Results 41 to 50 of about 11,117 (189)

Eruptive and Quasi-Eruptive Disappearing Solar Filaments and Their Relationship with Coronal Activities [PDF]

Publications of the Astronomical Society of Japan, 2003
Abstract By measuring the 3-D velocity fields of 35 disappearing filaments (Disparition Brusques: DBs) on the solar disk, we studied the causal relationship between the motions of $\mathrm{H}\alpha$ DBs and the associated coronal phenomena.
Taro Morimoto, Hiroki Kurokawa
openaire   +1 more source

Sympathetic Filament Eruptions within a Fan-spine Magnetic System [PDF]

Astrophysical Journal, 2021
It is unclear whether successive filament eruptions at different sites within a short time interval are physically connected or not. Here, we present the observations of successive eruptions of a small and a large filament in a tripolar magnetic field ...
Chengrui Zhou, Yuandeng Shen, Xinping Zhou, Zehao Tang, Yadan Duan, Song Tan   +5 more
semanticscholar   +1 more source

A CIRCULAR-RIBBON SOLAR FLARE FOLLOWING AN ASYMMETRIC FILAMENT ERUPTION [PDF]

The Astrophysical Journal, 2015
7 pages, 5 figures, accepted to ApJ ...
Liu, Chang, Deng, Na, Liu, Rui, Lee, Jeongwoo, Pariat, Etienne, Wiegelmann, Thomas, Liu, Yang, Kleint, Lucia, Wang, Haimin   +8 more
openaire   +4 more sources

Observing the release of twist by magnetic reconnection in a solar filament eruption. [PDF]

Nat Commun, 2016
AbstractMagnetic reconnection is a fundamental process of topology change and energy release, taking place in plasmas on the Sun, in space, in astrophysical objects and in the laboratory. However, observational evidence has been relatively rare and typically only partial.
Xue Z, Yan X, Cheng X, Yang L, Su Y, Kliem B, Zhang J, Liu Z, Bi Y, Xiang Y, Yang K, Zhao L.   +11 more
europepmc   +6 more sources

ERUPTION OF A SOLAR FILAMENT CONSISTING OF TWO THREADS

The Astrophysical Journal, 2012
The trigger and driving mechanism for the eruption of a filament consisting of two dark threads was studied with unprecedented high cadence and resolution of He II 304 angstrom observations made by the Atmospheric Imagining Assembly (AIA) on board the Solar Dynamics Observatory (SDO) and the observations made by the Solar Magnetic Activity Research ...
Yi Bi, Yunchun Jiang, Haidong Li, Junchao Hong, Ruisheng Zheng   +4 more
openaire   +1 more source

Small-scale motions in solar filaments as the precursors of eruptions [PDF]

Publications of the Astronomical Society of Japan, 2019
Abstract Filaments, the dense cooler plasma floating in the solar corona supported by magnetic fields, generally exhibit certain activations before they erupt. In our previous study (Seki et al. 2017, ApJ, 843, L24), we observed that the standard deviation of the line-of-sight (LOS) velocities of the small-scale motions in a filament ...
Seki, Daikichi, Otsuji, Kenichi, Isobe, Hiroaki, Ishii, Takako T., Ichimoto, Kiyoshi, Shibata, Kazunari   +5 more
openaire   +2 more sources

Filament eruptions and the impulsive phase of solar flares

The Astrophysical Journal, 1988
Filament motion during the onset of the solar flare impulsive phase is examined. The impulsive phase onset is established from profiles of about 30 keV X-ray fluxes and the rapid flare brightenings characteristic of the H-alpha flash phase. The filament motion begins several minutes before the impulsive or flash phase of the flare.
S. W. Kahler, R. L. Moore, S. R. Kane, H. Zirin   +3 more
openaire   +1 more source

Imaging and spectroscopic observations of a confined solar filament eruption with two-stage evolution [PDF]

Monthly notices of the Royal Astronomical Society
Solar filament eruptions are often characterized by stepwise evolution due to the involvement of multiple mechanisms, such as magnetohydrodynamic instabilities and magnetic reconnection.
Zhe Xu, Xiaoli Yan, Liheng Yang, Z. Xue, Jincheng Wang, Yian Zhou   +5 more
semanticscholar   +1 more source

Hinode Observations of the Onset Stage of a Solar Filament Eruption [PDF]

Publications of the Astronomical Society of Japan, 2007
Abstract We used Hinode X-Ray Telescope (XRT) and Solar Optical Telescope (SOT) filtergraph (FG) Stokes-V magnetogram observations, to study the early onset of a solar eruption that includes an erupting filament that we observe in TRACE EUV images.
Alphonse C. Sterling, Ronald L. Moore, Thomas E. Berger, Monica Bobra, John M. Davis, Patricia Jibben, Ryohei Kano, Loraine L. Lundquist, D. Myers, Noriyuki Narukage, Taro Sakao, Kiyoto Shibasaki, Richard A. Shine, Theodore D. Tarbell, Mark Weber   +14 more
openaire   +1 more source

Plasma Brightenings in a Failed Solar Filament Eruption

The Astrophysical Journal, 2017
Abstract Failed filament eruptions are solar eruptions that are not associated with coronal mass ejections. In a failed filament eruption, the filament materials usually show some ascending and falling motions as well as generating bright EUV emissions.
Y. Li, M. D. Ding
openaire   +2 more sources