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Galaxy clusters: Falling into line

Analysis of Hubble Space Telescope observations shows that the well-known alignment between the central galaxy of a galaxy cluster and its host cluster has been in place for at least ten billion years.

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Figure 1: The growth of galaxy clusters.
Figure 2: Alignments of BCGs and their host clusters.


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Correspondence to Cristóbal Sifón.

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Sifón, C. Galaxy clusters: Falling into line. Nat Astron 1, 0181 (2017).

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