TY  - JOUR
AU  - Miteva R, Klein K-L
PY  - 2013//
TI  - Solar Energetic Particle Events in the 23rd Solar Cycle: Interplanetary Magnetic Field Configuration and Statistical Relationship with Flares and CMEs
JO  - SOLAR PHYSICS
SP  - 579
EP  - 613
VL  - 282
IS  - 2
PB  - Springer Netherlands
KW  - Coronal mass ejections
KW  - interplanetary
KW  - Energetic particles
KW  - Magnetic fields
KW  -
N2  - We study the influence of the large-scale interplanetary magnetic field configuration on the solar energetic particles (SEPs) as detected at different satellites near Earth and on the correlation of their peak intensities with the pa\-rent solar activity. We selected SEP events associated with X and M-class flares at western longitudes, in order to ensure good magnetic connection to Earth. These events were classified into two categories according to the global interplanetary magnetic field (IMF) configuration present during the SEP pro\-pagation to 1~AU: standard solar wind or interplanetary coronal mass ejections (ICMEs). Our analy\-sis shows that around 20\% of all particle events are detected when the spacecraft is immersed in an ICME. {\bf The correlation of the peak particle intensity with the projected speed of the SEP-associated coronal mass ejection is similar in the two IMF categories of proton and electron events, $\sim 0.6$.} The SEP events show stronger correlation of the peak proton intensity with the soft X-ray flux of the associated solar flare, $r=0.67^{\pm 0.13}$, compared to the SEP events propagating in the standard solar wind, $r=0.36^{\pm 0.13}$. {\bf The difference is more pronounced for near-relativistic electrons. The main reason for the different correlation behaviour seems to be the larger spread of the flare longitude in the SEP sample detected in the solar wind as compared to SEP events within ICMEs. We discuss to which extent observational bias, different physical processes (particle injection, transport, etc.) and the IMF configuration can influence the relationship between SEPs and coronal activity
SN  - 0038-0938
UR  - http://dx.doi.org/10.1007/s11207-012-0195-2
N1  - exported from refbase (http://publi.ipev.fr/polar_references/show.php?record=4019), last updated on Wed, 03 Jul 2024 14:46:06 +0200
ID  - MitevaR2013
ER  -