Swift AGN and Cluster Survey (SWCL). II. SDSS

We study 203 (of 442) Swift AGN and Cluster Survey extended X-ray sources located in the SDSS DR8 footprint to search for galaxy over-densities in three-dimensional space using...本研究选取位于斯隆数字巡天第八数据发布（SDSS DR8）观测天区中的203个（共计442个）斯威夫特活动星系核与星系团巡天（Swift AGN and Cluster Survey）延展X射线源，旨在借助相关手段在三维空间中搜寻星系过密度现象……