Results 181 to 190 of about 15,087 (215)

The Hydromagnetic Nature of Solar Coronal Mass Ejections

Annual Review of Astronomy and Astrophysics, 2005
▪ Abstract  Solar coronal mass ejections (CMEs) are a major form of activity on the Sun. A CME takes 1015-16g of plasma from the low corona into the solar wind, to disturb the near-Earth space if the CME direction is favorable. We summarize current observations and ideas of CME physics to provide a hydromagnetic view of the CMEs as the products of ...
Mei Zhang, Boon Chye Low
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Coronal Mass Ejections and Solar Energetic Particle Events,

AIP Conference Proceedings, 1996
We review the observations relating solar energetic particle (SEP) events to coronal mass ejections (CMEs). Nearly every gradual SEP event is associated with a fast (v≳400 km/s) CME, which is presumed to drive a coronal shock that accelerates the SEPs.
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Solar Coronal Mass Ejections

The Sun’s magnetized plasma atmosphere is the source of various forms of activity, the most dramatic of which are coronal mass ejections (CMEs). These ejections are a bulk expulsion of plasma and magnetic field that travel out into the heliosphere, causing space weather effects on any planetary environments that they interact with.
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Coronal Mass Ejection Research Using Solar Mass Ejection Imager (SMEI) Data

2007
Abstract : This report results from a contract tasking University of Birmingham as follows: The contractor will investigate data collected on coronal mass ejections (CME), and attempt to construct images of CMEs as they move towards the earth and predict their arrival.
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Interplanetary Coronal Mass Ejections During Solar Cycle 23

AIP Conference Proceedings, 2010
We summarize the properties of the ∼320 interplanetary coronal mass ejections (ICMEs) identified in the near‐Earth solar wind during solar cycle 23 up to mid‐2009 and note a recent increase in the ICME rate that may be associated with the new solar cycle. We also discuss how recent revisions in the ACE/SWICS solar wind composition data require the ICME
Ian G. Richardson, Hilary V. Cane, M. Maksimovic, K. Issautier, N. Meyer-Vernet, M. Moncuquet, F. Pantellini   +6 more
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Prompt solar proton events and coronal mass ejections

Solar Physics, 1978
Data from the HAO white-light coronagraph and the X-ray telescope on Skylab have been used to investigate the coronal manifestations of 18 prompt solar proton events observed on the IMP 7 spacecraft during the Skylab period. Evidence is found that a mass-ejection event is a necessary condition for the occurrence of a prompt proton event.
S. W. Kahler, E. Hildner, M. A. I. Van Hollebeke   +2 more
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3D Patchy Reconnection in Solar Coronal Mass Ejections

IEEE Conference Record - Abstracts. 2005 IEEE International Conference on Plasma Science, 2005
Summary form only given. Coronal mass ejections (CME's), sudden eruptions of coronal plasma and magnetic field into the interplanetary medium, are one of the most dynamic phenomena in the solar corona. These CME's are an important driver of space weather both through their interaction with the Earth's magnetosphere and through the magnetic reconnection
Mark G. Linton, Dana W. Longcope, Spiro K. Antiochos   +2 more
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The solar sources of coronal mass ejections

2008
Despite nearly two decades of observations and study of coronal mass ejections (CMEs), the question of the physical and phenomenological origins of CMEs remains unanswered. This question has been addressed in several different types of studies, each having important limitations.
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The source regions of solar coronal mass ejections

Solar Physics, 1990
Knowledge of the origin of the solar coronal mass ejection (CME) may be crucial to our understanding of several active solar phenomena, such as flares, as well as to the structure and stability of the corona and the prediction of interplanetary disturbances.
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The Solar Cycle Dependence of Coronal Mass Ejections

1986
The Solwind white light coronagraph on P78-1 has been making routine observations of the solar corona since 28 March 1979. Data from the 1984/1985 time period has just been analyzed. During this interval, a period of low solar activity, coronal mass ejections (CMEs) occurred at the rate of 0.2– 0.4/day, in contrast to the rate of 1.8/day during the ...
R. A. Howard, N. R. Sheeley, D. J. Michels, M. J. Koomen   +3 more
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