Results 121 to 130 of about 3,875 (223)
Predicting Solar Sigmoid Lifetimes Based on Shearing in the Photosphere
, 2015 This project’s purpose was to study how the speed at which the plasma in the photosphere of the sun affects the lifetime and shape of a solar sigmoid. Solar sigmoids are S-shaped, twisted magnetic structures that are due to the shifting magnetic field ...
Stone, Austen
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A Modified Multilevel Tracking Scheme for the Detection of Sunspot Umbral Dots
The Astrophysical JournalUmbral dots (UDs) are small-scale convective intrusions in the umbral core of sunspots and pores. Different methods have been used in the past to determine the physical properties of UDs.
Rohan Eugene Louis, Amit Chaturvedi
doaj +1 more source
The origin of the reversed granulation in the solar photosphere
, 2006 Aims.We study the structure and reveal the physical nature of the reversed granulation pattern in the solar photosphere by means of 3-dimensional radiative hydrodynamics simulations.
F. Moreno-Insertis +2 more
core +1 more source
Magnetic Fields in the Solar Convection Zone
Living Reviews in Solar Physics, 2009 Active regions on the solar surface are generally thought to originate from a strong toroidal magnetic field generated by a deep seated solar dynamo mechanism operating at the base of the solar convection zone.
Yuhong Fan
doaj
Magnetic Flux Emergence and Solar Eruptions in Partially Ionized Plasmas
The Astrophysical JournalWe have performed 3D MHD simulations to study the effect of partial ionization in the process of magnetic flux emergence in the Sun. In fact, we continue previous work, and we now focus (1) on the emergence of the magnetic fields above the solar ...
Georgios Chouliaras, V. Archontis
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Vorticity in the solar photosphere
, 2011 Aims: We use magnetic and non-magnetic 3D numerical simulations of solar granulation and G-band radiative diagnostics from the resulting models to analyse the generation of small-scale vortex motions in the solar photosphere.Methods: Radiative MHD ...
Sergiy Shelyag (13094397) +3 more
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The Astrophysical Journal LettersMagnetic flux ropes are fundamental magnetic structures in solar eruptions, whose formation is generally attributed to: (1) the emergence of subsurface flux tubes; or (2) flux cancellation driven by photospheric horizontal flows and magnetic reconnection.
Can Wang +5 more
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Magnetohydrodynamic waves in structured atmospheres
, 2012 The effect of structuring, in the form of magnetic or density inhomogeneities, on the magnetohydrodynamic (mhd) waves of an infinite plasma is investigated.
Edwin, Patricia Mary
core
The Astrophysical JournalChromospheric differential rotation is a key component in comprehending the atmospheric coupling between the chromosphere and the photosphere at different phases of the solar cycle. In this study, we therefore utilize the newly calibrated multidecadal Ca
Dibya Kirti Mishra +7 more
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Variations of the Vector Magnetic Structures in the Solar Polar Regions Observed by Hinode
The Astrophysical JournalUsing the polar vector magnetic field data observed by Hinode from 2012 to 2021, we study the long-term variations of the magnetic flux, the flux proportion of different polarities, and the magnetic inclination with respect to the local normal in the ...
Shuhong Yang +9 more
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