演講資訊

摘要：

Polarimetry is emerging as a powerful new tool to explore the universe, complementing well-established techniques like photometry and spectroscopy. Dust and magnetic fields are ubiquitous in the universe and are widely thought to play crucial roles in many astrophysical processes, from star formation and stellar feedback to planet formation, complex molecule synthesis, and origins of life. Polarization of light induced by the alignment of dust grains with magnetic fields is a leading tool for illuminating the dusty and magnetized universe from the UV-optical-NIR to far-IR and (sub-)mm wavelengths. The powerful observatories (ALMA, NOEMA, SOFIA/HAWC+, JCMT/POL2, IRAM/NIKA2-Pol, APEX/A-MKID, TolTEC, and future SKA) provide a vast amount of polarization data, which promise to shed light on the key roles of dust and magnetic fields in many astrophysical processes. In this talk, I will comprehensively review the current state-of-the-art of our theoretical frameworks and computational tools, as well as observational constraints of dust physics and magnetic fields using dust polarization. I will then introduce a new technique for probing 3D magnetic fields and constraining dust properties using multi-wavelength dust polarization and grain alignment theory.