Constraining radio mode feedback in galaxy clusters with the cluster radio AGNs properties to z ∼ 1

N. Gupta*, M. Pannella, J. J. Mohr, M. Klein, E. S. Rykoff, J. Annis, S. Avila, F. Bianchini, D. Brooks, E. Buckley-Geer, E. Bulbul, A. Carnero Rosell, M. Carrasco Kind, J. Carretero, I. Chiu, M. Costanzi, L. N. da Costa, J. De Vicente, S. Desai, J. P. DietrichP. Doel, S. Everett, A. E. Evrard, J. García-Bellido, E. Gaztanaga, D. Gruen, R. A. Gruendl, J. Gschwend, G. Gutierrez, D. L. Hollowood, K. Honscheid, D. J. James, T. Jeltema, K. Kuehn, C. Lidman, M. Lima, M. A. G. Maia, J. L. Marshall, M. McDonald, F. Menanteau, R. Miquel, R. L. C. Ogando, A. Palmese, F. Paz-Chinchon, A. A. Plazas, C. L. Reichardt, E. Sanchez, B. Santiago, A. Saro, V. Scarpine, R. Schindler, M. Schubnell, S. Serrano, I. Sevilla-Noarbe, X. Shao, M. Smith, J. P. Stott, V. Strazzullo, E. Suchyta, M. E. C. Swanson, V. Vikram, A. Zenteno

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


We study the properties of the Sydney University Molonglo Sky Survey (SUMSS) 843 MHz radio active galactic nuclei (AGNs) population in galaxy clusters from two large catalogues created using the Dark Energy Survey (DES): ∼11800 optically selected RM-Y3 and ∼1000 X-ray selected MARD-Y3 clusters. We show that cluster radio loud AGNs are highly concentrated around cluster centres to z ∼ 1. We measure the halo occupation number for cluster radio AGNs above a threshold luminosity, finding that the number of radio AGNs per cluster increases with cluster halo mass as N ∝ M1.2 ± 0.1 (N ∝ M0.68 ± 0.34) for the RM-Y3 (MARD-Y3) sample. Together, these results indicate that radio mode feedback is favoured in more massive galaxy clusters. Using optical counterparts for these sources, we demonstrate weak redshift evolution in the host broad-band colours and the radio luminosity at fixed host galaxy stellar mass. We use the redshift evolution in radio luminosity to break the degeneracy between density and luminosity evolution scenarios in the redshift trend of the radio AGNs luminosity function (LF). The LF exhibits a redshift trend of the form (1 + z)γ in density and luminosity, respectively, of γD = 3.0 ± 0.4 and γP = 0.21 ± 0.15 in the RM-Y3 sample, and γ D = 2.6 ± 0.7 and γ P = 0.31 ± 0.15 in MARD-Y3. We discuss the physical drivers of radio mode feedback in cluster AGNs, and we use the cluster radio galaxy LF to estimate the average radio-mode feedback energy as a function of cluster mass and redshift and compare it to the core (<0.1R500) X-ray radiative losses for clusters at z < 1.

Original languageEnglish
Pages (from-to)1705-1723
Number of pages19
JournalMonthly Notices of the Royal Astronomical Society
Issue number2
Publication statusPublished - May 2020


  • cosmology: observations
  • galaxies: active
  • galaxies: clusters: general
  • galaxies: luminosity function, mass function
  • submillimeter: galaxies


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