SOHO/ACE observation of two consecutive CMEs from the same source region

POLETTO, G.; SCHETTINO, G.; DASSO, S.; MANDRINI, C.H.

Bournemouth

Workshop; STEREO3/SOHO22 Workshop: Three eyes on the Sun - Multi-spacecraft studies of the corona and impacts on the heliosphere; 2009

On 2003 June 2 SOHO/LASCO coronagraph observed two CMEs at the West limb of the Sun at, respectively, 00:30 and 08:54 UT, which appeared to originate from the same source region. Both CMEs show the typical three-part structure, corresponding to the, e.g., "flux-rope model" of Lin & Forbes (2000). These events have been also observed by SOHO/UVCS, allowing us to infer their physical parameters. We also looked for evidence of interplanetary signatures of the CMEs via ACE in situ observations. Indeed, both CMEs are identifiable in ACE data. We discuss here coronal and interplanetary parameters of the two events.