Results 71 to 80 of about 3,282 (199)

Short Term Topological Changes of Coronal Holes Associated with Prominence Eruptions and Subsequent CMEs

, 2012
We study the short--term topological changes of equatorial and polar coronal hole (CH) boundaries, such as a variation of their area and disintegration, associated to reconnection with nearby (within 15$^\circ$ distance) quiescent prominence magnetic ...
Gutiérrez, H., Mouradian, Z., Taliashvili, L.   +2 more
core   +3 more sources

Predicting Solar Filament Eruptions With Hek Filament Metadata

, 2015
Solar filaments are cool, dark channels of partially-ionized plasma that lie above the chromosphere. Their structure follows the neutral line between local regions of opposite magnetic polarity. Previous research (e.g. Schmieder et al. 2013) has shown a positive correlation (80%) between the occurrence of filament eruptions and coronal mass ejections ...
openaire   +1 more source

Statistical Study of Confined Filament/Prominence Eruptions during Solar Cycle 23

Proceedings of the Bulgarian Academy of Sciences, 2023
Filament/prominence eruptions can have a significant impact on Earth's upper atmosphere and space environment, and are the primary drivers of what is now called space weather. To distinguish the different types of filament eruptions we statistically examine them during the 23rd Solar cycle.
Khaled, Safinaz, A, Damé, Luc, Shimeis, Amira, Yousef, Shahinaz, Semeida, Mohamed, A, Amin, Magdy, Y, Ghitas, Ahmed, Stoeva, Penka, Stoev, Alexey   +8 more
openaire   +3 more sources

Forecasting Coronal Mass Ejections Using Transformers: A Comparative Study of Flare‐Associated Versus Flare‐Independent Approaches

Space Weather, Volume 23, Issue 8, August 2025.
Abstract Forecasting coronal mass ejections (CMEs) remains a challenge, and no reliable, accurate forecasting method has yet been developed. Knowing that CMEs can occur in association with flares, we compare two approaches: (a) forecasting CMEs by coupling to flare forecasting, and (b) forecasting CMEs independently of flare occurrence.
Julio Hernandez Camero, Lucie M. Green
wiley   +1 more source

Can a Major Geomagnetic and Auroral Disturbance Originate From a Solar Active Region Close to the Limb?

Space Weather, Volume 23, Issue 8, August 2025.
Abstract When forecasting major geomagnetic storms, it is commonly assumed that coronal eruptions near the solar limb are not of concern. We here discuss two sequences of events: the Fátima storms of January 1938 and the Halloween storms of October/November 2003.
Mike Lockwood, Mat J. Owens, Luke A. Barnard, William Brown, Dechen Gyeltshen   +4 more
wiley   +1 more source

Plasmoids, Flows, and Jets during Magnetic Reconnection in a Failed Solar Eruption

The Astrophysical Journal, 2023
We report a detailed analysis of a failed eruption and flare in active region 12018 on 2014 April 3 using multiwavelength observations from the Solar Dynamics Observatory/Atmospheric Imaging Assembly, IRIS, STEREO, and Hinode/Solar Optical Telescope.
Pankaj Kumar, Judith T. Karpen, Spiro K. Antiochos, C. Richard DeVore, Peter F. Wyper, Kyung-Suk Cho   +5 more
doaj   +1 more source

Is flux rope a necessary condition for the progenitor of coronal mass ejections?

, 2015
A magnetic flux rope structure is believed to exist in most coronal mass ejections (CMEs). However, it has been long debated whether the flux rope exists before eruption or is formed during eruption via magnetic reconnection.
Chen, P. F., Ouyang, Y., Yang, K.
core   +1 more source

Splitting and Eruption of an Active Region Filament Caused by Magnetic Reconnection

The Astrophysical Journal
To gain a deeper understanding of the intricate process of filament eruption, we present a case study of a filament splitting and erupting by using multiwavelength data of the Solar Dynamics Observatory. It is found that the magnetic reconnection between
Defang Kong, Jincheng Wang, Genmei Pan
doaj   +1 more source

Filament Activation in Response to Magnetic Flux Emergence and Cancellation in Filament Channels

, 2015
We make a comparative analysis for two filaments that showed quite different activation in response to the flux emergence within the filament channels. The observations from the Solar Dynamics Observatory (SDO) and Global Oscillation Network Group (GONG)
Ji, Haisheng, Li, Ting, Zhang, Jun
core   +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