Results 31 to 40 of about 30,967 (299)

Solar Mass Ejections and Coronal Holes [PDF]

open access: yesInternational Astronomical Union Colloquium, 1996
AbstractIn this paper we present observations of two types of solar mass ejections, which seem to be associated with the location of coronal holes. In the first type, a filament eruption was observed near a coronal hole, which gave rise to a strong interplanetary scintillations, as detected by IPS observations.
openaire   +1 more source

Major solar flares without coronal mass ejections [PDF]

open access: yesProceedings of the International Astronomical Union, 2008
AbstractWe examine the source properties of X-class soft X-ray flares that were not associated with coronal mass ejections (CMEs). All the flares were associated with intense microwave bursts implying the production of high energy electrons. However, most (85%) of the flares were not associated with metric type III bursts, even though open field lines ...
N. Gopalswamy, S. Akiyama, S. Yashiro
openaire   +1 more source

Mass-loss Rates from Coronal Mass Ejections: A Predictive Theoretical Model for Solar-type Stars [PDF]

open access: yes, 2017
Coronal mass ejections (CMEs) are eruptive events that cause a solar-type star to shed mass and magnetic flux. CMEs tend to occur together with flares, radio storms, and bursts of energetic particles. On the Sun, CME-related mass loss is roughly an order
S. Cranmer
semanticscholar   +1 more source

Indications of stellar coronal mass ejections through coronal dimmings [PDF]

open access: yesNature Astronomy, 2021
Coronal mass ejections (CMEs) are huge expulsions of magnetized matter from the Sun and stars, traversing space with speeds of millions of kilometres per hour.
A. Veronig   +5 more
semanticscholar   +1 more source

Trajectories of coronal mass ejection from solar-type stars

open access: yesMonthly Notices of the Royal Astronomical Society, 2023
ABSTRACT The Sun and other solar-type stars have magnetic fields that permeate their interior and surface, extend through the interplanetary medium, and are the main drivers of stellar activity. Stellar magnetic activity affects the physical processes and conditions of the interplanetary medium and orbiting planets.
Fabian Menezes   +5 more
openaire   +2 more sources

The heliospheric magnetic field over the Hale cycle [PDF]

open access: yes, 2008
The concept that open magnetic flux of the Sun (rooted with one and only one footpoint at the Sun) is a conserved quantity is taking root in the heliospheric community.
Crooker, N. U.   +2 more
core   +2 more sources

Coronal Mass Ejections over Solar Cycles 23 and 24

open access: yesSpace Science Reviews, 2019
We present a statistical analysis of solar coronal mass ejections (CMEs) based on 23 years of quasi-continuous observations with the LASCO coronagraph, thus covering two complete Solar Cycles (23 and 24).
P. Lamy   +5 more
semanticscholar   +1 more source

Understanding the Origins of Problem Geomagnetic Storms Associated with “Stealth” Coronal Mass Ejections [PDF]

open access: yesSpace Science Reviews, 2021
Geomagnetic storms are an important aspect of space weather and can result in significant impacts on space- and ground-based assets. The majority of strong storms are associated with the passage of interplanetary coronal mass ejections (ICMEs) in the ...
N. Nitta   +16 more
semanticscholar   +1 more source

MHD waves at a spherical interface modelling coronal global EIT waves [PDF]

open access: yes, 2007
Energetically eruptive events such as flares and coronal mass ejections (CMEs) are known to generate global waves, propagating over large distances, sometimes comparable to the solar radius.
I. Ballai, M. Douglas, Nakariakov
core   +1 more source

Near-earth solar wind flows and related geomagnetic activity during more than four solar cycles (1963–2011)

open access: yesJournal of Space Weather and Space Climate, 2012
In past studies, we classified the near-Earth solar wind into three basic flow types based on inspection of solar wind plasma and magnetic field parameters in the OMNI database and additional data (e.g., geomagnetic indices, energetic particle, and ...
Richardson Ian G., Cane Hilary V.
doaj   +1 more source

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