Results 51 to 60 of about 1,740 (142)

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

Fast magnetoacoustic waves in a randomly structured solar corona [PDF]

, 2001
The propagation of fast magnetoacoustic waves in a randomly structured solar corona is considered in the linear and cold plasma limits. The random field is assumed to be static and associated with plasma density inhomogeneities only.
Berghmans, Berton, Deforest, E. N. Pelinovsky, Howe, K. Murawski, Karweit, Li, Lou, Moreton, Nakariakov, Ofman, Ofman, Shapiro, Thompson, V. M. Nakariakov, Valley, Valley   +17 more
core   +2 more sources

The Performance of DIXSG on Characterizing Global and Regional Ionospheric Disturbances Utilizing Geodetic Receiver Network‐A Case Study

Space Weather, Volume 23, Issue 10, October 2025.
Abstract As the 25th solar cycle enters a highly active phase, the resulting ionospheric irregularities induce disturbances in signals of Global Navigation Satellite System (GNSS), significantly disrupting its global stable positioning, navigation, and timing services.
Dongsheng Zhao, Xueli Zhang, Peicheng Zhang, Hao Liu, Kefei Zhang, Wang Li, Andong Hu, Longjiang Li, Shuanglei Cui, Yuhao Hou, Craig M. Hancock, Andrzej Krankowski   +11 more
wiley   +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

Characteristics of Large‐Scale Traveling Ionospheric Disturbances During the 10 May 2024 Geomagnetic Storm

Space Weather, Volume 23, Issue 10, October 2025.
Abstract Based on the total electron content (TEC) observation in the Asian‐Australian and American sectors, this paper investigates the characteristics and hemispheric asymmetry of large‐scale traveling ionospheric disturbances (LSTIDs) during the 10 May 2024 superstorm. We found that the amplitudes and meridional phase velocities of LSTIDs in the two
Tingwei Han, Huijun Le, Yuyan Yang, Wenbo Li, Wenjie Sun, Han Ma, Yijia Zhou, Bowei Liu, Rongjin Du, Libo Liu, Yiding Chen, Ruilong Zhang   +11 more
wiley   +1 more source

The Error Estimation of Transverse Coronal Loop Oscillation Parameters Based on Least Chi-squares Fitting

The Astrophysical Journal Supplement Series
Transverse oscillations of coronal loops not only influence coronal dynamics, but also provide a new perspective for coronal detection. To enhance their exploitation and utilization, accurately estimating the oscillation parameters is crucial.
Hongbo Li, Hengqiang Feng, Zhanjun Tian, Qiangwei Cai, Guoqing Zhao, Yan Zhao   +5 more
doaj   +1 more source

The effect of elliptic shape on the period ratio P-1/P-2 of emerging coronal loops [PDF]

, 2009
Aims. We determine the effect of an elliptical shape on the period ratio for the standing transversal oscillations of a longitudinally stratified coronal loop throughout its emergence from the low solar atmosphere into the ubiquitously magnetised corona.
Erdelyi, R., Morton, R.J.
core   +1 more source

Enhanced Global Ionospheric Mapping Using Deep Ensemble Neural Networks With Uncertainty Quantification

Space Weather, Volume 23, Issue 7, July 2025.
Abstract Global ionospheric mapping is essential for ionospheric research. However, conventional approaches often struggle to accurately capture small‐scale ionospheric variations. This study proposes a deep ensemble method based on neural networks (NNs) that generates high‐accuracy global vertical total electron content (VTEC) maps along with ...
Shuyin Mao, Yuanxin Pan, Grzegorz Kłopotek, Matthias Schartner, Hana Krásná, Aletha de Witt, Benedikt Soja   +6 more
wiley   +1 more source

Measuring the Coronal Magnetic Field with 2D Coronal Seismology: A Forward-modeling Validation

The Astrophysical Journal Supplement Series
In recent years, a two-dimensional (2D) coronal seismology technique applied to spectral-imaging data from the Coronal Multi-channel Polarimeter (CoMP) and Upgraded Coronal Multi-channel Polarimeter (UCoMP) has enabled routine measurement of the global ...
Zihao Yang, Matthias Rempel, Sarah Gibson, Giuliana de Toma   +3 more
doaj   +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