Eyecciones coronales de masa asociadas a una región superactiva

FERNANDO MARCELO LÓPEZ; CARLOS FRANCILE; HEBE CREMADES; ADRIANA GULISANO; GUTIERREZ-ESCATE, M. V.; CRISTINA MANDRINI; CRISTIANI GERMÁN

Congreso; Reunión Anual de la Asociación Argentina de Astronomía; 2017

During its transit through central meridian, and for four consecutivedays, from 13 to 16 February 2011, the active region NOAA AR 11158generated coronal mass ejections (CMEs) in association with wavesobserved in the extreme ultra-violet (EUV) low corona, and even with achromospheric Moreton wave. On those dates, the spacecraft of the STEREO mission were located in quadrature with SOHO and SDO, enablingexceptional observation of these Earth-directed events. In this workthe CMEs and interplanetary counterparts are analyzed by means of multiple viewpoints and wavelengths. The results show that the CMEsunder study do not show morphological resemblance in coronagraphicobservations, despite having been produced in the same active region andclose in time. Moreover, low-frequency radio emissions registered bythe instrument Waves aboard the Wind spacecraft allowed the tracking ofsome of these events in the interplanetary medium.