Variations of the plasma pressure in a magnetic flux tube can produce MHD waves evolving into shocks. In the case of a low plasma beta. plasma pressure pulses in the magnetic flux tube generate MHD slow shocks propagating along the tube. For converging magnetic field lines. https://safeersappliancers.shop/product-category/siemens-iq500-mb535a0s0b-double-built-in-electric-oven/