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

Abstract

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

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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.