Results 41 to 50 of about 1,568 (212)
Effects of localized horizontal flow patterns on eigenfrequencies of stellar global modes [PDF]
Serbian Astronomical Journal, 2005 The main goal of this paper is to estimate the significance of effects the flow profile U0(z) induces on computed global oscillation spectra. We solve numerically the eigenvalue problem for the described basic state configuration with reference to solar ...
Čadež V.M., Vanlommel P.
doaj +1 more source
One-sided arc averaging geometries in time–distance local helioseismology [PDF]
, 2021 Context. The study of solar oscillations (helioseismology) has been a very successful method of researching the Sun. Helioseismology teaches us about the structure and mean properties of the Sun.
Michal Švanda +5 more
core +1 more source
Helioseismology in a bottle: modal acoustic velocimetry
New Journal of Physics, 2014 Measurement of the differential rotation of the Sunʼs interior is one of the great achievements of helioseismology, providing important constraints for stellar physics. The technique relies on observing and analyzing rotationally-induced splittings of p -
Santiago Andrés Triana +5 more
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The Astrophysical Journal, 2023 In this paper, we refine a previously developed acoustic source filter, improving its reliability and extending its capabilities. We demonstrate how to fine-tune the filter to meet observational constraints and focus on specific wave-front speeds.
Shah Mohammad Bahauddin, Mark Peter Rast
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Purely Gain-Coupled Distributed-Feedback Bragg Semiconductor Laser Diode Emitting at 770 nm
Applied Sciences, 2021 The transition lines of Mg, K, Fe, Ni, and other atoms lie near 770 nm, therefore, this spectral region is important for helioseismology, solar atmospheric studies, the pumping of atomic clocks, and laser gyroscopes.
Chunkao Ruan +9 more
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Helioseismology with PICARD [PDF]
Journal of Physics: Conference Series, 2013 PICARD is a CNES micro-satellite launched in June 2010 (Thuillier at al. 2006). Its main goal is to measure the solar shape, total and spectral irradiance during the ascending phase of the activity cycle. The SODISM telescope onboard PICARD also allows us to conduct a program for helioseismology in intensity at 535.7 nm (Corbard et al. 2008).
Corbard, Thierry +12 more
openaire +4 more sources
Helioseismology and screening of nuclear reactions in the Sun
, 2001 Helioseismology and screening of nuclear reactions in the ...
VILLANTE, Francesco Lorenzo +4 more
core +2 more sources
Fluids, 2023 Contemporary three-dimensional physics-based simulations of the solar convection zone disagree with observations. They feature differential rotation substantially different from the true rotation inferred by solar helioseismology and exhibit a conveyor ...
Parag Gupta +2 more
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Saturn's Rings as a Seismograph to Probe Saturn's Internal Structure
AGU Advances, Volume 1, Issue 2, June 2020., 2020 As it has already done for Earth, the Sun, and the stars, seismology has the potential to radically change the way the interiors of giant planets are studied. In a sequence of events foreseen by only a few, observations of Saturn's rings by the Cassini spacecraft have rapidly broken ground on giant planet seismology. Gravity directly couples the planet'
Christopher R. Mankovich
wiley +1 more source
Global‐Scale Full‐Waveform Ambient Noise Inversion
Journal of Geophysical Research: Solid Earth, Volume 125, Issue 4, April 2020., 2020 Abstract We present the first application of full‐waveform ambient noise inversion to observed correlation functions that jointly constrains 3‐D Earth structure and heterogeneous noise sources. For this, we model and interpret ambient noise correlations as recordings of correlation wavefields, which completely eliminates the limiting assumptions of ...
Korbinian Sager +4 more
wiley +1 more source