Flares in the Galactic Centre II: polarisation signatures of flares at mm-wavelengths

Understand

Recent polarimetric mm-observations of the galactic centre by Wielgus et al.

• (2022a) showed sinusoidal loops in the Q-U plane with a duration of one hour.
• The loops coincide with a quasi-simultaneous X-ray flare.
• A promising mechanism to explain the flaring events are magnetic flux eruptions in magnetically arrested accretion flows (MAD).