A three-dimensional MHD model of plasma flow around Titan

A three-dimensional single-fluid magnetohydrodynamic model is used to study Titan's plasma environment. Three cases are considered. The first case is used to study the plasma conditions present at the time of the Voyager 1 en counter (subsonic yet superAlfvenic flow). In the second case the flow was supersonic and superAlfvenic with a magnetosonic mach number of M-f = 1.4. The flow in the third case was also supersonic and superAlfvenic but with a magnetosonic mach number of M-f = 2.5. The second two cases are relevant f or those times when Titan might find itself in the solar wind or in Saturn' s magnetosheath. Comparisons are made between the modeled density and magne tic field, and measurements made in Titan's wake by Voyager 1. (C) 1998 Pub lished by Elsevier Science Ltd. All rights reserved.