The Bulletin of The Korean Astronomical Society (천문학회보)
- Volume 43 Issue 2
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- Pages.38.1-38.1
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- 2018
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- 1226-2692(pISSN)
A Hydrodynamical Simulation of the Off-Axis Cluster Merger Abell 115
- Lee, Wonki (Yonsei University) ;
- Kim, Mincheol (Yonsei University) ;
- Jee, Myungkook James (Yonsei University)
- Published : 2018.10.10
Abstract
A merging galaxy cluster is a useful laboratory to study many interesting astrophysical processes such as intracluster medium heating, particle acceleration, and possibly dark matter self-interaction. However, without understanding the merger scenario of the system, interpretation of the observational data is severely limited. In this work, we focus on the off-axis binary cluster merger Abell 115, which possesses many remarkable features. The cluster has two cool cores in X-ray with disturbed morphologies and a single giant radio relic just north of the northern X-ray peak. In addition, there is a large discrepancy (almost a factor of 10) in mass estimate between weak lensing and dynamical analyses. To constrain the merger scenario, we perform a hydrodynamical simulation with the adaptive mesh refinement code RAMSES. We use the multi-wavelength observational data including X-ray, weak-lensing, radio, and optical spectroscopy to constrain the merger scenario. We present detailed comparisons between the simulation results and these multi-wavelength observations.
Keywords