Solar sources of the geoeffective events in September 2011

Abstract

We investigate the geoeffective events happened from 8 to 20 Sept 2011, analysing the most plausible solar sources of these events, where coronal mass ejections and coronal holes play a fundamental role. The physical properties of the coronal holes, such as area and magnetic field, are studied through the Solar Dynamics Observatory instruments: AIA 193 Ã images and HMI longitudinal magnetograms. The active regions which are the origin of the coronal mass ejections are analysed in AIA and SoHO-LASCO data.

Conference Proceeding: Highlights of Spanish Astrophysics VII. Edited by J. C. Guirado, L.M. Lara, V. Quilis, and J. Gorgas ISBN 978-84-695-7614-4 Sociedad Española de Astronomía, http://www.sea-astronomia.es/drupal/sites/default/files/archivos/proceedings10/fisica_solar/ORALES/palaciosj.pdf