无碰撞暗物质粒子对星系引力场的影响  

EFFECT OF THE COLLISIONLESS PAPTICLES OF DARK MATTER ON THE GRAVITATIONAL FIELD OF A GALAXY

作　　者：沈天增[1] 高建功[1] 凌海秋[1] 

机构地区：[1]新疆工学院基础部,乌鲁木齐830008

出　　处：《新疆工学院学报》1996年第4期243-247,共5页

基　　金：自治区教委科研基金

摘　　要：本文用线性近似法和选代法研究均匀无碰撞暗物质粒子对质量密度按指数律下降分布的星系引力场的影响，导出了在无碰撞暗物质粒子背景下星系引力场的引力分布．本模型给星系旋转曲线的平坦性提供了更为合理的解释．The effect of the homogeneous collisionless particles of dark matter on the gravitational field of a galaxy, whose mass density will fall exponentially with radius, is considered in the linear and successive approximations.The distributin of the gravitational field of a galaxy,when a homogeneous background of the collisionless particles of dark matter is pressent, is derived. The model offers a more reasonable explanation for the flatness of the rotation curve of galaxy.

关 键 词：无碰撞粒子 暗物质 星系 旋转曲线 引力场 

分 类 号：P15[天文地球—天文学]