MHD Simulations of Ram Pressure Stripping in Late-Type Galaxies

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Scientific paper

We present first magnetohydrodynamical (MHD) simulations of ram pressure stripping in late type galaxies in the intracluster medium (ICM). Our simulations include magnetic fields, radiative cooling, and self gravity of the gas. We show that the interaction of the galaxies with the sub-equipartition ICM magnetic fields on scales comparable to the galactic disk scales, leads to the formation of magnetic ``shield'' protecting the galaxies, which can severely limit the amount of ram pressure stripping. This magnetic draping effect also affects the topology of the tails, and the amount of turbulent mixing on the ICM-tail interface. We make predictions regarding the observational signatures of ram pressure stripping tails.

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