Ingoing portion of the severed flux tube has contracted toward the EH to r = 1.08r₊ in the top frame at t = 4M after thevacuum gap starts to spread open. The large scale poloidal magnetic field is plotted in Boyer–Lindquist coordinates. The nature of the disk is very uncertain and it is represented symbolically by a simple wedge. In the bottom frame, the severed flux tube has contracted to r = 1.001r₊ at t = 15M after the vacuum gap starts to spread open. Note that the large scale field is contracting towards the black hole. In the top (bottom) frame the poloidal magnetic field in the disk is ≈ 2% (≈ 0.4%) of the poloidal field strength in the original flux tube when it entered the EHM. The bottom frame indicates that poloidal magnetic flux is almost completely dissipated on a timescale of one half of the rotational period of the ISCO.