A comparative study of solar activity parameters during the period 2009–2012 and 2020–2023 (ascending phase of solar cycles 24 and 25)

Singh, P. R.; Singh Kushwaha, Upendra Kr.

doi:10.1007/s10509-024-04344-0

Astrophys Space Sci

2024

DOI: 10.1007/s10509-024-04344-0

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A comparative study of solar activity parameters during the period 2009–2012 and 2020–2023 (ascending phase of solar cycles 24 and 25)

P. R. Singh,

Upendra Kr. Singh Kushwaha

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Heliospheric Effect on Solar Activity Parameters during Maximum Phase of Solar Cycle 24 (2012–2015)

Singh,

Kushwaha,

Singh

et al. 2024

Res. Astron. Astrophys.

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The time series of daily data of solar activity proxies, namely the sunspot number (SSN), sunspot area (SSA), solar radio flux (F10.7), modified coronal index (MCI), solar flare index (FI), and cosmic ray intensity (CRI), were analyzed to understand the solar activity modulations and short-term periodicities therein. Rieger-type, and other short-term periods, including the solar rotational period that covers the maximum activity phase period (maximum phase of solar cycle 24). The wavelet power spectra and Periodogram of SSN, SSA, F10.7, MCI, FI, and CRI exhibited a significant short-term period. The heliospheric effects exist for a particular period (~27 days) and it is related to the solar activity phenomena. The cross-correlation coefficients and time lags between the cosmic ray intensity and solar activity parameters were estimated to be 200, 46, 281, 39, and 47 days for SSN, SSA, F10.7, MCI, and FI respectively during the time series 2012-2015 (maximum phase of solar cycle 24).

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Heliospheric Effect on Solar Activity Parameters during Maximum Phase of Solar Cycle 24 (2012–2015)

Singh,

Kushwaha,

Singh

et al. 2024

Res. Astron. Astrophys.

View full text Add to dashboard Cite

show abstract

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A comparative study of solar activity parameters during the period 2009–2012 and 2020–2023 (ascending phase of solar cycles 24 and 25)

Cited by 1 publication

References 39 publications

Heliospheric Effect on Solar Activity Parameters during Maximum Phase of Solar Cycle 24 (2012–2015)

Heliospheric Effect on Solar Activity Parameters during Maximum Phase of Solar Cycle 24 (2012–2015)

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