Affiliation: | 1Instituto Nacional de Pesquisas Espaciais,INPE, São José dos Campos, 12201-970, (SP), Brazil 2Max-Planck-Institut für Aeronomie, MPAe, D-3719 1, Katlenburg-Lindau, Germany 3Observatorio Astronómico Félix Aguilar, Avda. Benavídez 8175 Oeste, 5413 Chimbas, San Juan, Argentina |
Abstract: | In this work we have tracked coronal mass ejections observed with the ground based Mirror Coronagraph for Argentina (MICA) and the Large Angle and Spectroscopic Coronagraph (LASCO) C2 and C3 on board of the Solar and Heliospheric Observatory (SOHO). The MICA telescope is located at El Leoncito (31.8 S, 69.3 W), San Juan (Argentina), since 1997 as part of a bilateral scientific project between Germany and Argentina. SOHO is a project of international cooperation between ESA and NASA. Together these instruments are able to observe the solar corona ranging from 1.05 to 32 solar radii. MICA images the Fe XIV emission line corona and LASCO coronagraphs observe the Thomson scattered white light corona. We have selected events for which there are observations from the three coronagraphs. Using the composite data we were able to obtain height-time diagrams for the corresponding dynamical coronal features traveling outwards in order to determine some of their kinematical properties, i.e., plane of sky velocity and acceleration. |