Results 11 to 20 of about 1,540 (161)

Coronal dimmings associated with coronal mass ejections on the solar limb [PDF]

open access: yesThe Astrophysical Journal, 2020
<p>We studied 43 coronal dimming events associated with Earth-directed coronal mass ejections (CMEs) that were observed in quasi-quadrature by the SDO and STEREO satellites. We derived the properties of the dimmings as observed above the limb by ...
Galina Chikunova   +3 more
openaire   +3 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

Interaction of coronal mass ejections and the solar wind

open access: yesAstronomy & Astrophysics, 2022
Aims.Our goal is to thoroughly analyse the dynamics of single and multiple solar eruptions, as well as a stealth ejecta. The data were obtained through self-consistent numerical simulations performed in a previous study. We also assess the effect of a different background solar wind on the propagation of these ejecta to Earth.Methods.We calculated all ...
D.-C. Talpeanu   +4 more
openaire   +5 more sources

A SOLAR CORONAL JET EVENT TRIGGERS A CORONAL MASS EJECTION [PDF]

open access: yesThe Astrophysical Journal, 2015
We present the multi-point and multi-wavelength observation and analysis on a solar coronal jet and coronal mass ejection (CME) event in this paper. Employing the GCS model, we obtained the real (three-dimensional) heliocentric distance and direction of the CME and found it propagate in a high speed over 1000 km/s .
Jiajia Liu   +5 more
openaire   +2 more sources

A census of coronal mass ejections on solar-like stars [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2020
ABSTRACT Coronal mass ejections (CMEs) may have major importance for planetary and stellar evolution. Stellar CME parameters, such as mass and velocity, have yet not been determined statistically. So far only a handful of stellar CMEs has been detected mainly on dMe stars using spectroscopic observations.
H Lammer   +10 more
openaire   +3 more sources

A Model for Solar Coronal Mass Ejections [PDF]

open access: yesThe Astrophysical Journal, 1999
Astrophysical Journal latex file, 28 pages, 8 color and 2 b-w figures (gif files)
Antiochos, S. K.   +2 more
openaire   +2 more sources

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

Energetics of solar coronal mass ejections [PDF]

open access: yesAstronomy & Astrophysics, 2007
Aims: We investigate whether solar coronal mass ejections are driven mainly by coupling to the ambient solar wind or through the release of internal magnetic energy. Methods: We examine the energetics of 39 flux-rope like coronal mass ejections (CMEs) from the Sun using data in the distance range $\sim$ 2--20 $R_{\odot}$ from the Large Angle ...
Subramanian, Prasad, Vourlidas, Angelos
openaire   +2 more sources

Future high-resolution and high-cadence observations for unraveling small-scale explosive solar features

open access: yesFrontiers in Astronomy and Space Sciences, 2023
Solar coronal jets are frequently occurring collimated ejections of solar plasma, originating from magnetically mixed polarity locations on the Sun of size scale comparable to that of a supergranule.
Alphonse C. Sterling   +8 more
doaj   +1 more source

Estimating the Transit Speed and Time of Arrival of Interplanetary Coronal Mass Ejections Using CME and Solar Flare Data

open access: yesUniverse, 2022
The dependence of Interplanetary Coronal Mass Ejections’ (ICMEs) transit speed on the corresponding Coronal Mass Ejections’ (CMEs) initial speed is investigated.
Anatoly Belov   +4 more
doaj   +1 more source

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