Coronal density distribution integrated along the line-of-sight taken from the MHD simulation. The density is shown at two different vantage points (as viewed from Earth in panels a–c and above the solar north pole in panels d–f) at the times of t = 13.9, 23.2, and 34.8 min. The blue line (bottom row) represents the plane-of-sky position. The eye symbol in the bottom row indicates the view as seen from SDO/at Earth. The panels also show the evolution of the magnetic field lines (light blue, dark blue, and magenta) of three flux ropes (FR1, FR2, and FR3) that erupt in the MHD simulation.