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Solar Filament Eruptions in H α Doppler Velocity

Berezin, I. A. ; Tlatov, A. G. ; Pevtsov, A. A.

The Astrophysical journal, 2023-06, Vol.950 (2), p.100 [Revista revisada por pares]

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Título:
Solar Filament Eruptions in H α Doppler Velocity
Autor: Berezin, I. A. ; Tlatov, A. G. ; Pevtsov, A. A.
Materias: Astronomical instrumentation ; Solar filament eruptions ; Solar filaments ; Solar instruments
Es parte de: The Astrophysical journal, 2023-06, Vol.950 (2), p.100
Notas: AAS44887
The Sun and the Heliosphere
Descripción: Abstract We use observations taken with a novel solar telescope spectroheliograph to investigate the association between the early filament rise and coronal mass ejections (CMEs). The instrument allows the H α full line profile to be registered in each pixel of the solar disk with a time cadence of about 1 minute. We analyze observations of three eruptive filaments in 2021 and show that patrol telescope measurements of the H α line profile with a spectral resolution R = 40,000 can be used to detect precursors of filament eruptions with an advance of several hours and to estimate the initial acceleration of CMEs. Our limited case study also suggests that while detecting an early filament rise may serve as an indicator of a possible eruption, the filament ascent alone is not a definite sign of a CME.
Editor: The American Astronomical Society
Idioma: Inglés

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