TY - JOUR T1 - Magnetohydrodynamic Modeling of Relativistic Outflows Y1 - 2008 A1 - Vlahakis, Nektarios KW - Jets KW - magnetohydrodynamics KW - outflows KW - relativity AB - The main characteristics of relativistic, steady, ideal magnetohydrodynamic (MHD) outflows are discussed, focusing on their bulk acceleration and collimation. It is shown that the Bernoulli equation relates the bulk Lorentz factor with the shape of the flow, permitting an analytic estimation of the acceleration efficiency, while the transfield force-balance equation gives a simple relation of the bulk Lorentz factor to the distance. VL - 17 SN - 0218-2718 UR - https://ui.adsabs.harvard.edu/abs/2008IJMPD..17.1661V JO - International Journal of Modern Physics D ER -