천문학회보 (The Bulletin of The Korean Astronomical Society)
- 제41권1호
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- Pages.71.2-71.2
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- 2016
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- 1226-2692(pISSN)
Weak-Lensing Study of Galaxy Cluster PLCKG287.0+32.9
- Finner, Kyle (Yonsei University, Department of Astronomy) ;
- Jee, Myungkook James (Yonsei University, Department of Astronomy)
- 발행 : 2016.04.12
초록
Merging galaxy clusters, such as PLCKG287.0+32.9, provide a window into the formation process of the large scale structure of the universe. PLCKG287.0+32.9 is an enormous merging galaxy cluster with mass estimated to be ~10^15 Msun. It hosts a pair of mega-parsec sized radio relics with projected offsets from the X-ray center of approximately 350kpc and 2.7Mpc, suggesting a NW-SE merging scenario with relics originating from two separate passes (Bonafede et al. 2014). A detected radio halo coincides with the center of x-ray emission. We present the motivation for our weak lensing study of the merging galaxy cluster PLCKG287.0+32.9 using recent Subaru optical imaging. We discuss the basics of weak-lensing and the criteria for source selection. In addition, we describe our method of PSF modeling and mass reconstruction.
키워드