Projected alignment of non-sphericities of stellar, gas, and dark matter distributions in galaxy clusters: analysis of the Horizon-AGN simulation

  title={Projected alignment of non-sphericities of stellar, gas, and dark matter distributions in galaxy clusters: analysis of the Horizon-AGN simulation},
  author={Taizo Okabe and Takahiro Nishimichi and Masamune Oguri and S{\'e}bastien Peirani and Tetsu Kitayama and Shin-ichi Sasaki and Yasushi Suto},
  journal={Monthly Notices of the Royal Astronomical Society},
While various observations measured ellipticities of galaxy clusters and alignments between orientations of the brightest cluster galaxies and their host clusters, there are only a handful of numerical simulations that implement realistic baryon physics to allow direct comparisons with those observations. Here we investigate ellipticities of galaxy clusters and alignments between various components of them and the central galaxies in the state-of-the-art cosmological hydrodynamical simulation… 

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