Results 21 to 30 of about 1,185,541 (288)

Large scale coherent magnetohydrodynamic oscillations in a sunspot

open access: yesNature 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
doaj   +1 more source

The propagation and damping of slow magnetoacoustic waves in the solar atmosphere [PDF]

open access: yes, 2012
The propagation and damping of slow magnetoacoustic waves in the solar atmosphere is investigated, with particular emphasis placed on waves with periodicities of five minutes. The basic model of a uniform temperature loop is extended by the addition of
Owen, Nicholas Robert
core   +2 more sources

Oscillations and Waves in Solar Spicules [PDF]

open access: yesSpace Science Reviews, 2009
34 pages, 25 figures, accepted in Space Science ...
Zaqarashvili, T.V., Erdelyi, R.
openaire   +3 more sources

Techniques for Observing Solar Oscillations [PDF]

open access: yesSymposium - 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 ...
openaire   +1 more source

Solar cycle effect on oscillations in the period range of 2-20 days in the F region of the ionosphere

open access: yesAnnals 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
doaj   +1 more source

Observations of solar-like oscillations [PDF]

open access: yesCommunications 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
openaire   +7 more sources

Simulation of Magnetospheric Sawtooth Oscillations: The Role of Kinetic Reconnection in the Magnetotail

open access: yesGeophysical Research Letters, 2022
Magnetospheric sawtooth oscillations are observed during strong and steady solar wind driving conditions. The simulation results of our global magnetohydrodynamics (MHD) model with embedded kinetic physics show that when the total magnetic flux carried ...
Xiantong Wang, Yuxi Chen, Gábor Tóth
doaj   +1 more source

Solar oscillations [PDF]

open access: yesProceedings of the International Astronomical Union, 2008
AbstractStudy of solar oscillations has provided us detailed information about solar structure and dynamics. These in turn provide a test of theories of stellar structure and evolution as well as theories of angular momentum transfer and dynamo. Some of these results about the solar structure and its implication on the recent revision of heavy element ...
openaire   +1 more source

The Hot Limit of Solar-like Oscillations From Kepler Photometry

open access: yesFrontiers in Astronomy and Space Sciences, 2020
Kepler short-cadence photometry of 2,347 stars with effective temperatures in the range 6,000–10,000 K was used to search for the presence of solar-like oscillations.
Luis A. Balona
doaj   +1 more source

Propagation and damping of MHD waves in the solar atmosphere [PDF]

open access: yes, 2015
Quasi-periodic disturbances have been observed in the outer solar atmosphere for many years. Although first interpreted as upflows (Schrijver et al.
Kiddie, Greg
core   +2 more sources

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