Results 221 to 230 of about 16,204 (260)
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The launch of solar coronal mass ejections: Results from the coronal mass ejection onset program
Journal of Geophysical Research: Space Physics, 1990We describe a set of solar coronal mass ejection (CME) events where coincident data sets from both X ray and white light instruments have been made available through deliberate planning. Using these we have been able to put tight limits on possible descriptions of the typical sequence of events, and these we relate to interpretations of models ...
R. A. Harrison +4 more
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Solar Flares and Coronal Mass Ejections
Annual Review of Astronomy and Astrophysics, 1992Attempts to clarify the nature of the terrestrial effects of solar activity and variability continue at an increasing pace. While mechanisms relating possible changes in terrestrial weather patterns to changes in solar lumin osity remain elusive, it has long been thought that intense geomagnetic storms and interplanetary disturbances can be traced ...
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On the origin of solar halo coronal mass ejections
Письма в астрономический журнал: Астрономия и космическая астрофизика, 2019We present an investigation of halo coronal mass ejections (HCMEs) to understand the origin of HCMEs which is very important because HCMEs are regarded as main causes of heliospheric and geomagnetic disturbances. In this study, we have investigated 313 HCMEs observed during 1996–2012 by LASCO, coronal holes (CHs) and solar flares phenomena.
V. K. Verma, Nishant Mittal
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Coronal mass ejections of solar cycle 23
Journal of Astrophysics and Astronomy, 2006I summarize the statistical, physical, and morphological properties of coronal mass ejections (CMEs) of solar cycle 23, as observed by the Solar and Heliospheric Observatory (SOHO) mission. The SOHO data is by far the most extensive data, which made it possible to fully establish the properties of CMEs as a phenomenon of utmost importance to Sun-Earth ...
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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, 1996We 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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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
2007Abstract : 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, 2010We 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 +6 more
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Prompt solar proton events and coronal mass ejections
Solar Physics, 1978Data 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 +2 more
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