Results 91 to 100 of about 1,246,535 (274)
MODELLING OF SOLAR CORONAL OSCILLATIONS
Современная наука и инновации, 2022 Oscillations on coronal loops is one of main objects of the study in the coronal seismology, they are observed usually in various electromagnetic emission.
B. B. Mikhalyaev +3 more
doaj
Solar activity and solar flux oscillations
Izvestiya VUZ. Applied Nonlinear Dynamics, 1997 The conditions of full orbit solar flux observation by Solar Constant Monitor (SCM-2) from «Meteor—3» № 7 satellite in February 1995 are described. The power spectra of such daily measurement series of 108 min. duration during two weeks are obtained. The total solar flux oscillations (not registered earlier) with periods range 6-15 min.
Yury Sklyarov +4 more
openaire +1 more source
Spontaneous Cyclic Levitation of Glycerol‐Water Droplets at Low Pressures
Advanced Science, EarlyView.Under low pressure, a minute glycerol addition transforms the chaotic dynamics of freezing water droplets into cyclic levitation. Freeze‐concentration preserves liquid pathways that relax expansion‐induced stress, while freezing point depression weakens asymmetric vaporization recoil.
Chen Xu +10 more
wiley +1 more source
Pushing the Limit of Asteroseismic Detection for Cool Dwarfs Using TESS and Deep Learning
The Astrophysical JournalAsteroseismology provides a powerful probe of stellar interiors by detecting stellar oscillations, including solar-like oscillations, which are stochastically excited by near-surface convection.
Waly M. Z. Karim +8 more
doaj +1 more source
Shear‐Mode Direct Piezoelectric Response of Ferroelectric Nematic Liquid Crystals
Advanced Science, EarlyView.Periodic shear‐induced electric current measurements are reported on two archetypic ferroelectric nematic liquid crystal compounds. From the temperature, frequency and shear angle dependent results of the first and second harmonic current signals together with temperature and oscillatory rheology measurements, the effective piezoelectric coupling ...
Péter Salamon +4 more
wiley +1 more source
X-Ray and Spectral Ultraviolet Observations of Periodic Pulsations in a Solar Flare Fan/Looptop
The Astrophysical JournalWe present simultaneous X-ray and spectral ultraviolet observations of strikingly coherent oscillations in emission from a coronal looptop and fan structure, during the impulsive phase of a long-duration M-class solar flare.
Ryan J. French +5 more
doaj +1 more source
Excitation of Solar Acoustic Oscillations
Symposium - International Astronomical Union, 1997 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.
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Excitation‐Selective Hydrochromic Upconversion in Zero‐Dimensional Metal Halides
Advanced Science, EarlyView.Excitation wavelength dictates whether moisture speaks. In zero‐dimensional metal halides, the same humidity leaves the upconversion emission unchanged under 980 nm excitation yet triggers a distinct green‐to‐red shift under 1550 nm. This excitation‐selective hydrochromism, governed by the absorption at each wavelength, enables stimulus‐dependent ...
Joo Hyeong Han +6 more
wiley +1 more source
Origin of Solar Torsional Oscillations
The Astrophysical Journal, 2007 11 pages, 7 figures.
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Solar-like Oscillations in Semiregular Variables [PDF]
Astrophysics and Space Science, 2003 Power spectra of the light curves of semiregular variables, based on visual magnitude estimates spanning many decades, show clear evidence for stochastic excitation. This supports the suggestion by Christensen-Dalsgaard et al. (2001) that oscillations in these stars are solar-like, i.e., stochastically excited by convection, with mode lifetimes ranging
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