No BH at the GC and Supernova Explosion Driven by Magnetic Molopoles Qiuhe Peng (qhpeng@nju.edu.cn; Nanjing University) A strong radial magnetic field has been detected near the GC ( at ) (Eatough et al., 2013, <Nature>) The accretion plasma is clearly prevented from approaching to the GC by the strong radial magnetic field due to the magnetic freeze effect . The radiations observed near the GC cannot be emitted by the gas of the accretion disk around the BH at the GC. → No BH at the GC ! What Object is at the GC? (Peng Q. and Chou C., 2001, ApJ., 551(2001) L23-L26) Taking the RC effect ( nucleons may decay catalyzed by a magnetic monopole) as an energy source, we proposed “A super-massive star model with magnetic monopoles (SMSMM) at the GC (non black hole)” ; Five predictions in our model are confirmed by observations later. → an evidence of the existence of the magnetic monopoles .

Key roles of magnetic monopoles by RC effect A) The explosion mechanism of core collapse supernova B) Heat source of melting state in the of inner core of the Earth C) Mystery of white dwarfs failure to cool D) The gravitational wave event may be association with burst ? when → SN exploding Peak luminosity of SN