  We develop a new approach in magneto-optical imaging (MOI), applying for the
first time a ghost imaging (GI) protocol to perform Faraday microscopy. MOI is
of the utmost importance for the investigation of magnetic properties of
material samples, through Weiss domains shape, dimension and dynamics analysis.
Nevertheless, in some extreme conditions such as e. g. cryogenic temperatures
or high magnetic fields application, there exists a lack of domains images due
to the difficulty in creating an efficient imaging system in such environments.
Here we present an innovative MOI technique that separates the imaging optical
path from the one illuminating the object. The technique is based on thermal
light GI and exploits correlations between light beams to retrieve the image of
magnetic domains. As a proof of principle, the proposed technique is applied to
the Faraday magneto-optical observation of the remanence domain structure of an
yttrium iron garnet sample.
