Results 41 to 50 of about 1,743 (137)

3D reconstruction of coronal loops by the principal component analysis [PDF]

, 2013
Knowing the three dimensional structure of plasma filaments in the uppermost part of the solar atmosphere, known as coronal loops, and especially their length, is an important parameter in the wave-based diagnostics of this part of the Sun.
Aschwanden, Erwin Verwichte, Giuseppe Nisticò, Johnson, Jolliffe, Sonnerup, Valery Nakariakov   +6 more
core   +2 more sources

Analysis of Ionospheric Disturbances Near 120°E in the Asia‐Pacific Sector During the May 2024 Superstorm Using Multi‐Instrument Observations

Space Weather, Volume 24, Issue 2, February 2026.
Abstract On 10 May 2024, a severe G5 geomagnetic storm—the most intense of solar cycle 25—significantly disturbed the global ionosphere. This study presents a comprehensive analysis using multi‐instrument observations, including ground‐based measurements from BDS‐GEO total electron content (TEC), digital ionosondes, and magnetometers; model outputs ...
Yue Sun, Jun Tang, Hanyang Teng, Chaoqian Xu, Liang Zhang   +4 more
wiley   +1 more source

On the Existence of Long-period Decayless Oscillations in Short Active Region Loops

The Astrophysical Journal
Decayless kink oscillations, characterized by their lack of decay in amplitude, have been detected in coronal loops of varying scales in active regions, the quiet Sun, and coronal holes. Short-period (
Arpit Kumar Shrivastav, Vaibhav Pant, Rohan Kumar, David Berghmans, Tom Van Doorsselaere, Dipankar Banerjee, Elena Petrova, Daye Lim   +7 more
doaj   +1 more source

The modeling of quasi-periodic oscillations propagation in the solar corona

Современная наука и инновации
In the general problem of oscillations observed in the solar corona, a particularly intriguing position is occupied by quasi-periodic oscillations, which are often observed in coronal holes.
N. K. Shividov, A. K. Baltykov, T. V. Velegurin, G. A. Mankaeva, B. B. Mikhalyaev   +4 more
doaj   +1 more source

Standing Slow-Mode Waves in Hot Coronal Loops: Observations, Modeling, and Coronal Seismology

, 2010
Strongly damped Doppler shift oscillations are observed frequently associated with flarelike events in hot coronal loops. In this paper, a review of the observed properties and the theoretical modeling is presented.
Wang, Tongjiang
core   +1 more source

Impacts of Space Weather‐Induced Satellite Navigation Errors on UAV Path Planning and Energy Consumption

Space Weather, Volume 24, Issue 1, January 2026.
Abstract Space weather disturbances can degrade satellite navigation accuracy, posing operational challenges for Unmanned Aerial Vehicle (UAV) missions that require precise path planning. This study investigates the impact of space weather‐induced horizontal navigation errors on UAV flight distance and energy consumption through a simulation‐based ...
Dabin Xue, Xinding Zhou, Ligang Yuan, Zhizhao Liu, Qing‐He Zhang, Xueshang Feng   +5 more
wiley   +1 more source

Nonlinear Wave Damping by Kelvin–Helmholtz Instability-induced Turbulence

The Astrophysical Journal
Magnetohydrodynamic kink waves naturally form as a consequence of perturbations to a structured medium, for example, transverse oscillations of coronal loops. Linear theory has provided many insights into the evolution of linear oscillations, and results
Andrew Hillier, Iñigo Arregui, Takeshi Matsumoto   +2 more
doaj   +1 more source

Advances in Observing Various Coronal EUV Waves in the SDO Era and Their Seismological Applications (Invited Review)

, 2014
Global extreme ultraviolet (EUV) waves are spectacular traveling disturbances in the solar corona associated with energetic eruptions such as coronal mass ejections (CMEs) and flares.
Liu, Wei, Ofman, Leon
core   +1 more source

FHD: An Extended Disturbance Storm‐Time Index Based on Fitted Functions of Horizontal Geomagnetic Field Variation

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract The significant decrease in the global horizontal geomagnetic field is a key indicator of global magnetic storms and serves as the fundamental basis for deriving traditional disturbance storm‐time indices in space weather monitoring. The disturbance intensity varies across regions and with magnetic local time, highlighting the need for more ...
Zhaobo He, Liguo Jiao, Gaochuan Liu, Xiaoyu Shen, Jiyao Tu, Weinan Wang, Kunjie Sun   +6 more
wiley   +1 more source

Transverse, Propagating Velocity Perturbations in Solar Coronal Loops

, 2015
This short review paper gives an overview of recently observed transverse, propagating velocity perturbations in coronal loops. These ubiquitous perturbations are observed to undergo strong damping as they propagate.
De Moortel, I., Hood, A. W., Pascoe, D. J., Wright, A. N.   +3 more
core   +1 more source