Results 61 to 70 of about 237 (168)

Large-scale Globally Propagating Coronal Waves

Living Reviews in Solar Physics, 2015
Large-scale, globally propagating wave-like disturbances have been observed in the solar chromosphere and by inference in the corona since the 1960s. However, detailed analysis of these phenomena has only been conducted since the late 1990s.
Alexander Warmuth
doaj   +1 more source

Muon Flux Fluctuations and Solar Phenomena Using Regional Geomagnetic Indices With a Cosmic Ray Detector in Mexico City

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract The data from a cosmic ray (CR) detector in Mexico City were collected over a period of 2 years from September 2023 to September 2025, during the maximum phase of Solar Cycle 25. The CR detector consists of an array of scintillators and measures the muonic component of secondary CRs.
D. Martínez‐Montiel, L. Serkin, G. Paić, J. O. Guerra‐Pulido, L. X. González   +4 more
wiley   +1 more source

The Origin of Energetic Solar Protons: Comparative Analysis of Ground-level Enhancement (GLE) Events and Non-GLE Solar Energetic Particle Events

The Astrophysical Journal Supplement Series
This study explores the acceleration origins of solar energetic particles (SEPs) by analyzing the energy spectral characteristics of particles in ground-level enhancement (GLE) events and common SEP (non-GLE) events, as well as the correlations of the ...
Yue Li, Caolong Xu, Yang Wang, Yushui Zhong, Gang Qin, Zhao Wu   +5 more
doaj   +1 more source

Magnetic Reconnection Ion Outflows Observed at the Dayside Magnetopause: Observation‐Model Comparison and Influence of Solar Wind Structures

Journal of Geophysical Research: Space Physics, Volume 131, Issue 7, July 2026.
Abstract Magnetic reconnection is a fundamental process in magnetized plasmas that accelerates charged particles at the expense of magnetic energy. This study examines 122 dayside magnetopause crossing events characterized by accelerated ion plasma flows consistent with magnetic reconnection.
D. S. F. Medeiros, V. M. Souza, C. Wang, L. E. A. Vieira, W. Gonzalez, H. Li, Z. Liu   +6 more
wiley   +1 more source

Radio Signature of the Strong Compression between a Streamer and a Coronal Hole Boundary

The Astrophysical Journal Letters
We present evidence of the first detection of the radio signature at metric wavelengths of the strong compression between a helmet streamer (HS) and the boundary of a coronal hole (CH) using radio observations from the Callisto MEXICO-LANCE and ALASKA ...
E. Aguilar-Rodriguez, A. Vourlidas, P. Corona-Romero, C. Monstein, W. D. Reeve, E. Romero-Hernandez, E. Andrade-Mascote, P. Villanueva-Hernandez, I. A. Peralta-Mendoza, J. E. Perez-Leon, E. Perez-Tijerina   +10 more
doaj   +1 more source

Estimating the Geomagnetically Induced Currents in the 1,000 kV Power Grid Over North China During the May 2024 Geomagnetic Storm: Accounting for Anisotropic Earth Conductivity

Space Weather, Volume 24, Issue 7, July 2026.
Abstract Geomagnetically induced currents (GICs) pose a significant threat to the safe and stable operation of power systems, making accurate risk assessment under extreme geomagnetic storm conditions essential. This study focuses on the mid‐latitude North China power grid and estimates substation GICs in the 1,000 kV network during the geomagnetic ...
Xuejian Zhang, Gilbert Pi, Tianqi Wang, Wenxin Kong, Ye Fan, Zdeněk Němeček, Jana Šafránková, Fagen Pei, Nian Yu   +8 more
wiley   +1 more source

Estimating the lateral speed of a fast shock driven by a coronal mass ejection at the location of solar radio emissions

Astronomy & Astrophysics
Context. Fast coronal mass ejections (CMEs) can drive shock waves capable of accelerating electrons to high energies. These shock-accelerated electrons act as sources of electromagnetic radiation, often in the form of solar radio bursts. Recent findings suggest that radio imaging of solar radio bursts can provide a means to estimate the lateral ...
S. Normo, D. E. Morosan, E. K. J. Kilpua, J. Pomoell   +3 more
openaire   +3 more sources

The interplanetary causes of geomagnetic activity during the 7–17 March 2012 interval: a CAWSES II overview

Journal of Space Weather and Space Climate, 2014
This overview paper presents/discusses the major solar, interplanetary, magnetospheric, and ionospheric features of the CAWSES II interval of study: 7–17 March 2012. Magnetic storms occurred on 7, 9, 12, and 15 March with peak SYM-H intensities of −98 nT,
Tsurutani Bruce T., Echer Ezequiel, Shibata Kazunari, Verkhoglyadova Olga P., Mannucci Anthony J., Gonzalez Walter D., Kozyra Janet U., Pätzold Martin   +7 more
doaj   +1 more source

A Model for Recommending Historical Similar Events in Forecasting CME Geoeffectiveness

Space Weather, Volume 24, Issue 7, July 2026.
Abstract Coronal mass ejections (CMEs) are among the key solar eruptive activities, triggering space weather disturbances. Thus, forecasting their geoeffectiveness has become a research focus. This study constructs a model to recommend similar events for forecasting the geoeffectiveness of CMEs.
Yurong Shi, Bingxian Luo, Jingjing Wang, Yanhong Chen, Siqing Liu   +4 more
wiley   +1 more source

Statistical Analysis of Jump in Solar Wind Plasma Parameter and Coronal Mass Ejections with Shock Related Geomagnetic Storm

, 2019
Coronal Mass Ejections (CMEs) are the drastic solar events in which huge amount of solar plasma materials are ejected into the heliosphere from the sun and are mainly responsible to generate large disturbances in solar wind plasma parameters and geomagnetic storms in the geomagnetic field.
Preetam Singh Gour, Shiva Soni
openaire   +2 more sources