601749.fig.001
Figure 1: Points on the center flux lines moving oppositely on a line perpendicular to the bisecting line of the angle 𝛼 with velocity modulus 𝑣 1 . For sufficiently small 𝛼 the velocity modulus 𝑣 2 of the intersection point is superluminal: 𝑣 2 = 𝑣 1 c o t ( 𝛼 / 2 ) .