The variability of brightest cluster galaxies at high radio frequencies (2021)
Journal Article
Rose, T., Edge, A., Kiehlmann, S., Baek, J., Chung, A., Jung, T., …Sedgewick, A. (2022). The variability of brightest cluster galaxies at high radio frequencies. Monthly Notices of the Royal Astronomical Society, 509(2), 2869-2884. https://doi.org/10.1093/mnras/stab3217

Variability of a galaxy’s core radio source can be a significant consequence of active galactic nucleus accretion. However, this variability has not been well studied, particularly at high radio frequencies. As such, we report on a campaign monitorin... Read More about The variability of brightest cluster galaxies at high radio frequencies.

The ultra-steep diffuse radio emission observed in the cool-core cluster RX J1720.1+2638 with LOFAR at 54 MHz (2021)
Journal Article
Biava, N., de Gasperin, F., Bonafede, A., Edler, H., Giacintucci, S., Mazzotta, P., …van Weeren, R. (2021). The ultra-steep diffuse radio emission observed in the cool-core cluster RX J1720.1+2638 with LOFAR at 54 MHz. Monthly Notices of the Royal Astronomical Society, 508(3), 3995-4007. https://doi.org/10.1093/mnras/stab2840

Diffuse radio emission at the centre of galaxy clusters has been observed both in merging clusters on scales of Mpc, called giant radio haloes, and in relaxed systems with a cool-core on smaller scales, named mini haloes. Giant radio haloes and mini... Read More about The ultra-steep diffuse radio emission observed in the cool-core cluster RX J1720.1+2638 with LOFAR at 54 MHz.

An extreme case of galaxy and cluster co-evolution at z  = 0.7 (2021)
Journal Article
Ebeling, H., Richard, J., Smail, I., Edge, A., Koekemoer, A., & Zalesky, L. (2021). An extreme case of galaxy and cluster co-evolution at z  = 0.7. Monthly Notices of the Royal Astronomical Society, 508(3), 3663-3671. https://doi.org/10.1093/mnras/stab2725

We report the discovery of eMACS J0252.4−2100 (eMACS J0252), a massive and highly evolved galaxy cluster at z = 0.703. Our analysis of Hubble Space Telescope imaging and VLT/MUSE and Keck/DEIMOS spectroscopy of the system finds a high-velocity disper... Read More about An extreme case of galaxy and cluster co-evolution at z  = 0.7.

Excitation mechanisms in the intracluster filaments surrounding brightest cluster galaxies (2021)
Journal Article
Polles, F., Salomé, P., Guillard, P., Godard, B., Pineau des Forêts, G., Olivares, V., …Lehnert, M. (2021). Excitation mechanisms in the intracluster filaments surrounding brightest cluster galaxies. Astronomy & Astrophysics, 651, Article A13. https://doi.org/10.1051/0004-6361/202039730

Context. The excitation of the filamentary gas structures surrounding giant elliptical galaxies at the center of cool-core clusters, also known as brightest cluster galaxies (BCGs), is key to our understanding of active galactic nucleus (AGN) feedbac... Read More about Excitation mechanisms in the intracluster filaments surrounding brightest cluster galaxies.

Constraining the AGN duty cycle in the cool-core cluster MS 0735.6+7421 with LOFAR data (2021)
Journal Article
Biava, N., Brienza, M., Bonafede, A., Gitti, M., Bonnassieux, E., Harwood, J., …Vantyghem, A. (2021). Constraining the AGN duty cycle in the cool-core cluster MS 0735.6+7421 with LOFAR data. Astronomy & Astrophysics, 650, Article A170. https://doi.org/10.1051/0004-6361/202040063

Context. MS 0735.6+7421 is a galaxy cluster that hosts a central radio galaxy with a very steep spectrum. The spectrum is produced by one of the most powerful known jetted active galactic nuclei (AGN). The radio plasma, ejected at nearly light speed... Read More about Constraining the AGN duty cycle in the cool-core cluster MS 0735.6+7421 with LOFAR data.

A Massive, Clumpy Molecular Gas Distribution and Displaced AGN in Zw 3146 (2021)
Journal Article
Vantyghem, A., McNamara, B., O’Dea, C., Baum, S., Combes, F., Edge, A., …Salomé, P. (2021). A Massive, Clumpy Molecular Gas Distribution and Displaced AGN in Zw 3146. Astrophysical Journal, 910(1), Article 53. https://doi.org/10.3847/1538-4357/abe306

We present a recent Atacama Large Millimeter/submillimeter Array observation of the CO(1−0) line emission in the central galaxy of the Zw 3146 galaxy cluster (z = 0.2906). We also present updated X-ray cavity measurements from archival Chandra observ... Read More about A Massive, Clumpy Molecular Gas Distribution and Displaced AGN in Zw 3146.

The quasar feedback survey: discovering hidden Radio-AGN and their connection to the host galaxy ionized gas (2021)
Journal Article
Jarvis, M., Harrison, C., Mainieri, V., Alexander, D., Arrigoni Battaia, F., Calistro Rivera, G., …Ward, S. (2021). The quasar feedback survey: discovering hidden Radio-AGN and their connection to the host galaxy ionized gas. Monthly Notices of the Royal Astronomical Society, 503(2), 1780-1797. https://doi.org/10.1093/mnras/stab549

We present the first results from the Quasar Feedback Survey, a sample of 42 z < 0.2, [O III] luminous AGNs ( L[O III] > 1042.1 ergs s−1) with moderate radio luminosities (i.e. L1.4GHz > 1023.4 W Hz−1; median L1.4GHz = 5.9 × 1023 W Hz−1). Using high... Read More about The quasar feedback survey: discovering hidden Radio-AGN and their connection to the host galaxy ionized gas.