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Proper Motion of Solar Filaments [PDF]
Astronomy & Astrophysics, 1999 Precise measurements of heliographic position of solar filaments were used for describing the proper motion of solar filaments on the time-scale of one day. Only the velocity values more accurate than 100 m s−1 were used for the study. The filaments have a tendency to make a shaking or waving of the external structure and also to make a general ...
P. Ambrož, A. Schroll
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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
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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
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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
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SOLAR MAGNETIZED “TORNADOES:” RELATION TO FILAMENTS [PDF]
Astrophysical Journal Letters, 2012 Solar magnetized "tornadoes", a phenomenon discovered in the solar atmosphere, appear as tornado-like structures in the corona but root in the photosphere. Like other solar phenomena, solar tornadoes are a feature of magnetized plasma and therefore differ distinctly from terrestrial tornadoes. Here we report the first analysis of solar "tornadoes" {Two
Yang Su, Astrid M Veronig, M Temmer
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Falling Threads during Solar Filament Eruptions
The Astrophysical JournalMass drainage is frequently observed in solar filaments. During filament eruptions, falling material most likely flows along magnetic field lines, which may provide important clues for the magnetic structures of filaments.
Yidian Wu +3 more
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A dataset of manually annotated filaments from H-alpha observations [PDF]
Scientific DataWe present the Manually Annotated GONG Filaments in H-alpha Observations (MAGFiLO v1.0) dataset. This dataset contains 10,244 annotated filaments from 1,593 observations captured by the Global Oscillation Network Group (GONG), spanning the years 2011 ...
Azim Ahmadzadeh +17 more
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On the Fine Structure of Solar Filaments [PDF]
The Astrophysical Journal, 2006 High-resolution Hα images of solar filaments show a variety of dark fine-structure fibrils, most of them aligned with the magnetic field that is sheared with respect to the filament long axis. Here we demonstrate how such fibrils can be explained in terms of the magnetic field dips produced by realistic mass loading due to plasma condensation along the
Heinzel, P., Anzer, U.
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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.
Lin, Y. +6 more
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Formation of a Long Filament Through the Connection of Two Filament Segments Observed by CHASE
The Astrophysical Journal Letters, 2023 We present imaging and spectroscopic diagnostics of a long filament during its formation with the observations from the Chinese H α Solar Explorer and Solar Dynamics Observatory.
H. T. Li +7 more
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