### Two Types flares-associated CMEs

**Grzegorz Michalek
**

Astronomical Observatory, Jagiellonian University, Krakow,
Poland

A statistical analysis of 588 flare-associated CMEs is
presented. We demonstrated the there are two types of the flare-associated CMEs:
CMEs which follow and precede flares onsets. We shown that the both samples have
quite different characteristics. The first type of CMEs tend to be decelerated
(median acceleration = -5.0 ms^{-2}),
faster (median velocity = 519 kms^{-1}),
and physically related to flares (a correlation coefficient between CME energy
and the peak of X-ray flare = 0.80). The CMEs preceding associated flares are
mostly accelerated (median acceleration = 5.4 ms^{-2}),
slightly slower (median velocity = 487 kms^{-1}),
and poorly related to flares (a correlation coefficient between CME energy and
the peak of X-ray flare = 0.12). These two types of flare-associated CMEs
demonstrate that the magnetic reconnection, which influences the CMEs
acceleration, could be significantly different for the both sets of data.