Fredagskollokvium: Synergies between CMB data and stellar polarimetry

Gina Panopoulou, Assistant Professor at Division of Astronomy and Plasma Physics, Chalmers University of Technology, Gothenburg.

Tid og sted: 12. mai 2023 11:15 – 12:00, Peisestua (room 304), Svein Rosselands Hus / Zoom

portrettbildet av en ung smilende kvinne — Gina Panopoulou, Division of Astronomy and Plasma Physics, Chalmers University of Technology.

Interstellar dust grains impart a polarization on starlight that can be used to trace the magnetic field, similarly to polarized dust emission. With knowledge of stellar distances, stellar polarization can be used to disentangle 3D information about dust and magnetic field properties along the line of sight. I will review recent advances in the field that make use of this powerful tracer of the magnetized ISM. I will discuss the potential of combining stellar polarization datasets with polarized dust and synchrotron emission to improve foreground modeling, map 3D magnetic fields, and explore dust microphysics. Finally, I will present avenues for further investigation through existing and future datasets with focus on the upcoming survey PASIPHAE.

colourful globe, blue, orange, red — All-sky map of interstellar dust at microwave frequencies, showing the pattern of the Galactic magnetic field revealed by polarization. Credit: ESA/Planck

This Friday colloquium will be hybrid. Attendees can therefore participate either in-person or via Zoom. Please join via Zoom at

https://uio.zoom.us/j/69001043754?pwd=cEJpbVE5ci9PdWNtRld2TDNNcGtKdz09

Meeting ID:690 0104 3754

Passcode: PeiseStua3

Attendees will be muted during the colloquium, but will have the opportunity to ask questions at the end by clicking on the "raise hand” button (or send a request via chat).

Emneord: fredagskollokvium, institute seminar, Interstellar medium, polarization, interstellar dust

Publisert 2. mai 2023 09:23 - Sist endret 5. mai 2023 15:31