Results 61 to 70 of about 600 (183)

Coronal and Chromospheric Dynamics of a Coronal Hole Bright Point

The Astrophysical Journal
Data from the Atmospheric Imaging Assembly (AIA) and the Helioseismic Magnetic Imager on board the Solar Dynamics Observatory and from the Interface Region Imaging Spectograph, are used to study the evolution at different atmospheric layers of a bright ...
Ana Cristina Cadavid, Mari Paz Miralles
doaj   +1 more source

Solar Energetic Particle Prediction in the Inner Heliosphere Using Deep Learning and PSP/IS⊙IS Data

Journal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Solar events, such as coronal mass ejections and solar flares, accelerate large numbers of energetic charged particles, producing solar energetic particle (SEP) events that can harm astronauts, damage satellites, and potentially damage infrastructure on Earth.
Tate Hutchins, Spiridon Kasapis, Hameedullah Farooki, Manuel E. Cuesta, Lengying Khoo, Sungmin Pak, Robert Czarnota, Jamie Rankin, Jamey Szalay, Zigong Xu, Georgios Livadiotis, Nikolaos Sarlis, David McComas   +12 more
wiley   +1 more source

Field-aligned currents are strongly modulated by corotating solar wind high-speed streams

Journal of Space Weather and Space Climate
Birkeland field-aligned currents (FACs) are associated with solar wind-magnetosphere energy coupling leading to substorms/convection events. FAC intensity enhancements have been studied during geomagnetic storms driven by interplanetary coronal mass ...
Hajra Rajkumar, Tsurutani Bruce T., Franco Adriane M. S., Lu Quanming, Du Aimin, Lakhina Gurbax S., Lu San, Gao Xinliang, Echer Ezequiel   +8 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

The Extreme GIC Occurrence During 11 years of Observations in the North‐West of Russia

Space Weather, Volume 24, Issue 5, May 2026.
Abstract For the first time, events with extreme magnitudes of geomagnetically induced currents (GICs) in the power lines during the quasi‐solar cycle (2012–2022) at auroral and subauroral latitudes are analyzed. GIC recordings from auroral Vykhodnoy (Murmansk region) and subauroral Kondopoga (Karelia) sub‐stations together with data from near‐by ...
V. B. Belakhovsky, V. A. Pilipenko, V. N. Selivanov, Ya. A. Sakharov, J. J. Zhang, V. V. Kolobov   +5 more
wiley   +1 more source

Geomagnetic storms and their sources on the sun:the rising phase of the sunspot cycle

Antarctic Record, 2013
Solar phenomena, including solar flares and coronal holes, are considered in the context of a NEWS coordinate system, obtained by application of the heliographic and heliomagnetic coordinate systems to the solar latitude and longitude, respectively.
Takao Saito, Syun-Ichi Akasofu, Shinichi Watari, Natsuo Sato, Hiroaki Misawa   +4 more
doaj   +1 more source

LUCI onboard Lagrange, the next generation of EUV space weather monitoring

Journal of Space Weather and Space Climate, 2020
Lagrange eUv Coronal Imager (LUCI) is a solar imager in the Extreme UltraViolet (EUV) that is being developed as part of the Lagrange mission, a mission designed to be positioned at the L5 Lagrangian point to monitor space weather from its source on the ...
West Matthew J., Kintziger Christian, Haberreiter Margit, Gyo Manfred, Berghmans David, Gissot Samuel, Büchel Valeria, Golub Leon, Shestov Sergei, Davies Jackie A.   +9 more
doaj   +1 more source

Predicting CME Arrivals From L5 Heliospheric Imagers: The Impact of HI Track Length

Space Weather, Volume 24, Issue 5, May 2026.
Abstract The Solar TErrestrial RElations Observatory (STEREO) mission has laid a foundation for advancing real‐time space weather forecasting by enabling the evaluation of heliospheric imager (HI) data for predicting coronal mass ejection (CME) arrivals at Earth.
T. Amerstorfer, J. Le Louëdec, D. Barnes, M. Bauer, J. A. Davies, S. Majumdar, E. Weiler, C. Möstl   +7 more
wiley   +1 more source

Energy and Mass Transport Associated with Impulsive Spicular Flows in Solar Coronal Holes

The Astrophysical Journal Letters
How the solar atmosphere is heated from a temperature of about 5000 to 6000 K in the lower atmosphere to about 1–2 MK in the corona has challenged the astrophysical community for nearly 80 yr.
Lei Ni, Jun Lin, Tanmoy Samanta, Guanchong Cheng, Yifu Wang, Robert Erdélyi   +5 more
doaj   +1 more source

Validating a Non‐Conventional Method for Expansion of Coronal Mass Ejections (CMEs) and Investigating the Evolution of a CME Substructures Using Solar Orbiter and Wind Observations

Space Weather, Volume 24, Issue 5, May 2026.
Abstract We present a validation of our recently proposed non‐conventional method, Constant Acceleration Accounted Perspective (CAAP), for estimating the instantaneous expansion speed of coronal mass ejection (CMEs), even when only single‐point in situ observations are available. This validation is enabled by the radial alignment of Solar Orbiter (SolO)
Anjali Agarwal, Wageesh Mishra, Mathew J. Owens, Tanja Amerstorfer   +3 more
wiley   +1 more source