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Fig. 12

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Merger scenario for A754. Top panels: schematic representation of the proposed merger dynamics. (a) Two clusters undergo a slightly off-axis collision nearly in the plane of the sky. (b) As clusters approach, the gas in between is squeezed and propagates in equatorial directions. (c) In the current configuration of A754, tongues of cold and low entropy plasma develop and shock fronts propagate in opposite directions roughly along the merger axis. Bottom panels: temperature slices (for the z projection) from an idealized simulation by ZuHone et al. (2018) of a 1:1 merger with an impact parameter of 500 kpc taken at different times and used to support our sketched merger scenario of A754.

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