The interstellar medium is the site of a complex cycle of gas transformations that ultimately leads to star formation. It is a multiphase, multiscale environment whose evolution results from the interplay of various physical processes. Low-frequency radio astronomy offers a novel approach to studying this environment; synchrotron polarized emission enables the mapping of the magneto-ionic medium’s structure and reveals new structures.
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In this talk we will focus on the morphological correlation between magnetic field and gas, in particular between synchrotron polarized emission and neutral hydrogen. By comparing post-processed numerical simulations with observations from the LOFAR interferometer, we will show that the cold gas fraction has no impact on the morphological correlation between gas and magnetic field. To understand this point, we will eventually show that simulated cold gas structures tend to be less aligned with the magnetic field than what is seen in the data, partially calling into question the numerical scheme used to produce these simulations.
Local contact: Thierry FOGLIZZO
ORganisation: Frédéric GALLIANO
DAp