Results 11 to 20 of about 7,750 (265)
AIP Conference Proceedings, 2009 In recent years solar oscillations have been studied in great detail, both observationally and theoretically; so, perhaps, the Sun currently is the best understood pulsating star. The observational studies include long, almost uninterrupted series of oscillation data from the SOHO spacecraft and ground-based networks, GONG and BiSON, and more recently,
A. G. Kosovichev +2 more
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Low-frequency oscillations while magnetic storms as a tool to determine the types of solar plasma flows [PDF]
E3S Web of Conferences, 2020 Comparison of wavelet spectrum (skeletons) local maxima for disturbed components of solar plasma flow parameters and geomagnetic field disturbances recorded along the meridional station chain during geomagnetic storm intervals is performed in the range ...
Barkhatov N. A. +4 more
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Transverse Vertical Oscillations During the Contraction and Expansion of Coronal Loops
The Astrophysical Journal, 2023 In this paper, we carry out a detailed analysis of the M1.6 class eruptive flare occurring in NOAA active region 13078 on 2022 August 19. The flare is associated with a fast coronal mass ejection (CME) propagating in the southwest direction with an ...
Qingmin Zhang +7 more
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Solar Activity and Solar Oscillations [PDF]
Symposium - International Astronomical Union, 1997 Helioseismology provides us with the tools to probe solar activity. So that we can consider how the solar oscillations are influenced by that activity, we first consider the phenomena that we associate with the active Sun. The surface of the Sun is not quiet but shows evidence of convection on a wide range of scales from a few hundred kilometres ...
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Observations of solar-like oscillations [PDF]
Communications in Asteroseismology, 2005 AbstractThe solar-like oscillations are oscillations that are expected to be excited by near-surface convection. Apart from the Sun itself, we now have a number of stars where p-mode solar-like oscillations have been detected. In this paper we present a short presentation of those recently discovered oscillations.
Bedding, T., Kjeldsen, Hans
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Large scale coherent magnetohydrodynamic oscillations in a sunspot
Nature Communications, 2022 Co-existence of several magnetohydrodynamic oscillations modes on the Sun were predicted earlier. Here, the authors show large-scale coherent oscillations in a sunspot, with a spectrum different than solar global acoustic oscillations, incorporating a ...
M. Stangalini +13 more
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Oscillations and Waves in Solar Spicules [PDF]
Space Science Reviews, 2009 34 pages, 25 figures, accepted in Space Science ...
Zaqarashvili, T.V., Erdelyi, R.
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Techniques for Observing Solar Oscillations [PDF]
Symposium - International Astronomical Union, 1988 There is currently a wide range of methods for observing the properties of solar oscillations. It is generally true, however, that the means used to analyze the data are just as important to the final result as the instrumentation. I discuss first the instrumental techniques used to observe solar p-modes, with attention given both to low- and no ...
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Intermediate Degree Solar Oscillations [PDF]
Symposium - International Astronomical Union, 1988 Spectra of solar intensity oscillations in the degree range ℓ = 20–98 were obtained with a 92% duty cycle over a 50 hour period from the geographic South Pole. After correction for solar rotation, the spectra have been averaged over azimuthal order m and fit with Lorentzian functions to provide values of background noise, amplitude, frequency and line ...
T. L. Duvall +2 more
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Annals of Geophysics, 1996 The results of Lastovicka and Mlch (1994) and Altadill and Lastovicka (1996) are extended by the use of f0F2 and h'F data from Juliusruh, Lannion and Rome.
P. Mlch, J. Lastovicka
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