Modeling and prediction of fast CME/shocks associated with type II bursts

Details Modeling and prediction of fast CME/shocks associated with type II bursts Modeling and prediction of fast CME/shocks associated with type II bursts

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009iaus..257..489x&link_type=abstract

Universal Heliophysical Processes, Proceedings of the International Astronomical Union, IAU Symposium, Volume 257, p. 489-491

Astronomy and Astrophysics

Astronomy

Coronal Mass Ejections (Cmes), Shock Waves, Solar-Terrestrial Relations

Scientific paper

A numerical simulation with ENLIL+Cone model was carried out to study the propagation of the shock driven by the 2005 May 13 CME. We then conducted a statistical analysis on a subset of similar events, where a decameter-hectometric (DH) type II radio burst and a counterpart kilometric type II have been observed to be associated with each CME (DHkm CME). The simulation results show that fast CME-driven shocks experienced a rapid deceleration as they propagated through the corona and then kept a nearly constant speed traveling out into the heliosphere. Two improved methods are proposed to predict the fast CME-driven shock arrival time, which give the prediction errors of 3.43 and 6.83 hrs, respectively.

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