  The presented study is an updated search for magnetic monopoles using data
taken with the ANTARES neutrino telescope over a period of 10 years (January
2008 to December 2017). In accordance with some grand unification theories,
magnetic monopoles were created during the phase of symmetry breaking in the
early Universe, and accelerated by galactic magnetic fields. As a consequence
of their high energy, they could cross the Earth and emit a significant signal
in a Cherenkov-based telescope like ANTARES, for appropriate mass and velocity
ranges. This analysis uses a run-by-run simulation strategy, as well as a new
simulation of magnetic monopoles taking into account the Kasama, Yang and
Goldhaber model for their cross section with matter. The results obtained for
relativistic magnetic monopoles with velocity higher than 0.817c, where c is
the speed of light in vacuum, are presented.
