Results 101 to 110 of about 1,537 (202)

Turbulent convection as a significant hidden provider of magnetic helicity in solar eruptions. [PDF]

Sci Rep, 2023
Toriumi S, Hotta H, Kusano K.
europepmc   +1 more source

The Privileged Life of a Theoretical Observer. [PDF]

Sol Phys, 2022
Gough D.
europepmc   +1 more source

Full Waveform Inversion for Time-Distance Helioseismology

, 2014
Inferring interior properties of the Sun from photospheric measurements of the seismic wavefield constitutes the helioseismic inverse problem. Deviations in seismic measurements (such as wave travel times) from their fiducial values estimated for a given
Tromp, J., Tromp, Jeroen, Hanasoge, S., Hanasoge, Shravan M   +3 more
core   +1 more source

Anisotropic Magnetized Asteroseismic Waves

The Astrophysical Journal
We solve for waves in a polytropic, stratified plasma with a spatially varying background magnetic field that points along the horizontal x -direction, and with gravity that is directed along the vertical z -direction.
B. Tripathi, Dhrubaditya Mitra
doaj   +1 more source

Solar Flare 1/f Fluctuations from Amplitude-Modulated Five-Minute Oscillation. [PDF]

Entropy (Basel), 2023
Morikawa M, Nakamichi A.
europepmc   +1 more source

The Shape of the Solar Tachocline

The Astrophysical Journal
Early helioseismic results have shown that the tachocline has a prolate shape. However, the models used in those studies constrained the tachocline to be either prolate or oblate.
Sarbani Basu, Sylvain G. Korzennik
doaj   +1 more source

Towards passive non-line-of-sight acoustic localization around corners using uncontrolled random noise sources. [PDF]

Sci Rep, 2023
Boger-Lombard J, Slobodkin Y, Katz O.
europepmc   +1 more source

Characterizing the Observational Properties of the Sun’s High-latitude m = 1 Inertial Mode

The Astrophysical Journal
Low- m inertial modes have been recently discovered in the Sun’s high-latitude regions. In this study, we characterize the observational properties of the m = 1 mode by analyzing time–distance subsurface flow maps.
Boyang Ding, Junwei Zhao, Ruizhu Chen, Matthias Waidele, Sushant S. Mahajan, Oana Vesa   +5 more
doaj   +1 more source

Juno spacecraft gravity measurements provide evidence for normal modes of Jupiter. [PDF]

Nat Commun, 2022
Durante D, Guillot T, Iess L, Stevenson DJ, Mankovich CR, Markham S, Galanti E, Kaspi Y, Zannoni M, Gomez Casajus L, Lari G, Parisi M, Buccino DR, Park RS, Bolton SJ.   +14 more
europepmc   +1 more source

Time-Distance Helioseismology With The Mdi Instrument: Initial Results

, 2007
. In time-distance helioseismology, the travel time of acoustic waves is measured between various points on the solar surface. To some approximation, the waves can be considered to follow ray paths that depend only on a mean solar model, with the ...
T. D. Tarbell, T. L. Duvall, J. L. R. Saba, Jr., A. G. Kosovichev, R. S. Bogart, J. Schou, C. De Forest, P. H. Scherrer, C. J. Wolfson, A. M. Title, R. I. Bush, J. T. Hoeksema   +12 more
core