Results 21 to 30 of about 22,597 (264)

Coronal Mass Ejections: Observations [PDF]

open access: yesLiving Reviews in Solar Physics, 2012
Solar eruptive phenomena embrace a variety of eruptions, including flares, solar energetic particles, and radio bursts. Since the vast majority of these are associated with the eruption, development, and evolution of coronal mass ejections (CMEs), we focus on CME observations in this review. CMEs are a key aspect of coronal and interplanetary dynamics.
David F. Webb, Timothy A. Howard
openaire   +2 more sources

Observations of flux rope formation prior to coronal mass ejections [PDF]

open access: yes, 2013
Understanding the magnetic configuration of the source regions of coronal mass ejections (CMEs) is vital in order to determine the trigger and driver of these events.
Green, Lucie M., Kliem, Bernhard
core   +1 more source

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

Plasmoid-Induced-Reconnection and Fractal Reconnection [PDF]

open access: yes, 2000
As a key to undertanding the basic mechanism for fast reconnection in solar flares, plasmoid-induced-reconnection and fractal reconnection are proposed and examined.
A Hundhausen   +61 more
core   +2 more sources

Coronal Mass Ejection Image Edge Detection In Heliospheric Imager STEREO SECCHI Data

open access: yesThe Open Journal of Astrophysics, 2022
We present an algorithm to detect the outer edges of Coronal Mass Ejection (CME) events as seen in differences of Heliospheric Imager STEREO SECCHI HI-1 images from either A or B spacecraft, as well as its implementation in Python.
Marc Nichitiu
doaj   +2 more sources

Solar Coronal Mass Ejections [PDF]

open access: yesSymposium - International Astronomical Union, 1990
In addition to the more or less steady solar wind, the Sun also ejects mass in highly time dependent events taking place in the corona once every few days at solar activity minimum and as often as three times a day at solar activity maximum (Hundhausen 1988, Low 1986).
A. J. Hundhausen, D. G. Sime, B. C. Low
openaire   +1 more source

Effect of an Interplanetary Coronal Mass Ejection on Saturn’s Radio Emission

open access: yesFrontiers in Astronomy and Space Sciences, 2022
The Saturn Kilometric Radiation (SKR) was observed for the first time during the flyby of Saturn by the Voyager spacecraft in 1980. These radio emissions, in the range of a few kHz to 1 MHz, are emitted by electrons travelling around auroral magnetic ...
B. Cecconi   +4 more
doaj   +1 more source

Solar Physics with the Square Kilometre Array [PDF]

open access: yes, 2018
The Square Kilometre Array (SKA) will be the largest radio telescope ever built, aiming to provide collecting area larger than 1 km$^2$. The SKA will have two independent instruments, SKA-LOW comprising of dipoles organized as aperture arrays in ...
Kontar, E. P., Nindos, A., Oberoi, D.
core   +2 more sources

Unusual shrinkage and reshaping of Earth’s magnetosphere under a strong northward interplanetary magnetic field

open access: yesCommunications Earth & Environment, 2023
Open magnetic flux in the polar cap almost completely disappeared and the Earth’s magnetotail was compressed into a calabash shape during the 9th April 2015 coronal mass ejection, according to magnetohydrodynamic simulations and observations from DMSP ...
Xiang-Yu Wang   +13 more
doaj   +1 more source

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