Results 71 to 80 of about 5,529 (192)
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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, 2010 Solar supergranulation remains a mystery in spite of decades of intensive studies. Most of the papers about supergranulation deal with its surface properties.
Beck +21 more
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Ghost Images in Helioseismic Holography? Toy Models in a Uniform Medium [PDF]
, 2018 Helioseismic holography is a powerful technique used to probe the solar interior based on estimations of the 3D wavefield. Porter--Bojarski holography, which is a well-established method used in acoustics to recover sources and scatterers in 3D, is also ...
Yang, Dan
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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
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Time–distance helioseismology [PDF]
Nature, 1993 It is shown here that it is possible to extract time-distance information from temporal cross-correlations of the intensity fluctuation on the solar surface. This approach opens the way for seismic studies of local solar phenomena such subsurface inhomogeneities near sunspots and should help to refine global models of the internal velocity ...
T. L. Duvall +3 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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Direct and indirect detection of dissipative dark matter
, 2014 We study the constraints from direct detection and solar capture on dark matter scenarios with a subdominant dissipative component. This dissipative dark matter component in general has both a symmetric and asymmetric relic abundance.
Fan, JiJi, Katz, Andrey, Shelton, Jessie
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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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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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Can Proton Beam Heating Flare Models Explain Sunquakes?
The Astrophysical Journal, 2023 Solar Dynamics Observatory (SDO)/Helioseismic and Magnetic Imager (HMI) observations reveal a class of solar flares with substantial energy and momentum impacts in the photosphere, concurrent with white-light emission and helioseismic responses, known as
Viacheslav M. Sadykov +6 more
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