Journal article

X-ray cavities in a sample of 83 SPT-selected clusters of galaxies: Tracing the evolution of AGN feedback in clusters of galaxies out to z=1.2

J Hlavacek-Larrondo, M McDonald, BA Benson, WR Forman, SW Allen, LE Bleem, MLN Ashby, S Bocquet, M Brodwin, JP Dietrich, C Jones, J Liu, BR Saliwanchik, A Saro, T Schrabback, J Song, B Stalder, A Vikhlinin, A Zenteno

The Astrophysical Journal: an international review of astronomy and astronomical physics | American Astronomical Society | Published : 2015


X-ray cavities are key tracers of mechanical (or radio mode) heating arising from the active galactic nuclei (AGN) in brightest cluster galaxies. We report on a survey for X-ray cavities in 83 massive, high-redshift (0.4<z<1.2) clusters of galaxies selected by their Sunyaev-Zel'dovich signature in the South Pole Telescope data. Based on Chandra X-ray images, we find a total of 6 clusters having symmetric pairs of surface brightness depressions consistent with the picture of radio jets inflating X-ray cavities in the intracluster medium. The majority of these detections are of relatively low significance and require deeper follow-up data in order to be confirmed. Further, due to the limitatio..

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University of Melbourne Researchers


Awarded by NASA

Awarded by National Science Foundation

Awarded by NSF Physics Frontier Center grant

Awarded by NSF grant

Awarded by U.S. Department of Energy

Awarded by NASA through Chandra X-ray Observatory Center

Awarded by Directorate For Geosciences

Awarded by Office of Polar Programs (OPP)

Funding Acknowledgements

J.H.L. is supported by NASA through the Einstein Fellowship Program, grant number PF2-130094, NSERC through the discovery grant and Canada Research Chair programs, as well as FRQNT. Partial support is also provided by the National Science Foundation through grants ANT-0638937 and PLR-1248097, the NSF Physics Frontier Center grant PHY-0114422 to the Kavli Institute of Cosmological Physics at the University of Chicago, the Kavli Foundation, and the Gordon and Betty Moore Foundation. Support for X-ray analysis was provided by NASA through Chandra Award Numbers 12800071, 12800088, and 13800883 issued by the Chandra X-ray Observatory Center, which is operated by the Smithsonian Astrophysical Observatory for and on behalf of NASA. Galaxy cluster research at Harvard is supported by NSF grant AST-1009012 and at SAO in part by NSF grants AST-1009649 and MRI-0723073. This work was supported in part by the U.S. Department of Energy contract numbers DE-AC02-06CH11357 and DE-AC02-76SF00515.