Results 21 to 30 of about 4,172 (194)

The source and engine of coronal mass ejections [PDF]

open access: yesPhilosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2019
Coronal mass ejections (CMEs) are large-scale expulsions of coronal plasma and magnetic field propagating through the heliosphere. Because CMEs are observed by white-light coronagraphs which, by design, occult the solar disc, supporting disc observations (e.g. in EUV, soft X-rays, Halpha and radio) must be employed for the study of their source regions
Manolis K. Georgoulis   +2 more
openaire   +2 more sources

Deciphering the Slow-rise Precursor of a Major Coronal Mass Ejection

open access: yesThe Astrophysical Journal Letters, 2023
Coronal mass ejections are explosive plasma phenomena prevalently occurring on the Sun and probably on other magnetically active stars. However, how their pre-eruptive configuration evolves toward the main explosion remains elusive.
X. Cheng   +5 more
doaj   +1 more source

The Inhomogeneity of Composition Along the Magnetic Cloud Axis

open access: yesFrontiers in Physics, 2021
Coronal mass ejections (CMEs) are one of the most energetic explosions in the solar system. It is generally accepted that CMEs result from eruptions of magnetic flux ropes, which are dubbed as magnetic clouds (MCs) in interplanetary space.
Hongqiang Song   +9 more
doaj   +1 more source

Coronal Mass Ejections [PDF]

open access: yesHighlights of Astronomy, 1986
AbstractThis paper gives a brief review of current observation, interpretation and theory of coronal transient mass ejections. Some recent new results are described.
openaire   +1 more source

Coronal Mass Ejections and Coronal Structures [PDF]

open access: yes, 1989
The coronal portion of the solar atmosphere consists of a wide variety of structures which exhibit a similarly wide variety of dynamical processes and kinds of activity. The launch of the SMM presented an opportunity to study the low and intermediate corona from space with multiple instruments for protracted periods of time.
E. Hildner   +20 more
openaire   +1 more source

Coronal dimming as a proxy for stellar coronal mass ejections [PDF]

open access: yesProceedings of the International Astronomical Union, 2019
AbstractSolar coronal dimmings have been observed extensively in the past two decades and are believed to have close association with coronal mass ejections (CMEs). Recent study found that coronal dimming is the only signature that could differentiate powerful flares that have CMEs from those that do not.
M. Jin   +8 more
openaire   +2 more sources

Solar Coronal Mass Ejection and Post–Coronal Mass Ejection Blob Formation in Two-fluid Simulations

open access: yesThe Astrophysical Journal
A coronal mass ejection (CME) and post-CME blob phenomena in the solar atmosphere, associated with shear flow and convergent flow perturbations in the photosphere, are investigated using a resistive two-fluid (electron–ion) code.
J. C. Du, Z. W. Ma
doaj   +1 more source

Effects of coronal mass ejections on distant coronal streamers [PDF]

open access: yesAstronomy Reports, 2014
10 pages, 5 ...
Filippov, B.   +3 more
openaire   +2 more sources

SpartanAnatomy.org: Evaluating a new interactive neuroradiology tool for early medical education

open access: yesAnatomical Sciences Education, EarlyView.
Abstract Teaching neuroanatomy through the lens of magnetic resonance imaging (MRI) offers medical students a strong foundation for success. However, many existing MRI learning resources lack interactivity and user‐friendliness, require payment, or include an overwhelming number of labeled structures.
Halie Kerver   +3 more
wiley   +1 more source

Identifying and Predicting Coronal Mass Ejection Occurrence: Observational Checklists for Space Weather Forecasters

open access: yesSpace Weather
Ejections of magnetized plasma from the Sun, known as coronal mass ejections, can drive major geomagnetic activity if Earth‐directed, and are therefore monitored by space weather forecasters.
L. M. Green   +7 more
doaj   +1 more source

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