Results 91 to 100 of about 260,299 (222)

Risk Assessment of the Ground Magnetic Response to the March and April 2023 Geomagnetic Storms Using Geomagnetically Induced Currents Indices

Space Weather, Volume 23, Issue 4, April 2025.
Abstract We analyzed the solar origin and ground response during the severe geomagnetic storms (GSs) of 23–24 March (GS1) and 23–24 April 2023 (GS2) using Geomagnetically Induced Currents Indices (GIC indices) computed from geomagnetic field data. The GSs were initiated by erupting filaments and associated slow (fast) halo coronal mass ejections on 20 ...
Paul O. Amaechi, Honore Messanga, Frank O. Grodji, Andrew Akala, Irina Despirak, Chigomezyo M. Ngwira, Elijah Oyeyemi, Christine Amory‐Mazaudier   +7 more
wiley   +1 more source

Distortion of the interplanetary magnetic field by three‐dimensional propagation of coronal mass ejections in a structured solar wind [PDF]

, 1999
D. Odstrčil, V. J. Pizzo
openalex   +1 more source

Observation of O+ Characteristics During the Terrestrial Alfvén Wing State Induced by the April 2023 Coronal Mass Ejection

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract We report Magnetospheric Multiscale observations of oxygen ions (O+) during a coronal mass ejection (CME) in April 2023 when the solar wind was sub‐Alfvénic and Alfvén wings formed. For the first time, O+ characteristics are studied at the contact region between the unshocked solar wind and the magnetosphere.
Haoming Liang, Li‐Jen Chen, Stephen A. Fuselier, Roman G. Gomez, Brandon Burkholder, Naoki Bessho, Harsha Gurram, Rachel C. Rice, Jason Shuster, Akhtar S. Ardakani   +9 more
wiley   +1 more source

The Role of Magnetic Skeleton in Solar Flare Filaments Activity

The Astrophysical Journal
We report an M9.3 flare and filaments activities from NOAA Active Region 11261 that are strongly modulated by the 3D magnetic skeleton. Magnetic field extrapolation from the vector magnetic field suggests complex magnetic connectivity and the existence ...
Juan Guo, Huaning Wang, Jingxiu Wang, Xiaoshuai Zhu, Jing Huang, Shanqiang Chen, Bingxian Luo, Siqing Liu, Yuanyong Deng, Jiaben Lin   +9 more
doaj   +1 more source

Magnetic Shear and Cross‐Field Currents: Roles in the Evolution of the Pre–Coronal Mass Ejection Corona [PDF]

, 1999
Richard Wolfson, Bongani Dlamini
openalex   +1 more source

Comparison of Solar Energetic Particle Flux Measurements by CRaTER and GOES

Space Weather, Volume 23, Issue 4, April 2025.
Abstract The Cosmic Ray Telescope for the Effects of Radiation (CRaTER) aboard the Lunar Reconnaissance Orbiter spacecraft has been operating in lunar orbit since 2009. CRaTER data provide a long‐term record of the near‐Moon radiation environment that is relevant to human exploration.
C. Zeitlin, A. S. Johnson, N. A. Schwadron, H. E. Spence, J. Wilson, A. W. Case, K. T. Lee, M. D. Looper, J. E. Mazur   +8 more
wiley   +1 more source

Observing Solar Coronal Mass Ejections from Space [PDF]

arXiv
In this contribution to the panel discussion of the IAU Symposium 388 "Solar and Stellar Coronal Mass Ejections", I concentrate on white-light observations of solar coronal mass ejections (CMEs) from space and specifically address the following aspects: i) history of observations, ii) available catalogs of CMEs, iii) achievements of space observations ...
arxiv  

"EIT Waves" and Coronal Mass Ejections [PDF]

arXiv, 2011
Coronal "EIT waves" appear as EUV bright fronts propagating across a significant part of the solar disk. The intriguing phenomenon provoked continuing debates on their nature and their relation with coronal mass ejections (CMEs). In this paper, we first summarize all the observational features of "EIT waves", which should be accounted for by any ...
arxiv  

Magnetic noise bursts near the interplanetary shock associated with the coronal mass ejection event on February 21, 1994: The Geotail observations [PDF]

, 1998
Yongliang Zhang, H. Matsumoto
openalex   +1 more source

Nowcasting Solar Energetic Particle Events for Mars Missions

Space Weather, Volume 23, Issue 4, April 2025.
Abstract In addition to the omnipresent Galactic Cosmic Rays, sudden Solar Energetic Particle (SEP) events present considerable health hazards for manned space missions. These events not only contribute to an increased long‐term cancer risk, but can, in extreme cases, cause acute radiation syndromes.
Jan Leo Löwe, Salman Khaksarighiri, Robert F. Wimmer‐Schweingruber, Donald M. Hassler, Bent Ehresmann, Jingnan Guo, Günther Reitz, Thomas Berger, Daniel Matthiä, Cary Zeitlin, Sven Löffler   +10 more
wiley   +1 more source