Results 21 to 30 of about 14,186 (205)
Photospheric high-frequency acoustic power excess in sunspot umbra: signature of magneto-acoustic modes [PDF]
, 2013 We present observational evidence for the presence of MHD (magnetohydrodynamic) waves in the solar photosphere deduced from SOHO/MDI (Solar and Heliospheric Observatory/Michelson Doppler Imager) Dopplergram velocity observations.
Shelyag, S. +14 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.
openaire +3 more sources
Observational signatures of waves and flows in the solar corona [PDF]
, 2015 DM acknowledges support of a Royal Society University Research Fellowship and a KU Leuven Research Council senior research fellowship (SF/12/008). The research leading to these results has also received funding from the European Commission Seventh ...
Antolin, Patrick +3 more
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Geophysical 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
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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3D reconstruction of coronal loops by the principal component analysis [PDF]
, 2013 Knowing the three dimensional structure of plasma filaments in the uppermost part of the solar atmosphere, known as coronal loops, and especially their length, is an important parameter in the wave-based diagnostics of this part of the Sun.
Nisticò, Giuseppe +6 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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The Hot Limit of Solar-like Oscillations From Kepler Photometry
Frontiers 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
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Evidence of Transverse Magnetospheric Field Line Oscillations as Observed from Cluster and Ground Magnetometers [PDF]
, 2005 The dynamic spectrum of ULF waves from magnetic field data obtained by the elliptically orbiting Cluster satellites (with an apogee of 119 000 km, perigee of 19 000 km and the orbital period of 57 h) have been prepared in the frequency range 0 to 120 mHz
A. Balogh (7591361) +17 more
core +1 more source