Observations of solar pulsations

Severny, A. B.; Kotov, V. A.; Tsap, T. T.

doi:10.1038/259087a0

Cited by 191 publications

(38 citation statements)

References 6 publications

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“…They suggested that the oscillation signals might correspond to global modes of the Sun. Independently, in 1976, two groups, led by Andrei Severny at the Crimean Observatory [11] and George Isaak at the University of Birmingham [12] found long-period oscillations in global-Sun Doppler velocity signals. The oscillation with a period of 160 min was particularly prominent and stable.…”

Section: Brief History Of Helioseismologymentioning

confidence: 99%

Advances in Global and Local Helioseismology: An Introductory Review

Kosovichev

2011

The Pulsations of the Sun and the Stars

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Abstract. Helioseismology studies the structure and dynamics of the Sun's interior by observing oscillations on the surface. These studies provide information about the physical processes that control the evolution and magnetic activity of the Sun. In recent years, helioseismology has made substantial progress towards the understanding of the physics of solar oscillations and the physical processes inside the Sun, thanks to observational, theoretical and modeling efforts. In addition to the global seismology of the Sun based on measurements of global oscillation modes, a new field of local helioseismology, which studies oscillation travel times and local frequency shifts, has been developed. It is capable of providing 3D images of the subsurface structures and flows. The basic principles, recent advances and perspectives of global and local helioseismology are reviewed in this article.

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Section: Brief History Of Helioseismologymentioning

confidence: 99%

Advances in Global and Local Helioseismology: An Introductory Review

Kosovichev

2011

The Pulsations of the Sun and the Stars

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“…The first stimuli came from the startling observations of Hill et al (1976) in Arizona, Severny et al (1976) on Crimea, and Brookes et al (1976) in Birmingham, accompanied by a large volume of theoretical papers, the details of analysis of which soon went beyond the actual status of the observational facts.…”

Section: Introductionmentioning

confidence: 99%

Global Oscillations of the Sun

Deubner

1980

Highlights astron.

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The topic of this Joint Discussion has received enormously increased interest in the last couple of years, owing to its potential for the investigation of the structure of the interior of the sun, including related topics like the structure of the convection zone, solar metal abundance, and the still unsettled neutrino problem.The first stimuli came from the startling observations of Hill et al. (1976) in Arizona, Severny et al. (1976) on Crimea, and Brookes et al. (1976) in Birmingham, accompanied by a large volume of theoretical papers, the details of analysis of which soon went beyond the actual status of the observational facts.We then witnessed, however, the success of considerable refinements of the techniques of observation, together with an obvious widespread temptation to push the interpretation of many of the new results to the limits of optimism. Yet, despite of the still increasing body of data suggesting the reality of the solar origin of the observed phenomena, much scepticism was prompted by the complicated statistics and the intricate numerical procedures involved in the data analysis, as well as by the great uncertainty about the significance and the amounts of “noise” contributed to the signal by electronics, changes of the conditions of the ray path within the telescope, terrestrial atmospheric inhomogeneities and solar quasi-stationary motions.

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“…In the past 20 years a number of different groups have claimed to detect g-modes in the sun (e.g. Brookes et al 1976;Brown et al 1978;Delache & Scherrer 1983;Scherrer et al 1979;Severny et al 1976, Thomson et al 1995; for a detailed review of the observations please see the article by Pallé, 1991, and references therein), but thusfar there is no consensus that g-modes have in fact been observed. One of the objectives of the instruments aboard SOHO (VIRGO, GOLF and SOI) is to search for solar g-modes.…”

Section: Can We Detect Gravity Modes In the Sun?mentioning

confidence: 99%

Excitation of solar acoustic oscillations

Kumar

1997

Symp. - Int. Astron. Union

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The stochastic excitation of solar oscillations due to turbulent convection is reviewed. A number of different observational results that provide test for solar p-mode excitation theories are described. I discuss how well the stochastic excitation theory does in explaining these observations. The location and properties of sources that excite solar p-modes are also described. Finally, I discuss why solar g-modes should be linearly stable, and estimate the surface velocity amplitudes of low degree g-modes assuming that they are stochastically excited by the turbulent convection in the sun.

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Observations of solar pulsations

Cited by 191 publications

References 6 publications

Advances in Global and Local Helioseismology: An Introductory Review

Advances in Global and Local Helioseismology: An Introductory Review

Global Oscillations of the Sun

Excitation of solar acoustic oscillations

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