Results 31 to 40 of about 3,282 (199)

Solar filament eruptions and energetic particle events

The Astrophysical Journal, 1986
The 1981 December 5 solar filament eruption that is associated with an energetic (E greater than 50 MeV) particle event observed at 1 AU. The eruption was photographed in H-alpha and was observed by the Solwind whitelight coronagraph on P78-1. It occurred well away from any solar active region and was not associated with an impulsive microwave burst ...
S. W. Kahler, E. W. Cliver, H. V. Cane, R. E. McGuire, R. G. Stone, N. R., Jr. Sheeley   +5 more
openaire   +1 more source

The role of filament activation in a solar eruption [PDF]

Astronomy & Astrophysics, 2012
Observations show that the mutual relationship between filament eruptions and solar flares cannot be described in terms of an unique scenario. In some cases, the eruption of a filament appears to trigger a flare, while in others the observations are more consistent with magnetic reconnection that produces both the flare observational signatures (e.g ...
da Costa F. Rubio, ZUCCARELLO, Francesca, Fletcher L., Romano P., Labrosse N.   +4 more
openaire   +3 more sources

On the partial eruption of a bifurcated solar filament structure [PDF]

Monthly Notices of the Royal Astronomical Society, 2020
ABSTRACT The partial eruption of a filament channel with bifurcated substructures is investigated using data sets obtained from both ground-based and space-borne facilities. Small-scale flux reconnection/cancellation events in the region triggered the pile-up of ambient magnetic field, observed as bright extreme ultraviolet (EUV) loops ...
Monga, A., Sharma, R., Liu, J., Cid, C., Uddin, W., Chandra, R., Erdelyi, R.   +6 more
openaire   +4 more sources

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

Mechanism of the Failed Eruption of an Intermediate Solar Filament

The Astrophysical Journal, 2022
Abstract Solar filament eruptions can generate coronal mass ejections (CMEs), which are huge threats to space weather. Thus, we need to understand their underlying mechanisms. Although many authors have studied the mechanisms for several decades, we still do not fully understand in what conditions a filament can erupt to become a CME or ...
Zou Peng, Jiang Chaowei, Wang Juntao, Bian Xinkai   +3 more
openaire   +1 more source

Data-constrained Magnetohydrodynamic Simulation of an Intermediate Solar Filament Eruption

The Astrophysical Journal, 2023
Abstract Solar eruptive activities could occur in weak magnetic field environments and over large spatial scales, which are especially relevant to eruptions involving intermediate or quiescent solar filaments. To handle the large scales, we implement and apply a flux rope embedding method using regularized Biot–Savart laws in the ...
Guo, Yang, Guo, Jinhan, Ni, Yiwei, Ding, M.D., Chen, P.F., Xia, Chun, Keppens, Rony, Yang, Kai E.   +7 more
openaire   +4 more sources

Understanding the Lateral Drifting of an Erupting Filament with a Data-constrained Magnetohydrodynamic Simulation

The Astrophysical Journal, 2023
Solar filaments often exhibit rotation and deflection during eruptions, which would significantly affect the geoeffectiveness of the corresponding coronal mass ejections (CMEs).
J. H. Guo, Y. Qiu, Y. W. Ni, Y. Guo, C. Li, Y. H. Gao, B. Schmieder, S. Poedts, P. F. Chen   +8 more
doaj   +1 more source

A Challenging Solar Eruptive Event of 18 November 2003 and the Causes of the 20 November Geomagnetic Superstorm. I. Unusual History of an Eruptive Filament

, 2013
This is the first of four companion papers, which analyze a complex eruptive event of 18 November 2003 in AR 10501 and the causes of the largest Solar Cycle 23 geomagnetic storm on 20 November 2003. Analysis of a complete data set, not considered before,
Chertok, I. M., Filippov, B. P., Grechnev, V. V., Rudenko, G. V., Slemzin, V. A., Temmer, M., Uralov, A. M.   +6 more
core   +1 more source

Relationship between eruptions of active-region filaments and associated flares and CMEs

, 2011
To better understand the dynamical process of active-region filament eruptions and associated flares and CMEs, we carried out a statistical study of 120 events observed by BBSO, TRACE, and t(SOHO/EIT) from 1998 to 2007 and combined filament observations ...
Alexander, Amari, Aulanier, Brueckner, Canfield, Chae, Chifor, Chifor, Cho, D.-F. Kong, Delaboudinière, Domingo, Fan, Fan, Feynman, Fisher, Forbes, Forbes, Gibson, Gilbert, Gilbert, Gopalswamy, Green, Hale, Handy, Harrison, Harrison, Harrison, Harrison, Harrison, Hood, Ji, Jiang, Jiang, Jing, Kilper, Kim, Kliem, Kliem, Leka, Lin, Lin, Liu, Liu, Liu, Low, Low, Moon, Nagashima, Pevtsov, Priest, Romano, Roussev, Rust, Rust, Sakurai, Scherrer, Schrijver, Shibata, Simnett, Steinegger, Sterling, Titov, Tripathi, Török, Török, Wagner, Wang, Wang, Williams, X.-L. Yan, Yang, Yashiro, Yurchyshyn, Z.-Q. Qu, Zhang, Zhang, Zhou   +77 more
core   +1 more source

Automated Detection of Solar Eruptions

, 2015
Observation of the solar atmosphere reveals a wide range of motions, from small scale jets and spicules to global-scale coronal mass ejections. Identifying and characterizing these motions are essential to advancing our understanding the drivers of space
Hurlburt, Neal
core   +2 more sources