Morphology of flows and buoyant bubbles in the Virgo cluster

被引:15
作者
Pavlovski, Georgi [1 ]
Kaiser, Christian R. [1 ]
Pope, Edward C. D. [1 ,2 ,3 ]
Fangohr, Hans [2 ]
机构
[1] Univ Southampton, Sch Phys & Astron, Southampton SO17 1BJ, Hants, England
[2] Univ Southampton, Sch Engn Sci, Southampton SO17 1BJ, Hants, England
[3] Univ Leeds, Sch Phys & Astron, Leeds LS2 9JT, W Yorkshire, England
基金
英国科学技术设施理事会;
关键词
methods : numerical; galaxies : active; galaxies : clusters : general; galaxies : clusters : individual : Virgo; cooling flows; galaxies : nuclei;
D O I
10.1111/j.1365-2966.2007.12622.x
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
There is growing evidence that the active galactic nuclei (AGN) associated with the central elliptical galaxy in clusters of galaxies are playing an important role in the evolution of the intracluster medium (ICM) and clusters themselves. We use high-resolution three-dimensional simulations to study the interaction of the cavities created by AGN outflows (bubbles) with the ambient ICM. The gravitational potential of the cluster is modelled using the observed temperature and density profiles of the Virgo cluster. We demonstrate the importance of the hydrodynamical Kutta-Zhukovsky forces associated with the vortex ring structure of the bubbles, and discuss possible effects of diffusive processes on their evolution.
引用
收藏
页码:1377 / 1386
页数:10
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