School of Physical and Chemical Sciences, Te Kura Matū Seminar Series

Polarization Archetypes in Protostellar Disks and Cores: The ALMA view

Speaker

Dr Josep Miquel Girart

Institute

Institute of Space Sciences, Barcelona

Time & Place

Fri, 13 Jul 2018 11:00:00 NZST in Ernest Rutherford Room 465

All are welcome

Abstract

Linear polarization observations with ALMA is allowing to study the dust polarization properties at disk and core scales towards low and high mass star forming regions with a superb sensitivity. At core scales, the dust polarization is a good tracer of the magnetic fields threading the cores. Therefore, ALMA observations allow to investigate the role of magnetic fields in the formation of stars. On the other hand, and contrary to what it was though few years ago, the dust polarized emission in protostellar disks is not only produced by dust grains aligned with the magnetic fields. Self-scattering and radiation alignment of non-spherical grains can contribute significantly to the polarized emission. In this presentation I will show different targets where the different mechanism are revealed and what we can learn from them.

 

Biography

https://www.ice.csic.es/en/content/2/welcome-from-the-director