Results 81 to 90 of about 1,260 (214)
HELAS Local Helioseismology Activities [PDF]
Communications in Asteroseismology, 2009 The main goals of the HELAS local helioseismology network activity are to consolidate this field of research in Europe, to organise scientific workshops, and to facilitate the distribution of observations and data analysis software. Most of this is currently accomplished via a dedicated website at http://www.mps.mpg.de/projects/seismo/NA4/ .
Schunker, H., Gizon, L.
openaire +4 more sources
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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Observed Power and Frequency Variations of Solar Rossby Waves with Solar Cycles
The Astrophysical Journal Letters, 2023 Several recent studies utilizing different helioseismic methods have confirmed the presence of large-scale vorticity waves known as solar Rossby waves within the Sun.
M. Waidele, Junwei Zhao
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Helioseismology, Asteroseismology, and MHD Connections
, 2008 This volume presents a timely snapshot of the state of helio- and asteroseismology in the era when the SOHO/MDI instrument is about to be replaced by SDO/HMI and the CoRoT space mission is yielding its first long-duration light curves of thousands of ...
Gizon, Laurent +5 more
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The Astrophysical Journal, 2023 Using time–distance local helioseismology flow maps within 1 Mm of the solar photosphere, we detect inflows toward activity belts that contribute to solar-cycle scale variations in the near-surface meridional flow. These inflows stretch out as far as 30°
Sushant S. Mahajan +2 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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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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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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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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