Search for strong galaxy-galaxy lensing in SDSS-III BOSS
Xinlun Cheng
TL;DR
This paper presents an improved spectroscopic method to identify strong galaxy-galaxy lensing systems in SDSS-III BOSS data, resulting in candidate systems and confirming two probable lenses through follow-up imaging.
Contribution
The study introduces an enhanced lensing search technique applied to SDSS-III BOSS, increasing the potential to discover strong lensing systems.
Findings
Identified several candidate strong lensing systems in SDSS-III BOSS data.
Follow-up imaging confirmed two probable strong lenses.
No counter images detected in the confirmed systems.
Abstract
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.
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