Chandra Serendipitous Extragalactic X-Ray Source ID (SEXSI) Optical Follow-Up

The Serendipitous Extragalactic X-ray Source Identification (SEXSI) Program is designed to expand significantly the sample of identified extragalactic hard X-ray...偶然发现河外X射线源证认（Serendipitous Extragalactic X-ray Source Identification, SEXSI）计划旨在显著扩充已证认河外硬X射线源的样本规模……