Аннотация:We propose that observations of ``hidden'' magnetars
in central compact objects can be used to probe
crustal activity of neutron stars
with large internal magnetic fields.
Our calculations
suggest that central compact objects, which are proposed to be
``hidden'' magnetars, must demonstrate flux variations on the time
scale of months-years.
We consider the source 1E161348-5055 in RCW103 as a ``hidden'' magnetar
candidate.
Employing a simple 2D-modeling we argue that properties
of the source can be
explained by the crustal activity of the magnetar type.
Thus, this object may be supplemented for the known
candidates for the ``hidden'' magnetars among
central compact objects discussed in literature.