; activity ... See more keywords
Study of Geomagnetic Storms and Solar and Interplanetary Parameters for Solar Cycles 22 and 24
Sign Up to like & getrecommendations! Published in 2018 at "Solar Physics"
DOI: 10.1007/s11207-018-1345-y
Abstract: The aim of this paper is to investigate the association of geomagnetic storms with the component of the interplanetary magnetic field (IMF) perpendicular to the ecliptic (Bz$Bz$), the solar wind speed (V$V$), the product of… read more here.
Keywords: dst; geomagnetic storms; wind speed; study geomagnetic ... See more keywords
Solar-Cycle Characteristics in Kodaikanal Sunspot Area: North–South Asymmetry, Phase Distribution and Gnevyshev Gap
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DOI: 10.1007/s11207-020-01744-7
Abstract: Solar activity is asymmetric in the two hemispheres in almost all cycles. This asymmetry is observed both in cycle amplitude and period. We have used about 90 years of sunspot-area data from the Kodaikanal Solar Observatory… read more here.
Keywords: north south; cycle; south asymmetry; solar cycles ... See more keywords
Periodic Variation of Anomalous Cosmic Ray Oxygen During Solar Cycles 23 and 24
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DOI: 10.1007/s11207-024-02420-w
Abstract: We investigate the evolution of the Rieger periodicity at 152 – 156 days, the 27-day synodic rotation period as well as the 13.5- and 9-day harmonic periodicities in anomalous cosmic ray (ACR) oxygen (O) fluxes at the… read more here.
Keywords: cosmic ray; oxygen; acr oxygen; anomalous cosmic ... See more keywords
N-S Asymmetry and Periodicity of Solar Activity from Solar Cycles 21 – 24
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DOI: 10.1007/s11207-025-02442-y
Abstract: Continuous wavelet power spectrum approach has been utilized to examine the short- and long-term fluctuations of solar plage area (PA), solar flare index (SFI), and sunspot numbers (SSNs) from 1976 to 2022. Based on the… read more here.
Keywords: periods years; group; wavelet; asymmetry periodicity ... See more keywords
A comparative study of geomagnetic storms for solar cycles 23 and 24
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-018-9538-1
Abstract: The aim of this paper is to investigate the association of the geomagnetic storms with the magnitude of interplanetary magnetic field IMF (B), solar wind speed (V), product of IMF and wind speed ($$V \cdot… read more here.
Keywords: solar wind; geomagnetic storms; solar cycles; study geomagnetic ... See more keywords
Study of the cosmic ray intensity in relation to geomagnetic storms and solar interplanetary parameters for solar cycles 21 and 23
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Astrophysics and Astronomy"
DOI: 10.1007/s12036-019-9593-2
Abstract: This paper comprises the comparative study of the behavior of CRI with geomagnetic storms, southward component of IMF, i.e. $${\vert }{} { Bz}{\vert }$$|Bz|, IMF B, solar wind speed (V) and $$V\cdot {\vert }{} {… read more here.
Keywords: cdot vert; vert; cri; geomagnetic storms ... See more keywords
Cosmic ray intensity increases during high solar activity period for the solar cycles 22 and 23
Sign Up to like & getrecommendations! Published in 2019 at "Indian Journal of Physics"
DOI: 10.1007/s12648-018-1284-3
Abstract: The varying solar output is affected by the Sun’s activity and associated phenomena. Predictions of solar and geomagnetic activity are important for various technologies, including the operation of low-earth-orbiting satellites, electric power transmission grids, geophysical… read more here.
Keywords: physics; cosmic ray; activity; solar cycles ... See more keywords
Study of solar energetic particles: their source regions, flares and CMEs during solar cycles 23–24
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DOI: 10.1007/s12648-025-03619-8
Abstract: In this work, we examine the association between solar active regions and 152 solar flares, coronal mass ejections, and solar energetic particle (SEP) events over solar cycles 23–24 (1997–2017). The Coordinated Data Analysis Workshops center's… read more here.
Keywords: active regions; magnetically complex; complex active; solar energetic ... See more keywords
North-South asymmetry of some solar parameters: A study based on the dominance of hemispheric sunspot activity during the solar cycles 18–24
Sign Up to like & getrecommendations! Published in 2021 at "Chinese Journal of Physics"
DOI: 10.1016/j.cjph.2021.02.007
Abstract: Abstract Solar activity indices differ over the solar disk, and different activity parameters are not considered to be symmetric between the northern and southern solar hemispheres. In the present paper, the daily data of a… read more here.
Keywords: cycle; dominance; solar cycles; activity ... See more keywords