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Khramova, M. N.; Kononovich, E. V.; Krasotkin, S. A.

doi:10.1023/a:1022161304847

Cited by 7 publications

(2 citation statements)

References 5 publications

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“…The preliminary analysis of the QBV in the stars showed that the duration of this cycle is not constant during one 11-year cycle, as in the case of QBV of Sun's fluxes. The duration of the QBV of Sun's fluxes varies on average from 39 months at the beginning of the 11-year cycle to 25 months at the end of it [9].…”

Section: The Results Of Calculations Of the Variation Periods Of The ...mentioning

confidence: 99%

The activity of the solar atmosphere and solar-type stars at 11-year and quasi-biennial timescales

Бруевич

Kononovich

2011

Moscow Univ. Phys.

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We studied new simultaneous observations of the flux variations of the photospheric and chromospheric emissions of 33 solar-type stars and Sun during the HK-project that were conducted over the past 20 years. In addition to the known cyclic chromospheric emission variations of stars at the 11-year time scale, which were discovered at the Mount Wilson Observatory, we found a recurrences that are similar to the quasi-biennial variations of solar radiation. The results of calculations of the radiation fluxes variations periods of stars at the quasi-biennial scale are given.

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Section: The Results Of Calculations Of the Variation Periods Of The ...mentioning

confidence: 99%

The activity of the solar atmosphere and solar-type stars at 11-year and quasi-biennial timescales

Бруевич

Kononovich

2011

Moscow Univ. Phys.

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“…The quasi-periodicity of CMEs obtained from the study mainly includes the quasibiennial oscillations (QBOs) and the Rieger-type periodicity. QBOs have periodicities of around 2 years, a type of mid-term quasi-periodicity considered to be related to the solar dynamic process and the emergence of the solar magnetic flux (Obridko & Shelting 2001;Khramova et al 2002;Bazilevskaya et al 2014;Deng et al 2019). The periods ranging from 130 to 220 days are called the Rieger-type periods that are thought to be related to the periodic emergence of magnetic flux from the deep solar interior (Ballester et al 2002).…”

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confidence: 99%

Quasiperiodic Variations of Coronal Mass Ejections with Different Angular Widths

Deng

Wang

et al. 2023

ApJS

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Coronal mass ejections (CMEs) are energetic expulsions of organized magnetic features from the Sun. The study of CME quasiperiodicity helps establish a possible relationship between CMEs, solar flares, and geomagnetic disturbances. We used the angular width of CMEs as a criterion for classifying the CMEs in the study. Based on 25 yr of observational data, we systematically analyzed the quasiperiodic variations corresponding to the CME occurrence rate of different angular widths in the northern and southern hemispheres, using frequency and time–frequency analysis methods. There are various periods for CMEs of different angular widths: 9 months, 1.7 yr, and 3.3–4.3 yr. Compared with previous studies based on the occurrence rate of CMEs, we obtained the same periods of 1.2 (±0.01), 3.1 (±0.04), and ≈6.1 (±0.4) months, and 1.2 (±0.1) and 2.4 (±0.4) yr. We also found additional periods of all CMEs that appear only in one hemisphere or during a specific solar cycle. For example, 7.1 (±0.2) months and 4.1 (±0.2) yr in the northern hemisphere, 1 (±0.004) and 5.9 (±0.2) months and 1 (±0.1), 1.4 (±0.1), and 2.4 (±0.4) yr in the southern hemisphere, 6.1 (±0.4) months in solar cycle 23, and 6.1 (±0.4) months and 1.2 (±0.1) and 3.7 (±0.2) yr in solar cycle 24. The analysis shows that quasiperiodic variations of the CMEs are a link among oscillations in coronal magnetic activity, solar flare eruptions, and interplanetary space.

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A Combined Analysis of the Observational Aspects of the Quasi-biennial Oscillation in Solar Magnetic Activity

Bazilevskaya

Broomhall

Elsworth

et al. 2015

Space Sciences Series of ISSI

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Cited by 7 publications

References 5 publications

The activity of the solar atmosphere and solar-type stars at 11-year and quasi-biennial timescales

The activity of the solar atmosphere and solar-type stars at 11-year and quasi-biennial timescales

Quasiperiodic Variations of Coronal Mass Ejections with Different Angular Widths

A Combined Analysis of the Observational Aspects of the Quasi-biennial Oscillation in Solar Magnetic Activity

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