Visualization of the longitudinal magnetic field component in the EUHFORIA heliosphere domain. For both CME models, two initial mass densities were used: n₀ = 1 × 10⁻¹⁶ kg m⁻³ (panels a and b for the mMT CME model and panels c and d for the Soloviev CME model) and n₀ = 1 × 10⁻¹⁶ kg m⁻³ (panels e and f for the mMT CME model and panels g and h for the Soloviev CME model). The geometrical, magnetic, and thermodynamic parameters of the CMEs are described in Sect. 4.2.1. The left panels (a, c, e, g) show the evolution of the longitudinal field, B_lon, on March 4 while the right panels (b, d, f, h) show the simulation on November 6. Each panel is divided into an equatorial cross section, a meridional cross section passing through the Sun and the Earth, and a Mercator projection at 0.1 AU from the Sun. The visualization displays the positions of the different planets in the simulation domain, the location of the current sheet, and the interplanetary magnetic field connecting the Sun and the planets, obtained from Parker spirals.