Results 81 to 90 of about 1,542 (192)

The Structure of Solar Coronal Mass Ejections in the Extreme-ultraviolet Passbands

The Astrophysical Journal, 2019
Abstract So far, most studies on the structure of coronal mass ejections (CMEs) are conducted through white-light coronagraphs, demonstrating that about one third of CMEs exhibit the typical three-part structure in the high corona (e.g., beyond 2 ), i.e., the bright front ...
H. Q. Song, J. Zhang, L. P. Li, Y. D. Liu, B. Zhu, B. Wang, R. S. Zheng, Y. Chen   +7 more
openaire   +2 more sources

Spatial Relationship between CMEs and Prominence Eruptions during SC 24 and SC 25

The Astrophysical Journal
During their propagation, coronal mass ejections (CMEs) and prominences sometimes display a nonradial motion. During the years after the solar minimum, the CME central position angle tended to be offset closer to the equator compared to that of the ...
Kostadinka Koleva, Nat Gopalswamy, Pooja Devi, Seiji Yashiro, Grzegorz Michalek   +4 more
doaj   +1 more source

Solar flares, coronal mass ejections and solar energetic particle event characteristics

Journal of Space Weather and Space Climate, 2016
A new catalogue of 314 solar energetic particle (SEP) events extending over a large time span from 1984 to 2013 has been compiled. The properties as well as the associations of these SEP events with their parent solar sources have been thoroughly ...
Papaioannou Athanasios, Sandberg Ingmar, Anastasiadis Anastasios, Kouloumvakos Athanasios, Georgoulis Manolis K., Tziotziou Kostas, Tsiropoula Georgia, Jiggens Piers, Hilgers Alain   +8 more
doaj   +1 more source

Multi‐Wavelength Transformer‐Based 24‐Hour Solar Flare Forecasting at the Active‐Region Level

Space Weather, Volume 24, Issue 6, June 2026.
Abstract Solar flare forecasting remains challenging due to the complex spatiotemporal evolution of solar active regions (ARs) and the severe class imbalance associated with high‐impact events. In this work, we investigate a transformer‐based framework for active‐region–level solar flare forecasting using short sequences of multi‐wavelength ...
Dunia Alatoom, Nikos Nikolaou
wiley   +1 more source

Investigating Potential Benefits of Future Sub‐L1 Missions With STEREO‐A

Space Weather, Volume 24, Issue 6, June 2026.
Abstract We present the first statistical study of geomagnetic storm forecasting using in situ data from the STEREO‐A spacecraft as a sub‐L1 monitor. Between November 2022 and June 2024, STEREO‐A crossed the Sun–Earth line, covering longitudinal and radial separations of ±15° $\pm 15{}^{\circ}$ from the Sun–Earth line and 0.01–0.06 au from Earth.
E. Weiler, E. E. Davies, C. Möstl, N. Lugaz, A. Veronig, R. L. Bailey, M. A. Reiss   +6 more
wiley   +1 more source

Cospatial Multiwavelength Observations of an Eruptive Prominence as the Bright Core of a Coronal Mass Ejection

The Astrophysical Journal Letters
Coronal mass ejections (CMEs), as seen in white-light (WL) coronagraphs, often exhibit a classic three-part structure consisting of a bright front, a dark cavity, and a bright core.
Bin Zhuang, Tingyu Gou, Noé Lugaz, Manuela Temmer, Brian E. Wood, Yara De Leo, Shaheda Begum Shaik, Phillip Hess, Carlos R. Braga, Cecilia Mac Cormack, Xiaolei Li   +10 more
doaj   +1 more source

An HHT–ANN Framework for Short‐Term Kp Forecasting

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The geomagnetic activity index Kp is an important indicator of solar wind–magnetosphere coupling, and accurate 3‐hr‐ahead forecasting is important for space‐weather monitoring and warning. Because upstream solar wind and interplanetary magnetic field (IMF) signals are strongly nonlinear and nonstationary, methods based only on conventional ...
P. Yang, H. S. Fu, H. Lan, C. X. Du, W. D. Fu, J. B. Cao   +5 more
wiley   +1 more source

Direct Evidence of the Hybrid Nature of Extreme-ultraviolet Waves and the Reflection of the Fast-mode Wave

The Astrophysical Journal
We performed an analysis of the extreme-ultraviolet (EUV) wave event on 2022 March 31. The event originated from active region (AR) 12975 located at N13W52 in the field of view of the Atmospheric imaging Assembly (AIA) and exactly at the west limb viewed
Ramesh Chandra, P. F. Chen, Pooja Devi
doaj   +1 more source

Automated detection of solar eruptions

Journal of Space Weather and Space Climate, 2015
Observation of the solar atmosphere reveals a wide range of motions, from small scale jets and spicules to global-scale coronal mass ejections (CMEs).
Hurlburt N.
doaj   +1 more source

Space Weather Disrupts Low‐Latitude Network RTK: Evidence From LSTIDs During June 2025 Geomagnetic Storm

Space Weather, Volume 24, Issue 6, June 2026.
Abstract The geomagnetic storm on 1 June 2025 generated pronounced large‐scale traveling ionospheric disturbances (LSTIDs) over China, captured by dense GNSS networks. It has been unclear whether network real‐time kinematic (NRTK) positioning, which relies on spatial interpolation from multiple reference stations, remains effective under such extreme ...
Tong Liu, Jianghe Chen, Wenfeng Nie, Zhibin Yu, Rui Song, Wu Chen, Pan Xiong, Tianhe Xu, Bo Chen   +8 more
wiley   +1 more source