The merging galaxy cluster A520 --- a broken-up cool core, a dark subcluster, and an X-ray channel

  title={The merging galaxy cluster A520 --- a broken-up cool core, a dark subcluster, and an X-ray channel},
  author={Q. Wang and M. Markevitch and S. Giacintucci},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
We present results from a deep Chandra X-ray observation of a merging galaxy cluster A520. A high-resolution gas temperature map, after the subtraction of the cluster-scale emission, reveals a long trail of dense, cool clumps --- apparently the fragments of a cool core that has been completely stripped from the infalling subcluster by ram pressure. In this scenario, we can assume that the clumps are still connected by the magnetic field lines. The observed temperature variations imply that… Expand

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