Results 71 to 80 of about 1,537 (202)
The Astrophysical JournalThe ubiquitous 5 minute solar p -mode oscillations, excited at the photosphere, play a crucial role in driving various coronal instabilities and mediating upward energy transport. These modes are strongly influenced by nonthermal electron populations. To
Souvik Das, Pralay Kumar Karmakar
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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.
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Helioseismology: Observations and space missions [PDF]
, 2015 Chapter 2 of the book Extraterrestrial Seismology, 16 pages, 5 figures; doi:10.1017/CBO9781107300668 ...
P. L. Pallé +3 more
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Bulletin de la Société Royale des Sciences de Liège, 2020 Helioseismology is one of the most successful fields of astrophysics. The observation and character-ization of solar oscillation has allowed solar seismologists to study the internal structure and dynamics of the Sun with unprecedented thoroughness. Ground-based networks and dedicated space missions have delivered data of exquisite quality, enabling ...
openaire +4 more sources
Computational aspects of Green's kernels in local helioseismology.
International audienceHelioseismology infers the interior of the Sun from oscillations which are continuously excited by near-surface turbulent convection and observed in the photosphere.
Gizon, Laurent, +4 more
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A Broad Set of Solar and Cosmochemical Data Indicates High C-N-O Abundances for the Solar System
The Astrophysical JournalWe examine the role of refractory organics as a major C carrier in the outer protosolar nebula and its implications for the compositions of large Kuiper Belt objects (KBOs) and CI chondrites.
Ngoc Truong +2 more
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Reconstruction of Solar Subsurfaces by Local Helioseismology
, 2016 Local helioseismology has opened new frontiers in our quest for understanding of the internal dynamics and dynamo on the Sun. Local helioseismology reconstructs subsurface structures and flows by extracting coherent signals of acoustic waves traveling ...
Kosovichev, Alexander G. +3 more
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Persistent Near-Surface Flow Structures from Local Helioseismology [PDF]
, 2015 Near-surface flows measured by the ring-diagram technique of local helioseismology show structures that persist over multiple rotations. We examine these phenomena using data from the Global Oscillation Network Group (GONG) and the Helioseismic and ...
Komm, R. W. +15 more
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Investigating Variations in Solar Differential Rotation by Helioseismology
The Astrophysical JournalHelioseismic signatures of dynamo waves have recently been discovered in variations of the solar differential rotation, offering valuable insights into the type of dynamo mechanism operating in the solar convection zone. To characterize these variations,
Krishnendu Mandal +3 more
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Application of Fano profiles to asymmetric resonances in helioseismology
, 2001 Parallels are drawn between the asymmetric resonance profiles observed in global helioseismology and the Fano theory for autoionisation profiles in atomic spectroscopy.
P. Boumier +3 more
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