Results 71 to 80 of about 961,519 (212)
Solar Cycle in Photosphere and Corona [PDF]
Proceedings of the International Astronomical Union, 2004 The solar cycle in photosphere and corona reflects the internal dynamics on the Sun. According to the modern understanding the observed behavior of solar activity is related to the dynamo process in convection zone and photosphere and it is closely connected with the evolution of the coronal structures.
openaire +1 more source
Periodic Density Structures Observed in Ulysses Data: First Results
Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.Abstract Periodic density structures (PDSs) are advecting quasi‐periodic (periodicities between several minutes and several hours) density enhancements observed in the solar wind and corona. There is strong evidence that PDSs are formed at the Sun.
Brent M. Randol +3 more
wiley +1 more source
Vortices in the solar photosphere
, 2012 Using numerical simulations of the magnetised solar photosphere and radiative diagnostics of the simulated photospheric models, we further analyse the physical nature of magnetic photospheric intergranular vortices. We confirm the magnetic nature of the vortices and find that most MHD Umov-Poynting flux is produced by horizontal vortex motions in the ...
Shelyag, S. +4 more
openaire +2 more sources
The Astrophysical JournalFull-disk measurements of the solar magnetic field by the Helioseismic and Magnetic Imager (HMI) are often used for magnetic field extrapolations, but its limited spatial and spectral resolution can lead to significant errors.
C. Beck +5 more
doaj +1 more source
The formation and stability of Petschek reconnection [PDF]
, 2014 E. R. Priest is grateful to the Leverhulme Trust. T. G. Forbes received support from NASA grant NNX-10AC04G to the University of New Hampshire. H. Baty acknowledges support by French National Research Agency (ANR) through Grant ANR-13-JS05-0003-01 ...
E. R. Priest +5 more
core +1 more source
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
doaj +1 more source
Exploring Solar Granulation: from IMaX/SUNRISE to DKIST
Proceedings of the International Florida Artificial Intelligence Research Society ConferenceGranules are small cellular structures that populate the solar photosphere and are formed by the dynamic behavior of convection cells. This constant motion generates an evolving pattern of diverse granule types and intergranular regions across the ...
Reza Mansouri +2 more
doaj +1 more source
Performance of a building integrated photovoltaic/thermal (BIPVT) solar collector [PDF]
, 2009 The idea of combining photovoltaic and solar thermal collectors (PVT collectors) to provide electrical and heat energy is an area that has, until recently, received only limited attention.
Carson, James K. +3 more
core +1 more source
Origin of Line Broadening in Fading Granules: Influence of Small-scale Turbulence
The Astrophysical JournalIn the quiet region of the solar photosphere, turbulent convective motions of the granular flows naturally drive the subgranular-scale flows. However, evaluating such small-scale velocities is challenging because of the limited instrumental resolution ...
Ryohtaroh T. Ishikawa, Yukio Katsukawa
doaj +1 more source
Assessment of DKIST/VTF capabilities for the detection of local acoustic source wavefronts
Frontiers in Astronomy and Space SciencesIntroductionRecent studies have demonstrated that temporal filtering can successfully identify local acoustic source wavefronts in radiative magnetohydrodynamic simulations of the solar photosphere.
Corinne Morrell +6 more
doaj +1 more source