  Recent observational evidence indicates that the center of our Milky Way
harbours a super-massive object with ultra-strong radial magnetic field
(Eatough et al., 2013). Here we demonstrate that the radiations observed in the
vicinity of the Galactic Center (GC) (Falcke and Marko 2013) cannot be emitted
by the gas of the accretion disk since the accreting plasma is prevented from
approaching to the GC by the abnormally strong radial magnetic field. These
fields obstruct the infalling accretion flow from the inner region of the disk
and the central massive black hole in the standard model. It is expected that
the observed radiations near the Galactic Center cannot be generated by the
central black hole.
  We also demonstrate that the observed ultra-strong radial magnetic field near
the Galactic Center ( Eatough et al., 2013) cannot be generated by the -
turbulence dynamo mechanism of Parker since preliminary qualitative estimate in
terms of this mechanism gives a magnetic field strength six orders of magnitude
smaller than the observed field strength at . However, both these difficulties
or the dilemma of the standard model can be overcome if the central black hole
in the standard model is replaced by a supper-massive stellar object containing
magnetic monopoles ( SMSOMM, Peng and Chou, 2001). The observed power peaking
of the thermal radiation is essentially the same as our theoretical prediction.
In addition, the discovery of the ultra-strong radial magnetic field near the
Galactic Center can be naturally explained and is consistent with the
prediction of our model( Peng and Chou 2001). Furthermore, the observed
ultra-strong radial magnetic field in the vicinity of the Galactic Center may
be considered as the astronomical evidence for the existence of magnetic
monopoles as predicted by the Grand Unified Theory of particle physics.
