Speaker
Description
The LOw-Frequency ARray (LOFAR) provides a unique opportunity to probe the magneto-ionised structure of our Galactic neighbourhood with great resolution. We will present a new mosaic created with the LoTSS-DR2 data, which shows polarised synchrotron emission in the high-latitude inner Galaxy. Faraday tomography of this data reveals a remarkably ordered structure whose orientation aligns well with the HI filaments and the magnetic field. We estimate the minimum distance to the Faraday structures to be between 40 and 80 pc, which puts them near the Local Bubble wall. The emission is organised in a large gradient in Faraday depth whose origin we associate with the curved wall of the Local Bubble. Comparing our data with a model of the Local Bubble wall, we conclude that we might be probing a contribution of the
medium inside the Local Bubble cavity as well, corresponding to the complex of local interstellar clouds (LICs).
