Results 131 to 140 of about 1,260 (214)

Progress in sunspot helioseismology

Journal of Physics: Conference Series, 2011
Local helioseismology is a set of methods that are used to study wave propagation and infer physical conditions in the solar interior. Sunspots are a particularly challenging target for local helioseismology. In this review, I will show that some new methods (magnetoconvection simulations and numerical wave propagation simulations) lead to shallow ...
openaire   +1 more source

Les Trente Glorieuses: 29 years of helioseismic observations with the Luminosity Oscillations Imager

Astronomy & Astrophysics
Context. The Luminosity Oscillations Imager (LOI) of the Variability of Solar Irradiance and Gravity Oscillations (VIRGO) instrument on board the SoHO mission has been operating for almost 30 years. Aims.
Appourchaux T.
doaj   +1 more source

Local helioseismology and correlation tracking analysis of surface structures in realistic simulations of solar convection

, 2007
Time-distance helioseismology, scale simulations of solar convection Udgivelsesdato ...
Stein, Robert F., Kosovichev, Alexander, Georgobiani, Dali, Zhao, Junwei, Nordlund, Åke, Benson, David   +5 more
core  

Solar core homology, solar neutrinos and helioseismology

, 1995
Precise numerical standard solar models (SSMs) now agree with one another and with helioseismological observations in the convective and outer radiative zones.
Kennedy, D. C., Bludman, S. A.
core   +1 more source

Active-region Modulation of Subsurface Meridional Flows and Magnetic Flux Transport on the Sun

The Astrophysical Journal Letters
Using time–distance helioseismology applied to 14 yr of Solar Dynamics Observatory/Helioseismic and Magnetic Imager observations spanning solar cycle 24 and the rising phase of cycle 25, we present evidence that meridional flows in the lower half of the ...
Anisha Sen, S.P. Rajaguru, Ruizhu Chen, Junwei Zhao, Shukur Kholikov   +4 more
doaj   +1 more source

Exploring the Dynamics of Near-Surface Solar Convection with Helioseismology

, 2015
I present a new implementation of local helioseismology along with observations of near-surface solar convection made with this method. The upper 5% of the solar radius (35 Mm) is known as the Near-Surface Shear Layer (NSSL) and is characterized by ...
Greer, Benjamin J.
core   +1 more source

Helioseismic Properties of Dynamo Waves in the Variation of Solar Differential Rotation

The Astrophysical Journal
Solar differential rotation exhibits a prominent feature: its cyclic variations over the solar cycle, referred to as zonal flows or torsional oscillations, are observed throughout the convection zone.
Krishnendu Mandal, Alexander G. Kosovichev, Valery V. Pipin   +2 more
doaj   +1 more source

Large-Scale Dynamics of the Convection Zone and Tachocline

Living Reviews in Solar Physics, 2005
The past few decades have seen dramatic progress in our understanding of solar interior dynamics, prompted by the relatively new science of helioseismology and increasingly sophisticated numerical models.
Miesch Mark S.
doaj  

Turbulence in the Sun is suppressed on large scales and confined to equatorial regions. [PDF]

Sci Adv, 2020
Hanasoge SM, Hotta H, Sreenivasan KR.
europepmc   +1 more source

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,, Pham, Ha, Barucq, Hélène, Fournier, Damien, Faucher, Florian   +4 more
core   +1 more source