Geoeffective coronal mass ejections and energetic particles

2006 ◽  
pp. 335-344 ◽  
Author(s):  
Eino Valtonen
Keyword(s):  
Coronal Mass Ejections ◽  
Energetic Particles

scholarly journals How Efficient are Coronal Mass Ejections at Accelerating Solar Energetic Particles?

2008 ◽  
Author(s):  
R. A. Mewaldt ◽  
C. M. S. Cohen ◽  
J. Giacalone ◽  
G. M. Mason ◽  
E. E. Chollet ◽  
...  
Keyword(s):  
Coronal Mass Ejections ◽  
Energetic Particles ◽  
Solar Energetic Particles

scholarly journals Very narrow coronal mass ejections producing solar energetic particles

2018 ◽  
Vol 619 ◽  
pp. A34 ◽  
Author(s):  
K. Bronarska ◽  
M. S. Wheatland ◽  
N. Gopalswamy ◽  
G. Michalek
Keyword(s):  
Coronal Mass Ejections ◽  
Weather Forecasting ◽  
Coronal Holes ◽  
Energetic Particles ◽  
Solar Energetic Particles ◽  
Low Energy ◽  
Angular Width ◽  
Arrival Times ◽  
Kolmogorov Smirnov ◽  
Solar Particles

Aims. Our main aim is to study the relationship between low-energy solar particles (energies below 1 MeV) and very narrow coronal mass ejections (“jets” with angular width ≤ 20°). Methods. For this purpose, we considered 125 very narrow coronal mass ejections (CMEs) from 1999 to 2003 that are potentially associated with low-energy solar particles (LESPs). These events were chosen on the basis of their source location. We studied only very narrow CMEs at the western limb, which are expected to have good magnetic connectivity with Earth. Results. We found 24 very narrow CMEs associated with energetic particles such as ions (protons and 3He), electrons, or both. We show that arrival times at Earth of energetic particles are consistent with onset times of the respective CMEs, and that in the same time intervals, there are no other potential sources of energetic particles. We also demonstrate statistical differences for the angular width distributions using the Kolmogorov–Smirnov test for angular widths for these 24 events. We consider a coherent sample of jets (mostly originating from boundaries of coronal holes) to identify properties of events that produce solar energetic particles (velocities, widths, and position angles). Our study presents a new approach and result: very narrow CMEs can generate low-energy particles in the vicinity of Earth without other activity on the Sun. The results could be very useful for space weather forecasting.

Solar Energetic Particles and Radio‐silent Fast Coronal Mass Ejections

2006 ◽  
Vol 642 (2) ◽  
pp. 1222-1235 ◽  
Author(s):  
C. Marque ◽  
A. Posner ◽  
K.‐L. Klein
Keyword(s):  
Coronal Mass Ejections ◽  
Energetic Particles ◽  
Solar Energetic Particles
Sign in / Sign up

Export Citation Format

Share Document