Professor Alastair Edge's Outputs (335)

LOFAR high-band antenna observations of the Perseus cluster: The discovery of a giant radio halo (2024)
Journal Article
van Weeren, R. J., Timmerman, R., Vaidya, V., Gendron-Marsolais, M.-L., Botteon, A., Roberts, I. D., Hlavacek-Larrondo, J., Bonafede, A., Brüggen, M., Brunetti, G., Cassano, R., Cuciti, V., Edge, A. C., Gastaldello, F., Groeneveld, C., & Shimwell, T. W. (2024). LOFAR high-band antenna observations of the Perseus cluster: The discovery of a giant radio halo. Astronomy & Astrophysics, 692, Article A12. https://doi.org/10.1051/0004-6361/202451618

The Perseus cluster is the brightest X-ray cluster in the sky and is known as a cool-core galaxy cluster. Being a very nearby cluster, it has been extensively studied. This has provided a comprehensive view of the physical processes that operate in t... Read More about LOFAR high-band antenna observations of the Perseus cluster: The discovery of a giant radio halo.

The SPT-Chandra BCG Spectroscopic Survey. I. Evolution of the Entropy Threshold for ICM Cooling and AGN Feedback in Galaxy Clusters over the Last 10 Gyr (2024)
Journal Article
Calzadilla, M. S., McDonald, M., Benson, B. A., Bleem, L. E., Croston, J. H., Donahue, M., Edge, A. C., Floyd, B., Garmire, G. P., Hlavacek-Larrondo, J., Huynh, M. T., Khullar, G., Kraft, R. P., McNamara, B. R., Noble, A. G., Romero, C. E., Ruppin, F., Somboonpanyakul, T., & Voit, G. M. (2024). The SPT-Chandra BCG Spectroscopic Survey. I. Evolution of the Entropy Threshold for ICM Cooling and AGN Feedback in Galaxy Clusters over the Last 10 Gyr. The Astrophysical Journal, 976(2), Article 169. https://doi.org/10.3847/1538-4357/ad8916

We present a multiwavelength study of the brightest cluster galaxies (BCGs) in a sample of the 95 most massive galaxy clusters selected from the South Pole Telescope Sunyaev–Zeldovich (SZ) survey. Our sample spans a redshift range of 0.3 < z < 1.7, a... Read More about The SPT-Chandra BCG Spectroscopic Survey. I. Evolution of the Entropy Threshold for ICM Cooling and AGN Feedback in Galaxy Clusters over the Last 10 Gyr.

The KALEIDOSCOPE survey : A new strong and weak gravitational lensing view of the massive galaxy cluster MACS J1423.8+2404 (2024)
Journal Article
Patel, N. R., Jauzac, M., Niemiec, A., Lagattuta, D., Mahler, G., Beauchesne, B., Edge, A., Ebeling, H., & Limousin, M. (2024). The KALEIDOSCOPE survey : A new strong and weak gravitational lensing view of the massive galaxy cluster MACS J1423.8+2404. Monthly Notices of the Royal Astronomical Society, 533(4), 4500-4514. https://doi.org/10.1093/mnras/stae2069

We present a combined strong and weak gravitational-lensing analysis of the massive galaxy cluster MACS J1423.8+2404 (z = 0.545, MACS J1423 hereafter), one of the most dynamically relaxed and massive cool-core clusters discovered in the MAssive Clust... Read More about The KALEIDOSCOPE survey : A new strong and weak gravitational lensing view of the massive galaxy cluster MACS J1423.8+2404.

Two distinct molecular cloud populations detected in massive galaxies (2024)
Journal Article
Rose, T., McNamara, B. R., Combes, F., Edge, A. C., McDonald, M., O’Sullivan, E., Russell, H., Fabian, A. C., Ferland, G., Salomé, P., & Tremblay, G. (2024). Two distinct molecular cloud populations detected in massive galaxies. Monthly Notices of the Royal Astronomical Society, 533(1), 771-794. https://doi.org/10.1093/mnras/stae1831

We present new ALMA observations of CO, CN, CS, HCN, and HCO
absorption seen against the bright and compact radio continuum sources of eight galaxies. Combined with archival observations, they reveal two distinct populations of molecular clouds, wh... Read More about Two distinct molecular cloud populations detected in massive galaxies.

First evidence of a connection between cluster-scale diffuse radio emission in cool-core galaxy clusters and sloshing features (2024)
Journal Article
Biava, N., Bonafede, A., Gastaldello, F., Botteon, A., Brienza, M., Shimwell, T. W., …Tasse, C. (2024). First evidence of a connection between cluster-scale diffuse radio emission in cool-core galaxy clusters and sloshing features. Astronomy & Astrophysics, 686, Article A82. https://doi.org/10.1051/0004-6361/202348045

Context. Radio observations of a few cool-core galaxy clusters have revealed the presence of diffuse emission on cluster scales, similar to what was found in merging clusters in the form of radio halos. These sources might suggest that a minor merger... Read More about First evidence of a connection between cluster-scale diffuse radio emission in cool-core galaxy clusters and sloshing features.

High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275 (2024)
Journal Article
Vigneron, B., Hlavacek-Larrondo, J., Rhea, C. L., Gendron-Marsolais, M., Lim, J., Reinheimer, J., …Werner, N. (2024). High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275. Astrophysical Journal, 962(1), Article 96. https://doi.org/10.3847/1538-4357/ad0fd8

We present new high-spectral-resolution observations (R = λ/Δλ = 7000) of the filamentary nebula surrounding NGC 1275, the central galaxy of the Perseus cluster. These observations have been obtained with SITELLE, an imaging Fourier transform spectro... Read More about High-spectral-resolution Observations of the Optical Filamentary Nebula Surrounding NGC 1275.

A massive multiphase plume of gas in Abell 2390’s brightest cluster galaxy (2024)
Journal Article
Rose, T., McNamara, B. R., Combes, F., Edge, A. C., Russell, H., Salomé, P., …Tremblay, G. (2024). A massive multiphase plume of gas in Abell 2390’s brightest cluster galaxy. Monthly Notices of the Royal Astronomical Society, 528(2), 3441-3455. https://doi.org/10.1093/mnras/stae213

We present new ALMA CO(2-1) observations tracing 2.2 × 1010 M. of molecular gas in Abell 2390’s brightest cluster galaxy, where half the gas is located in a one-sided plume extending 15 kpc out from the galaxy centre. This molecular gas has a smooth... Read More about A massive multiphase plume of gas in Abell 2390’s brightest cluster galaxy.

Quasar feedback survey: molecular gas affected by central outflows and by ∼10-kpc radio lobes reveal dual feedback effects in ‘radio quiet’ quasars (2023)
Journal Article
Girdhar, A., Harrison, C. M., Mainieri, V., Fernández Aranda, R., Arrigoni Battaia, F., Bianchin, M., …Ward, S. R. (2024). Quasar feedback survey: molecular gas affected by central outflows and by ∼10-kpc radio lobes reveal dual feedback effects in ‘radio quiet’ quasars. Monthly Notices of the Royal Astronomical Society, 527(3), 9322-9342. https://doi.org/10.1093/mnras/stad3453

Constraints on thermal conductivity in the merging cluster Abell 2146 (2023)
Journal Article
Edge, A., Laferriere, A. R., Russell, H. R., Fabian, A. C., Chadayammuri, U., Reynolds, C. S., …Sanders, J. S. (2023). Constraints on thermal conductivity in the merging cluster Abell 2146. Monthly Notices of the Royal Astronomical Society, 526(4), 6205-6213. https://doi.org/10.1093/mnras/stad3101

The cluster of galaxies Abell 2146 is undergoing a major merger and is an ideal cluster to study intracluster medium (ICM) physics, as it has a simple geometry with the merger axis in the plane of the sky, its distance allows us to resolve features a... Read More about Constraints on thermal conductivity in the merging cluster Abell 2146.

X-Ray Cavity Dynamics and Their Role in the Gas Precipitation in Planck Sunyaev–Zeldovich (SZ) Selected Clusters (2023)
Journal Article
Olivares, V., Su, Y., Forman, W., Gaspari, M., Andrade-Santos, F., Salome, P., …Jones, C. (2023). X-Ray Cavity Dynamics and Their Role in the Gas Precipitation in Planck Sunyaev–Zeldovich (SZ) Selected Clusters. Astrophysical Journal, 954(1), Article 56. https://doi.org/10.3847/1538-4357/ace359

We study active galactic nucleus (AGN) feedback in nearby (z < 0.35) galaxy clusters from the Planck Sunyaev–Zeldovich sample using Chandra observations. This nearly unbiased mass-selected sample includes both relaxed and disturbed clusters and may r... Read More about X-Ray Cavity Dynamics and Their Role in the Gas Precipitation in Planck Sunyaev–Zeldovich (SZ) Selected Clusters.

Redshift Evolution of the Feedback–Cooling Equilibrium in the Core of 48 SPT Galaxy Clusters: A Joint Chandra–SPT–ATCA Analysis (2023)
Journal Article
Ruppin, F., McDonald, M., Hlavacek-Larrondo, J., Bayliss, M., Bleem, L., Calzadilla, M., Edge, A., Filipović, M., Floyd, B., Garmire, G., Khullar, G., Kim, K., Kraft, R., Mahler, G., Norris, R., O’Brien, A., Reichardt, C., Somboonpanyakul, T., Stark, A., & Tothill, N. (2023). Redshift Evolution of the Feedback–Cooling Equilibrium in the Core of 48 SPT Galaxy Clusters: A Joint Chandra–SPT–ATCA Analysis. Astrophysical Journal, 948(1), Article 49. https://doi.org/10.3847/1538-4357/acc38d

We analyze the cooling and feedback properties of 48 galaxy clusters at redshifts 0.4 < z < 1.3 selected from the South Pole Telescope (SPT) catalogs to evolve like the progenitors of massive and well-studied systems at z ∼ 0. We estimate the radio p... Read More about Redshift Evolution of the Feedback–Cooling Equilibrium in the Core of 48 SPT Galaxy Clusters: A Joint Chandra–SPT–ATCA Analysis.

RXJ0437+00: constraining dark matter with exotic gravitational lenses (2023)
Journal Article
Lagattuta, D. J., Richard, J., Ebeling, H., Basto, Q., Cerny, C., Edge, A., Jauzac, M., Mahler, G., & Massey, R. (2023). RXJ0437+00: constraining dark matter with exotic gravitational lenses. Monthly Notices of the Royal Astronomical Society, 522(1), 1091-1107. https://doi.org/10.1093/mnras/stad803

We present the first strong-gravitational-lensing analysis of the galaxy cluster RX J0437.1+0043 (RXJ0437; z = 0.285). Newly obtained, deep MUSE observations, Keck/MOSFIRE near-infrared spectroscopy, and Hubble Space Telescope SNAPshot imaging reveal... Read More about RXJ0437+00: constraining dark matter with exotic gravitational lenses.

Abell 1201: detection of an ultramassive black hole in a strong gravitational lens (2023)
Journal Article
Nightingale, J., Smith, R. J., He, Q., O’Riordan, C. M., Kegerreis, J. A., Amvrosiadis, A., Edge, A. C., Etherington, A., Hayes, R. G., Kelly, A., Lucey, J. R., & Massey, R. J. (2023). Abell 1201: detection of an ultramassive black hole in a strong gravitational lens. Monthly Notices of the Royal Astronomical Society, 521(3), 3298-3322. https://doi.org/10.1093/mnras/stad587

Supermassive black holes (SMBHs) are a key catalyst of galaxy formation and evolution, leading to an observed correlation between SMBH mass MBH and host galaxy velocity dispersion σe. Outside the local Universe, measurements of MBH are usually only p... Read More about Abell 1201: detection of an ultramassive black hole in a strong gravitational lens.

Joint HST, VLT/MUSE, and XMM−Newton observations to constrain the mass distribution of the two strong lensing galaxy clusters: MACS J0242.5-2132 and MACS J0949.8+1708 (2023)
Journal Article
Allingham, J. F. V., Jauzac, M., Lagattuta, D. J., Mahler, G., Bœhm, C., Lewis, G. F., …Ettori, S. (2023). Joint HST, VLT/MUSE, and XMM−Newton observations to constrain the mass distribution of the two strong lensing galaxy clusters: MACS J0242.5-2132 and MACS J0949.8+1708. Monthly Notices of the Royal Astronomical Society, 522(1), 1118-1137. https://doi.org/10.1093/mnras/stad917

The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra (2023)
Journal Article
Alexander, D. M., Davis, T. M., Chaussidon, E., Fawcett, V., X. Gonzalez-Morales, A., Lan, T.-W., Yèche, C., Ahlen, S., Aguilar, J., Armengaud, E., Bailey, S., Brooks, D., Cai, Z., Canning, R., Carr, A., Chabanier, S., Cousinou, M.-C., Dawson, K., de la Macorra, A., Dey, A., …Zou, S. (2023). The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra. Astronomical Journal, 165(3), Article 124. https://doi.org/10.3847/1538-3881/acacfc

A key component of the Dark Energy Spectroscopic Instrument (DESI) survey validation (SV) is a detailed visual inspection (VI) of the optical spectroscopic data to quantify key survey metrics. In this paper we present results from VI of the quasar su... Read More about The DESI Survey Validation: Results from Visual Inspection of the Quasar Survey Spectra.

Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448 (2023)
Journal Article
Masterson, M., McDonald, M., Ansarinejad, B., Bayliss, M., Benson, B. A., Bleem, L. E., Calzadilla, M. S., Edge, A. C., Floyd, B., Kim, K. J., Khullar, G., & Somboonpanyakul, T. (2023). Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448. Astrophysical Journal, 944(2), Article 164. https://doi.org/10.3847/1538-4357/acae9e

We present a multiwavelength analysis of the galaxy cluster SPT-CL J0607-4448 (SPT0607), which is one of the most distant clusters discovered by the South Pole Telescope at z = 1.4010 ± 0.0028. The high-redshift cluster shows clear signs of being rel... Read More about Evidence for AGN-regulated Cooling in Clusters at z ∼ 1.4: A Multiwavelength View of SPT-CL J0607-4448.

Atmospheric Pressure and Molecular Cloud Formation in Early-type Galaxies (2023)
Journal Article
Babyk, I. V., McNamara, B., Nulsen, P., Russell, H., Edge, A., & Blitz, L. (2023). Atmospheric Pressure and Molecular Cloud Formation in Early-type Galaxies. Astrophysical Journal, 944(1), Article 69. https://doi.org/10.3847/1538-4357/acb53f

A strong correlation between atmospheric pressure and molecular gas mass is found in central cluster galaxies and early-type galaxies. This trend and a similar trend with atmospheric gas density would naturally arise if the molecular clouds condensed... Read More about Atmospheric Pressure and Molecular Cloud Formation in Early-type Galaxies.

The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies (2023)
Journal Article
Lan, T.-W., Tojeiro, R., Armengaud, E., Prochaska, J. X., Davis, T., Alexander, D. M., Raichoor, A., Zhou, R., Yèche, C., Balland, C., BenZvi, S., Berti, A., Canning, R., Carr, A., Chittenden, H., Cole, S., Cousinou, M.-C., Dawson, K., Dey, B., Douglass, K., …Zhou, Z. (2023). The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies. Astrophysical Journal, 943(1), Article 68. https://doi.org/10.3847/1538-4357/aca5fa

The Dark Energy Spectroscopic Instrument (DESI) Survey has obtained a set of spectroscopic measurements of galaxies to validate the final survey design and target selections. To assist in these tasks, we visually inspect DESI spectra of approximately... Read More about The DESI Survey Validation: Results from Visual Inspection of Bright Galaxies, Luminous Red Galaxies, and Emission-line Galaxies.

Radio jet–ISM interaction and positive radio-mechanical feedback in Abell 1795 (2022)
Journal Article
Tamhane, P. D., McNamara, B. R., Russell, H. R., Combes, F., Qiu, Y., Edge, A. C., …Carniani, S. (2023). Radio jet–ISM interaction and positive radio-mechanical feedback in Abell 1795. Monthly Notices of the Royal Astronomical Society, 519(3), 3338-3356. https://doi.org/10.1093/mnras/stac3803

We present XSHOOTER observations with previous ALMA, MUSE, and HST observations to study the nature of radio jet triggered star formation and the interaction of radio jets with the interstellar medium in the brightest cluster galaxy (BCG) in the Abel... Read More about Radio jet–ISM interaction and positive radio-mechanical feedback in Abell 1795.

Sub-kpc radio jets in the brightest central galaxy of the cool-core galaxy cluster RXJ1720.1+2638 (2022)
Journal Article
Perrott, Y. C., SM, G., Edge, A. C., Grainge, K. J. B., Green, D. A., & Saunders, R. D. E. (2023). Sub-kpc radio jets in the brightest central galaxy of the cool-core galaxy cluster RXJ1720.1+2638. Monthly Notices of the Royal Astronomical Society: Letters, 520(1), L1-L4. https://doi.org/10.1093/mnrasl/slac160

The cool-core galaxy cluster RXJ1720.1+2638 hosts extended radio emission near the cluster core, known as a minihalo. The origin of this emission is still debated and one piece of the puzzle has been the question of whether the supermassive black hol... Read More about Sub-kpc radio jets in the brightest central galaxy of the cool-core galaxy cluster RXJ1720.1+2638.