Results 1 to 10 of about 1,066 (184)
Astronomy & AstrophysicsContext. Granular collapse is a ubiquitous process of granular evolution on the solar surface, but it is hard to analyze in sufficient spatial, temporal, and spectral detail. Aims. We analyzed the change in physical conditions in the photosphere during a
Buttler J. +7 more
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Chromospheric Magnetic Field Extrapolations Reveal the Flux-rope Configuration of a Solar Filament
The Astrophysical Journal LettersSolar eruptions are powered by the release of magnetic energy stored in the lower solar atmosphere, but the preeruptive magnetic configuration of filament channels remains difficult to determine.
Robert Jarolim +7 more
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The Plasma β in Quiet Sun Regions: Multi-instrument View
The Astrophysical JournalA joint campaign of several spaceborne and ground-based observatories, such as the GREGOR solar telescope, the Extreme-ultraviolet Imaging Spectrometer (EIS), and the Interface Region Imaging Spectrograph (Hinode Observing Plan 381, 2019 October 11–22 ...
Jenny M. Rodríguez-Gómez +6 more
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Collective Vortex Dynamics: From Isolated Vortices to Their Communities
The Astrophysical JournalSmall-scale vortical motions in the upper solar atmosphere are abundant and occupy about 2.8% of the photosphere at any given time. Although considerable work has focused on the detection and analysis of individual solar vortices, the interconnected and ...
Lauren McClure +4 more
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Variations in Dominant Wave Period in the Solar Atmosphere
The Astrophysical JournalWaves are an integral part of the solar atmosphere, and their characteristics (e.g., dominant period, range of periods, power, and phase angle) change on a diverse spatiotemporal scale.
Pradeep Kayshap +3 more
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Structure of the solar photosphere studied from the radiation hydrodynamics code ANTARES. [PDF]
Astrophys Space Sci, 2017 Leitner P +6 more
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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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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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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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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
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