Results 31 to 40 of about 36,294 (263)
On rotation of solar filaments [PDF]
Proceedings of the International Astronomical Union, 2006 The study of the differential rotation law is an important issue in solar physics. Earlier studies of filaments found formulae for their differential rotation at stable existence stage. This paper relies on Big Bear Solar Observatory H-alpha filtergrams to estimate angular velocities of quiescent filaments at different stages of existence.
openaire +1 more source
GONG Catalog of Solar Filament Oscillations Near Solar Maximum [PDF]
The Astrophysical Journal Supplement Series, 2018 Abstract We have cataloged filament oscillations from the Global Oscillation Network Group Hα network data during several months near the maximum of solar cycle 24 (2014 January–June).
M. Luna +6 more
openaire +2 more sources
Automated High-Precision Recognition of Solar Filaments Based on an Improved U2-Net
UniverseSolar filaments are a significant solar activity phenomenon, typically observed in full-disk solar observations in the H-alpha band. They are closely associated with the magnetic fields of solar active regions, solar flare eruptions, and coronal mass ...
Wendong Jiang, Zhengyang Li
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The Astrophysical Journal, 2023 Although magnetic reconnection plays a key role in the formation of a solar filament, the detailed formation process is still ambiguous. Combining the observational data from the New Vacuum Solar Telescope and the Solar Dynamics Observatory, we analyzed ...
Liping Yang +9 more
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The Phase Shifts of the Paired Wings of Butterfly Diagrams
, 2010 Sunspot groups observed by Royal Greenwich Observatory/US Air Force/NOAA from May 1874 to November 2008 and the Carte Synoptique solar filaments from March 1919 to December 1989 are used to investigate the relative phase shift of the paired wings of ...
Feng, Wen, Li, Kejun, Liang, Hongfei
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Kinematics and Magnetic Properties of a Light Bridge in a Decaying Sunspot [PDF]
, 2016 We present the results obtained by analyzing high spatial and spectral resolution data of the solar photosphere acquired by the CRisp Imaging SpectroPolarimeter at the Swedish Solar Telescope on 6 August 2011, relevant to a large sunspot with a light ...
Borrero, J. M. +9 more
core +2 more sources
Evolution of helicity in NOAA 10923 over three consecutive solar rotations
, 2008 We have studied the evolution of magnetic helicity and chirality in an active region over three consecutive solar rotations. The region when it first appeared was named NOAA10923 and in subsequent rotations it was numbered NOAA 10930, 10935 and 10941. We
A. Pevtsov +13 more
core +1 more source
The Kinematical Behavior of Solar Eruptive Filaments Affected by the Poloidal Magnetic Field
The Astrophysical JournalKinematics of solar eruptive filaments is one of the important diagnostic parameters for predicting whether solar eruptions would induce geomagnetic storms.
Ye Qiu +5 more
doaj +1 more source
Advanced Functional Materials, EarlyView.A tandem gas diffusion electrode (GDE) leveraging hierarchically engineered microgranules enables efficient CO2 electroreduction under dilute CO2 conditions. A key innovation lies in the solvent‐free precision assembly of metal–organic‐frameworks, carbon nanotubes, and copper nanoparticles.
Kai‐Jen Wu +7 more
wiley +1 more source
A Unified Model of Solar Prominence Formation with Self-consistent Heating
The Astrophysical JournalSeveral models have been proposed to explain the formation of solar prominences, among which the evaporation–condensation model and the direct injection model are the most popular ones.
C. J. Huang +3 more
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