Probing the role of Active Stars in the cosmic magnetism and the acceleration of cosmic rays
Abstract
We present preliminary results on radio polarization observations of a sample of a sample of magnetically active K and M dwarfr and discuss their radio emission properties. Combined with optical photometry and spectra, we explore their long- term magnetic activity levels and the relationship between optical/radio emission, which in turn is key to understding their magnetic field generation and decay with time and rotation rate. Considering that that low-mass dwarfs consist at least 80 % of the galactic stellar population, we also examine the contribution of those active stars in the cosmic magnetic field, which in turn affects the velocity and propagation of galactic cosmic rays.