Periodicity in the solar wind velocity, temperature and number density

Das, T. K.; Ghosh, Mohendro Kumar

doi:10.1046/j.1365-8711.1999.02940.x

Cited by 3 publications

(1 citation statement)

References 6 publications

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“…All of these models were used to study the interaction between solar wind parameters and magnetospheric plasma indices. The harmonic behavior of solar wind velocity, temperature and number density was investigated by analyzing data from the Pioneer XII satellite during 1980-1987(Das & Ghosh 1999. Studies by Das & Ghosh were about the periodicity of the solar wind velocity, density and temperature.…”

Section: Introductionmentioning

confidence: 99%

A statistical study of the interdependence of solar wind parameters

John¹,

Kurian²

2009

Res. Astron. Astrophys.

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Correlation analysis of solar wind parameters, namely solar wind velocity, proton density, proton temperature and mean interplanetary magnetic field (IMF) from the ACE spacecraft data near Earth, was done. To our best knowledge, this study is a novel one since we consider here only the parameters inside the solar wind, including the mean IMF and, hence, the solar wind is a self consistent system. We have proposed a Multiple Linear Regression (MLR) model for the prediction of the response variable (solar wind velocity) using the parameters proton density, proton temperature and mean IMF measured as daily averages. About 60% of the observed value can be predicted using this model. It is shown that, in general, the correlation between solar wind parameters is significant. A deviation from the prediction at the solar maximum is interpreted. These results are verified by a graphical method.

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Section: Introductionmentioning

confidence: 99%

A statistical study of the interdependence of solar wind parameters

John¹,

Kurian²

2009

Res. Astron. Astrophys.

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Astrophysics in 2000

Trimble

Aschwanden

2001

PUBL ASTRON SOC PAC

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It was a year in which some topics selected themselves as important through the sheer numbers of papers published. These include the connection(s) between galaxies with active central engines and galaxies with starbursts, the transition from asymptotic giant branch stars to white dwarfs, gamma-ray bursters, solar data from three major satellite missions, and the cosmological parameters, including dark matter and very large scale structure. Several sections are oriented around processes-accretion, collimation, mergers, and disruptions-shared by a number of kinds of stars and galaxies. And, of course, there are the usual frivolities of errors, omissions, exceptions, and inventories.

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Periodicities of solar electron flare occurrence: analysis of cycles 21–23

Chowdhury¹,

Ray²

2006

Monthly Notices of the Royal Astronomical Society

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The data of energetic solar electron fluences measured in two ranges of energy values (E > 0.6 and 2 MeV) by the IMP‐8 spacecraft of NASA, in the solar cycles 21, 22 and a major part of the current cycle 23, have been analysed for the first time by three different methods to detect periodicities accurately. Power spectral analysis of electron flux data shows a periodicity of ∼152 d for cycle 21, ∼330 and ∼604 d for cycle 22 and ∼152 and ∼176 d for the current cycle 23. The respective periodicities are found to be independent of the electron energy as are the other kinds of solar activity reported by earlier researchers, thus indicating the intimate relationship of electron emission with solar activity.

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Periodicity in the solar wind velocity, temperature and number density

Cited by 3 publications

References 6 publications

A statistical study of the interdependence of solar wind parameters

A statistical study of the interdependence of solar wind parameters

Astrophysics in 2000

Periodicities of solar electron flare occurrence: analysis of cycles 21–23

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