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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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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Two Events with Spectacular Moving Structures in a Failed Solar Filament Eruption
The Astrophysical JournalWe investigate the complex magnetic reconnection process between the filament and surrounding loops during the failed filament eruption that occurred in NOAA active region 13445 on 2023 September 24, using extreme-ultraviolet observations from the Solar ...
Yudi Ou +14 more
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Polar Filaments Capture High-latitude Solar Poloidal Field Interactions and Can Foretell the Future Sunspot Cycle Amplitude before Polar Field Precursors [PDF]
The Astrophysical Journal LettersPolar fields at the minimum of a sunspot cycle—which are a manifestation of the radial component of the Sun’s poloidal field—are deemed to be the best indicator of the strength of the toroidal component and hence, the amplitude of the future sunspot ...
Srinjana Routh +5 more
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Observational Evidence Supporting Cross‐Field Diffusion of Neutral Material in Solar Filaments [PDF]
, 2007 H. R. Gilbert +2 more
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A New Comprehensive Data Set of Solar Filaments of 100 yr Interval. I. [PDF]
Astrophysical Journal Supplement Series, 2020 Filaments are very common physical phenomena on the Sun and are often taken as important proxies of solar magnetic activities. The study of filaments has become a hot topic in the space weather research.
G. Lin +14 more
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Solar Cycle Evolution of Filaments over a Century: Investigations with the Meudon and McIntosh Hand-drawn Archives [PDF]
Astrophysical Journal, 2021 Hand-drawn synoptic maps from the Meudon Observatory (1919 onwards) and the McIntosh archive (1967 onwards) are two important sources of long-term, manually recorded filament observations.
R. Mazumder +3 more
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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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Diagnostic potential of the Ca II 8542 Å line for solar filaments [PDF]
Astronomy & Astrophysics, 2019 Aims. In this study we explore the diagnostic potential of the chromospheric Ca II line at 8542 Å for studying the magnetic and dynamic properties of solar filaments.
C. J. Díaz Baso +3 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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