Results 111 to 120 of about 6,461 (252)

Narrow Coronal Mass Ejections

open access: yesThe Astrophysical Journal, 2001
Narrow coronal mass ejections (CMEs), defined arbitrarily as events whose apparent angular width is 15° or less, are a small subset of all CMEs. Little is known of the properties of these events and whether these properties differ from those of the larger, more typical CMEs. We have included in this study 15 narrow CMEs observed in the period from 1999
Holly R. Gilbert   +4 more
openaire   +1 more source

Machine Learning for Local Detection of Separators in Three‐Dimensional Magnetic Fields

open access: yesJournal of Geophysical Research: Machine Learning and Computation, Volume 3, Issue 3, June 2026.
Abstract Magnetic reconnection is a major plasma phenomenon occurring in various key environments ranging from the Sun and near‐Earth space to astrophysical plasmas. While magnetic reconnection is relatively well‐understood under two‐dimensional (2D) settings, it remains challenging to characterize in three‐dimensional (3D) magnetic fields.
Fanni Franssila   +5 more
wiley   +1 more source

Flux rope formation preceding coronal mass ejection onset

open access: yes, 2009
We analyze the evolution of a sigmoidal (S-shaped) active region toward eruption, which includes a coronal mass ejection (CME) but leaves part of the filament in place.
Green, Lucie M., Kliem, Bernhard (Dr.)
core   +1 more source

On the Detection of Low‐Frequency Planetary Radio Emission With an Orbiting Interferometer

open access: yesRadio Science, Volume 61, Issue 6, June 2026.
Abstract The magnetized planets of the outer Solar System produce kilometric radio emissions at very low frequencies (<1 ${< } 1\,$MHz). They reveal the planetary magnetic dynamics and their interaction with the solar wind. Those radio emissions can also serve as a proxy for interplanetary space weather monitoring.
E. Rouillé   +4 more
wiley   +1 more source

Coronal Mass Ejection early-warning mission by solar-photon sailcraft

open access: yes, 2017
A preliminary investigation of the early warning of solar storms caused by Coronal Mass Ejection has been carried out. A long warning time could be obtained with a sailcraft synchronous with the Earth-Moon barycenter, and stationed well below the L1 ...
Pino T., Vulpetti G., Circi C.
core   +1 more source

Modeling Polarized Radio Sounding Observations of a Coronal Mass Ejection

open access: yesThe Astrophysical Journal
Coronal mass ejections (CMEs) evolve significantly as they propagate from the Sun to the Earth, so remote observations of their changes in speed, strength of the magnetic field, density, and overall structure are critical for predicting their arrival ...
Elizabeth A. Jensen   +7 more
doaj   +1 more source

Identifying Coronal Mass Ejection Active Region Sources: An Automated Approach

open access: yesThe Astrophysical Journal
Identifying the source regions of coronal mass ejections (CMEs) is crucial for understanding their origins and improving space weather forecasting. We present an automated algorithm for matching CMEs detected by the Large Angle Spectrometric Coronagraph ...
Julio Hernandez Camero   +2 more
doaj   +1 more source

Space Weather Effects From Moderate to Severe Geomagnetic Storms in October 2024 Over the Latin American Sector

open access: yesSpace Weather, Volume 24, Issue 6, June 2026.
Abstract This study presents a detailed case study of the ionospheric impacts of moderate (G2) and severe (G4) geomagnetic storms over the Latin American sector, with particular emphasis on the formation and suppression of equatorial plasma bubbles (EPBs).
C. S. Carmo   +13 more
wiley   +1 more source

The New CORIMP Coronal Mass Ejection Catalog

open access: yes, 2014
Automatically Detecting & Tracking Solar Coronal Mass Ejections in Coronagraph ...
Peter Gallagher (99110)   +3 more
core   +1 more source

Validating SCUBAS Predictions of Geomagnetically Induced Voltage in Submarine Cables Using Legacy Superstorm Observations

open access: yesSpace Weather, Volume 24, Issue 6, June 2026.
Abstract Modern submarine communication cables, though fiber‐optic in nature, remain vulnerable to space weather hazards due to their internal conductive cables used for powering repeaters. During geomagnetic storms, variations in the geomagnetic field induce geoelectric fields that drive geomagnetically induced voltages along these cables.
S. Chakraborty   +7 more
wiley   +1 more source

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