| |
 |
UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-22 1:37 |
 |
|
|
|
Conference: Bucharest University Faculty of Physics 2011 Meeting
Section: Atomic and Molecular Physics; Astrophysics
Title:
Coronal mass ejections and cosmic rays modulation
Authors:
Marilena Mierla(2), T. Badescu(1)
Affiliation:
1) University of Bucharest, Faculty of Physics, Bucharest, Romania
(2)Geodynamics National Institute Of Romanian Academy, Bucharest, Romania
E-mail
toma.badescu@gmail.com
Keywords:
Galactic Cosmic Rays, Coronal Mass Ejections
Abstract:
The primary requirement of galactic cosmic rays (GCR) modulation is the presence of magnetic irregularities in the heliosphere. When coronal mass ejections (CMEs) are close to Earth, they act as a blanket deflecting GCRs and hence preventing them from reaching Earth. We have selected 407 CMEs in the period 1996-2005, which have the sources on the visible part of the Sun and which have the highest probability to reach the Earth. Cosmic rays characteristics (magnitude of Forbush decreases) are calculated and correlated with interplanetary CMEs (ICMEs) parameters (speed, density, magnetic field). The energy range of GCR affected by ICMEs is also estimated.
|
|
|
|