Emisión (sub)milimétrica polarizada de discos protoplanetarios

M. Fernández López.

Serie: Trabajos publicados del IAR ; no. 1697

Resumen: Protoplanetary disks are thought to be magnetically active and could transport angular momentum via magneto-rotational instabilities and disk winds. These hypothesis have been the theoretical background in order to understand magnetic fields in disks via high-angular resolution (<100 au scales) and great sensitivity (polarized fraction in these objects is typically ∼1%) polarimetric observations. Due to the enormous capabilities of the Atacama Large Millimeter/submillimeter Array (ALMA) telescope, polarization studies at millimeter and submillimeter wavelengths toward protoplanetary disks have grown in the last six years. These observations were intended to map and measure the spatial distribution of the magnetic field in disks. Surprisingly, the actual origin of the polarized emission in disks differs from the Interstellar Medium typical origin (dust grains aligned along magnetic field lines). In this contribution I will review the interferometric polarimetry research in protoplanetary disks both in the theoretical and the observational facets. I will present some paths currently proposed to obtain information of magnetic fields in disks