Physics
Scientific paper
Apr 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009sosyr..43..128m&link_type=abstract
Solar System Research, Volume 43, Issue 2, pp.128-135
Physics
1
96.50.-E, 96.50.Ci, 96.50.Uv, 96.60.Ph, Interplanetary Physics, Solar Wind Plasma, Sources Of Solar Wind, Ejecta, Driver Gases, And Magnetic Clouds, Coronal Mass Ejection
Scientific paper
We study the correlation between near-Earth observations of interplanetary coronal mass ejections (ICMEs) detected by the Wind and ACE spacecrafts and their counterparts of coronal mass ejections (CMEs) observed near the Sun by the SOHO/LASCO coronagraph during 1996-2002. The results have been compared with an empirical model given by Gopalswamy, et al. (2000; 2001) to predict the 1-AU arrival time of CMEs. In this paper, we use an expected data set with a wider range with initial velocities than that considered in previous models. To improve the accuracy of the predicted arrival time, we divided the CME events into two groups according to their effective acceleration and deceleration. The results show that our model works well for events with a negative acceleration in the initial velocity range between 500 and 2500 km/s, while the model described by Gopalswamy is better for events with initial velocities near the solar wind velocity.
Ahmed Nasr
El-Nawawy M.
Hammam M.
Mahrous A.
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