Search for strong galaxy-galaxy lensing in SDSS-Ⅲ BOSS  

作　　者：Xin-Lun Cheng 

机构地区：[1]Department of Astronomy, Tsinghua University

出　　处：《Research in Astronomy and Astrophysics》2020年第1期6-18,共13页天文和天体物理学研究（英文版）

基　　金：partly supported by the National Key Basic Research and Development Program of China(No.2018YFA0404501 to SM);the National Natural Science Foundation of China(Grant Nos.11821303 and 11761131004 to SM)

摘　　要：Strong lensing is one of the most spectacular views in the universe.Many cosmological applications have been proposed,but the number of such lensing systems is still limited.In this work,we applied an improved version of a previously developed spectroscopic lensing search method to the SDSS-Ⅲ BOSS and proposed a list of highly possible candidates.Follow-up CFHT Megacam imaging observations were performed for five systems,and two out of five are probably strong lensing systems with at least one image close to the central galaxy,although no counter images are detected.Strong lensing is one of the most spectacular views in the universe. Many cosmological applications have been proposed, but the number of such lensing systems is still limited. In this work, we applied an improved version of a previously developed spectroscopic lensing search method to the SDSS-Ⅲ BOSS and proposed a list of highly possible candidates. Follow-up CFHT Megacam imaging observations were performed for five systems, and two out of five are probably strong lensing systems with at least one image close to the central galaxy, although no counter images are detected.

关 键 词：gravitational lensing:strong techniques:spectroscopic methods:data analysis 

分 类 号：P142[天文地球—天体物理]