Second ROSAT all-sky survey (2RXS) source catalog

We present the second ROSAT all-sky survey source catalogue, hereafter referred to as the 2RXS catalogue. This is the second publicly released ROSAT catalogue of point-like...本文介绍第二代ROSAT（伦琴X射线天文台）全天空巡天源目录，下文简称2RXS目录。这是第二份公开发布的ROSAT类点源目录。