Results 71 to 80 of about 1,260 (214)
Journal of Geophysical Research: Space Physics, Volume 129, Issue 5, May 2024.Abstract The primary external energy input to planetary atmospheres comes from solar radiation. Accurate estimates of solar irradiance are needed in order to understand atmospheric conditions at other planets. Many studies have interpolated Earth‐based irradiance measurements at other planets, disregarding the evolution of solar features, which are ...
I. de Oliveira +3 more
wiley +1 more source
Assessment of DKIST/VTF capabilities for the detection of local acoustic source wavefronts
Frontiers in Astronomy and Space SciencesIntroductionRecent studies have demonstrated that temporal filtering can successfully identify local acoustic source wavefronts in radiative magnetohydrodynamic simulations of the solar photosphere.
Corinne Morrell +6 more
doaj +1 more source
Global helioseismology (WP4.1): From the Sun to the stars & solar analogs
EPJ Web of Conferences, 2017 Sun-as-a star observations put our star as a reference for stellar observations. Here, I review the activities in which the SPACEINN global seismology team (Working Package WP4.1) has worked during the past 3 years. In particular, we will explain the new
García Rafael A.
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Observational Evidence of Shallow Origins for the Magnetic Fields of Solar Cycles
Frontiers in Astronomy and Space Sciences, 2018 Observational evidence for the origin of active region magnetic fields has been sought from published information on extended solar cycles, statistical distributions of active regions and ephemeral regions, helioseismology results, positional ...
Sara F. Martin
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The Astrophysical Journal, 2023 Mapping the large-scale subsurface plasma flow profile within the Sun has been attempted using various methods for several decades. One such flow in particular is the meridional circulation, for which numerous studies have been published.
Aleczander Herczeg, Jason Jackiewicz
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Determining solar abundances using helioseismology [PDF]
, 2006 The recent downward revision of solar photospheric abundances of oxygen and other heavy elements has resulted in serious discrepancies between solar models and solar structure as determined through helioseismology.
Basu, Sarbani, Antia, H. M.
core +1 more source
Solar Interior Rotation and its Variation
Living Reviews in Solar Physics, 2009 This article surveys the development of observational understanding of the interior rotation of the Sun and its temporal variation over approximately forty years, starting with the 1960s attempts to determine the solar core rotation from oblateness and ...
Howe Rachel
doaj
On the Technique of the Inversion of Helioseismological Data [PDF]
Symposium - International Astronomical Union, 1988 The asymptotic inversion technique is developed, including independent determination of the sound speed profile and frequency dependence of the effective phase shift. Numerical results are presented.
M.A. Brodsky, S. V. Vorontsov
openaire +1 more source
Probing sunspots with two-skip time–distance helioseismology [PDF]
, 2018 Context. Previous helioseismology of sunspots has been sensitive to both the structural and magnetic aspects of sunspot structure.Aims. We aim to develop a technique that is insensitive to the magnetic component so the two aspects can be more readily ...
Gizon, Laurent +17 more
core +1 more source
Reviews of Modern Physics, 2002 60 pages, 27 figures. Scheduled for publication in Rev. Mod. Phys., Oct. 2002. A larger gzipped postscript version, with higher-quality figures, is available at http://astro.ifa.au.dk/~jcd/papers/rmp01/text-13.ps ...
openaire +3 more sources