Title: Intensity Distribution of Small Magnetic Features from Minimum to Maximum
Author: Ada Ortiz
Affil: Dept. Astronomia i Meteorologia - Universitat de Barcelona - C/ Marti i Franques 1, E-08028 Barcelona, Spain
Email: aortiz@am.ub.es
Authors: V. Domingo, B. Sanahuja, M. Fligge, S. Solanki
Affils: MFligge=Institute of Astronomy, ETH-Zentrum, CH-8092 Zurich, Switzerland; SSolanki=Max-Planck-Institut fur Aeronomie, 37191 Katlenburg-Lindau, Germany
Abstract: We analyze the long term evolution of the intensity (by means of the contrast) distribution of small magnetic features, like faculae and magnetic network. We use near-simultaneous full disk magnetograms and images of photospheric continuum intensity provided by the Michelson Doppler Interferometer (MDI) on board SOHO. A distinction between flux tubes within and outside active regions or quiet Sun network is made. The evolution of the contrasts of both flux tube populations -faculae and network- from solar minimum to solar maximum is studied.