The IXPE view of GRB 221009A

We present the IXPE observation of GRB~221009A which includes upper limits on the linear polarization degree of both prompt and afterglow emission in the soft X-ray energy band.GRB~221009A is an exceptionally bright gamma-ray burst (GRB) that reached Earth on 2022 October 9 after traveling through the dust of the Milky Way. The Imaging X-ray Polarimetry Explorer (IXPE) pointed at GRB~221009A on October 11 observing, for the first time, the 2--8 keV X-ray polarization of a GRB afterglow. Additionally, IXPE captured halo-rings of dust-scattered photons which are echoes of the GRB prompt emission, allowing for assessment on the prompt GRB emission. In this presentation we report the results of the IXPE observation of GRB 221009A.