Cosmological Expansion and Its Effect on Small Systems

作     者：B. Mirza M. Zamani-Nasab 

作者机构：Department of Physics Isfahan University of Technology (IUT) Isfahan (84156) Iran 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2006年第46卷第6X期

页      面：987-990页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：0ur thanks go to the Isfahan University of Technology for the financial support 

主　　题：general relativity exact solution 

摘      要：In order to study the effect of large scale cosmological expansion on small systems, we assume a Friedmann- Robertson-Walker type coordinate system in presence of a nonzero cosmological constant and derive a non-static Reissner-Nrdstr6m metric. It is an analytic function of r for all values except at r = O, which is singular. By determining the equation of motion in this metric we can estimate how expansion of the universe may affect Pioneer＇s motion. Because the metric does not have any event horizon and so high potential regions are accessible, this may help us in better understanding AGN phenomenon.