Results 21 to 30 of about 1,542 (192)

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

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

Numerical simulations of the solar corona and Coronal Mass Ejections [PDF]

open access: yesEarth, Planets and Space, 2009
Abstract Numerical simulations of Coronal Mass Ejections (CMEs) can provide a deeper insight in the structure and propagation of these impressive solar events. In this work, we present our latest results of numerical simulations of the initial evolution of a fast CME.
Poedts, Stefaan   +4 more
openaire   +1 more source

STOCHASTICITY AND PERSISTENCE OF SOLAR CORONAL MASS EJECTIONS

open access: yesThe Astrophysical Journal, 2013
The study of the statistical properties of coronal mass ejections (CMEs) reveals that their properties depend on the period of solar activity. In particular, when investigating the origin of the waiting time distribution between CMEs, a significant departure from a Poisson process during periods of high solar activity has been found, thus suggesting ...
Vincenzo Carbone   +4 more
openaire   +2 more sources

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

A Coronal Mass Ejection Source Region Catalog and Their Associated Properties

open access: yesThe Astrophysical Journal Supplement Series, 2023
The primary objective of this study is to connect coronal mass ejections (CMEs) to their source regions, primarily to create a CME source region catalog, and secondarily to probe the influence that the source regions have on the different statistical ...
Satabdwa Majumdar   +6 more
doaj   +1 more source

Key Signatures of Prominence Materials and Category of Cold Materials Identified by Random Forest Classifier

open access: yesThe Astrophysical Journal Supplement Series, 2023
The origin of cold materials identified by different criteria is unclear. They are highly suspected to be erupted prominences. However, some cold materials defined by charge depletion exist in both quiet solar wind and interplanetary coronal mass ...
Zexin Cheng, Shuo Yao, Shuyi Meng
doaj   +1 more source

The Effect of Helio-Geomagnetic Activity in the Geo-Environment and by Extension to Human Health

open access: yesAtmosphere
Solar activity encompasses various phenomena within the solar atmosphere, notably including eruptive events like solar flares and coronal mass ejections (CMEs) [...]
Panagiota Preka-Papadema   +1 more
doaj   +1 more source

Is There a Dynamic Difference between Stealthy and Standard Coronal Mass Ejections?

open access: yesThe Astrophysical Journal, 2022
Stealthy coronal mass ejections (CMEs), lacking low coronal signatures, may result in significant geomagnetic storms. However, the mechanism of stealthy CMEs is still highly debated.
Beili Ying   +4 more
doaj   +1 more source

Coalescence of Magnetic Flux Ropes Within Interplanetary Coronal Mass Ejections: Multi-cases Studies

open access: yesFrontiers in Physics, 2019
Coronal mass ejections (CMEs) are intense solar explosive eruptions and have significant impact on geomagnetic activities. It is important to understand how CMEs evolve as they propagate in the solar-terrestrial space.
Yan Zhao   +7 more
doaj   +1 more source

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