Coronal mass ejections associated with LDE flares of slow rise phase

TL;DR

This study investigates CMEs linked to long-duration, slow-rise flares, revealing they have high velocities, prolonged acceleration, and characteristics of both impulsive and prominence-associated CMEs.

Contribution

It provides new insights into the kinematic properties of CMEs associated with slow LDE flares, highlighting their unique acceleration profiles and hybrid characteristics.

Findings

CMEs reach velocities >1000 km/s during propagation.

They have low average acceleration during prolonged acceleration phases.

CMEs are accelerated beyond 5 solar radii, higher than typical impulsive CMEs.

Abstract

It is well known, that there is temporal relationship between CMEs and associated flares. The duration of the acceleration phase is related to the duration of the rise phase of a flare. We investigated CMEs associated with long duration flares of slow rise phase (slow LDE). These CMEs are characterized by high velocity (v>1000 km/s) during the propagation phase and low average acceleration during the main, prolongated, acceleration phase. The CMEs are accelerated until the height $> 5 R_\odot$, which is higher value than in typical impulsive CMEs. CMEs associated with slow LDEs have characteristics of both classes of CMEs, i.e. CMEs associated with flares and CMEs associated with eruptive prominences.