  The dynamics of a probe D7-brane in an asymptotically AdS-Vaidya background
has been investigated in the presence of an external magnetic field.
Holographically, this is dual to the dynamical meson melting in the N = 2 super
Yang-Milles theory. If the final temperature of the system is large enough, the
probe D7-brane will dynamically cross the horizon (black hole embedding). By
turning on the external magnetic field and raising it sufficiently, the final
embedding of the corresponding D7-brane changes to Minkowski embedding. In the
field theory side, this means that the mesons which melt due to the raise in
the temperature, will form bound states again by applying an external magnetic
field. We will also show that the evolution of the system to its final
equilibrium state is postponed due to the presence of the magnetic field.
