Results 1 to 10 of about 1,317,599 (233)
Magnetic Twists of Solar Filaments [PDF]
The Astrophysical Journal, 2021 Abstract Solar filaments are cold and dense materials situated in magnetic dips, which show distinct radiation characteristics compared to the surrounding coronal plasma. They are associated with coronal sheared and twisted magnetic field lines.
J. H. Guo +5 more
semanticscholar +6 more sources
Developing an Automated Detection, Tracking, and Analysis Method for Solar Filaments Observed by CHASE via Machine Learning [PDF]
The Astrophysical JournalStudies on the dynamics of solar filaments have significant implications for understanding their formation, evolution, and eruption, which are of great importance for space weather warning and forecasting.
Z. Zheng +5 more
doaj +4 more sources
Partial Eruption of Solar Filaments. I. Configuration and Formation of Double-decker Filaments [PDF]
The Astrophysical Journal, 2023 Partial eruptions of solar filaments are the typical representatives of solar eruptive behavior diversity. Here we investigate a typical filament partial eruption event and present integrated evidence for the configuration of the pre-eruption filament ...
Yijun Hou +15 more
doaj +2 more sources
SWAYING THREADS OF A SOLAR FILAMENT [PDF]
The Astrophysical Journal, 2009 From recent high resolution observations obtained with the Swedish 1 m Solar Telescope in La Palma, we detect swaying motions of individual filament threads in the plane of the sky. The oscillatory character of these motions are comparable with oscillatory Doppler signals obtained from corresponding filament threads.
Y. Lin +6 more
openalex +4 more sources
Detection of Solar Filaments Using Suncharts from Kodaikanal Solar Observatory Archive Employing a Clustering Approach [PDF]
The Astrophysical Journal, 2023 With over 100 yr of solar observations, the Kodaikanal Solar Observatory (KoSO) is a one-of-a-kind solar data repository in the world. Among its many data catalogs, the “suncharts” at KoSO are of particular interest.
Aditya Priyadarshi +6 more
doaj +2 more sources
Sympathetic Solar Filament Eruptions [PDF]
The Astrophysical Journal Letters, 2016 ABSTRACT The 2015 March 15 coronal mass ejection as one of the two that together drove the largest geomagnetic storm of solar cycle 24 so far was associated with sympathetic filament eruptions. We investigate the relations between the different filaments involved in the eruption.
Rui Wang +5 more
openalex +3 more sources
Where Do Solar Filaments Form? [PDF]
Proceedings of the International Astronomical Union, 2013 AbstractIn the present study, we consider where large, stable solar filaments form relative to underlying magnetic polarities. We find that 92% of all large stable filaments form in magnetic configurations involving the interaction of two or more bipoles. Only 7% form above the Polarity Inversion Line (PIL) of a single bipole. This indicates that a key
Mackay, Duncan H. +2 more
openaire +3 more sources
Solar Filament Eruptions in H α Doppler Velocity [PDF]
The Astrophysical Journal, 2023 We use observations taken with a novel solar telescope spectroheliograph to investigate the association between the early filament rise and coronal mass ejections (CMEs).
I. A. Berezin +2 more
doaj +2 more sources
Horizontal flow below solar filaments [PDF]
Astronomy & Astrophysics, 2018 Context. Observations of the internal fine structures of solar filaments indicate that the threads of filaments follow magnetic field lines. The magnetic field inside the filament has a strong axial component. Some models of magnetic fields suggest that the field structure in filaments could be caused by the horizontal plasma velocity field near both ...
P. Ambrož, W. Pötzi
openaire +2 more sources
Automatic detection and tracking of filaments for a solar feature database [PDF]
Annales Geophysicae, 2008 A new method for the automatic detection and tracking of solar filaments is presented. The method addresses the problems facing existing catalogs, such as the one developed recently in the frame of the European Grid of Solar Observations (EGSO ...
J. Aboudarham +8 more
doaj +3 more sources