极端超高能宇宙线的天体起源 含磁单极的活动星系核模型  

Where Do the Extra High Energy Cosmic Rays Come From A Model of Active Galactic Nuclei With Magnetic Monopoles

作　　者：彭秋和[1,2,3] 

机构地区：[1]南京大学天文系,南京210009 [2]中国科学院-北京大学联合天体物理中心,北京100871 [3]中国科学院宇宙线和高能天体物理开放实验室,北京100039

出　　处：《高能物理与核物理》2002年第z1期104-111,共8页High Energy Physics and Nuclear Physics

基　　金：国家自然科学基金(10173005);重点基金(核结构和核天体物理(19935030));国家教育部博士点基金(2000028417)资助

摘　　要：首先介绍了极端超高能宇宙射线的探测现况和理论研究中的困难.从作者自己1985年前后提出的高速旋转的含磁单极的活动星系核模型出发,提出极端超高能宇宙线的天体起源的新理论模型.其核心思想在于利用磁单极催化核子衰变,产生高能带电粒子.在Lorentz变换下,含磁单极天体的径向磁场诱导出一直延伸到很远处的电场.在这个电场的加速下,荷电粒子(结合一系列物理过程)可以到达1021eV的能量.而且具有同观测相比较的流量.The origin and signature of ultra high-energy cosmic rays are still somewhat mysterious. In this paper, we present an effective acceleration mechanism for such ultra high-energy events based on supermassive stellar objects with saturation of magnetic monopoles of 't Hooft-Polyakov type in the universe. Catalyzed by magnetic monopoles, nucleons may decay to energetic charged particles and radiation, and can travel to great distance from their source because of the absence of horizon and central singularity of these supermassive stellar objects, due to Rubakov-Callan effect. These rapid rotating collapsed objects have radial magnetic fields in the local co-rotating frame. The induced electromagnetic fields in the rest frame are quite different from that of the usual dipole fields. The strength of such induced fields are very strong and decrease with the square of distance. As a result, the energetic charged particles released during nucleon decay may be further accelerated for a rather long period and the resulting energy of such cosmic rays may be far beyond 1021 eV.

关 键 词：极端超高能宇宙射线 磁单极 高速旋转的活动星系核 

分 类 号：O572.1[理学—粒子物理与原子核物理]