3D relativistic MHD simulations of bow-shock Pulsar Wind Nebulae with highly asymmetric geometry

Abstract

Bow-shock pulsar wind nebulae (PWNe) show a variety of morphological shapes. We attribute this diversity to the geometrical factors: relative orientations of the pulsar rotation axis, proper velocity, and the line of sight. Here we report study of morphology in the most complicated geometry, when the pulsar rotation axis and its proper velocity makes an arbitrary angle (in the simulations we adopt a value of ∼ π/4). Using 3D RMHD simulations we obtain the MHD structure of PWN and compute synthetic synchrotron emissivity maps.