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A multiwavelength study of the cool core cluster MACS J1447.4+0827.

Prasow-Émond, M. and Hlavacek-Larrondo, J. and Rhea, C. L. and Latulippe, M. and Gendron-Marsolais, M.-L. and Richard-Laferrière, A. and Sanders, J. S. and Edge, A. C. and Allen, S. W. and Mantz, A. and Linden, A. von der (2020) 'A multiwavelength study of the cool core cluster MACS J1447.4+0827.', Astronomical journal., 160 (3). p. 103.


Clusters of galaxies are outstanding laboratories for understanding the physics of supermassive black hole (SMBH) feedback. Here we present the first Chandra, Karl G. Jansky Very Large Array, and Hubble Space Telescope analysis of MACS J1447.4+0827 (z = 0.3755), one of the strongest cool core clusters known, in which extreme feedback from its central SMBH is needed to prevent the hot intracluster gas from cooling. Using this multiwavelength approach, including 70 ks of Chandra X-ray observations, we detect the presence of collimated jetted outflows that coincide with a southern and a northern X-ray cavity. The total mechanical power associated with these outflows (Pcav ≈ 6 × 1044 erg s−1) is roughly consistent with the energy required to prevent catastrophic cooling of the hot intracluster gas (Lcool = 1.71 ± 0.01 × 1045 erg s−1 for tcool = 7.7 Gyr), implying that powerful SMBH feedback was in place several Gyr ago in MACS J1447.7+0827. In addition, we detect the presence of a radio minihalo that extends over 300 kpc in diameter (P1.4GHz = 3.0 ± 0.3 × 1024 W Hz−1). The X-ray observations also reveal an ~20 kpc plumelike structure that coincides with optical dusty filaments that surround the central galaxy. Overall, this study demonstrates that the various physical phenomena occurring in the most nearby clusters of galaxies are also occurring in their more distant analogs.

Item Type:Article
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Publisher statement:© 2020. The American Astronomical Society. All rights reserved.
Date accepted:17 June 2020
Date deposited:09 September 2020
Date of first online publication:07 August 2020
Date first made open access:09 September 2020

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