500 citations · 4.4k across the 69 of their papers we have counts for
68 papers
The splash beneath the largest radio bubble in a cluster core
H. R. Russell, P. E. J. Nulsen, A. C. Fabian +3
We present a 100 ks XRISM Resolve observation of the Ophiuchus cluster that measures turbulence and bulk motion in the wake of the largest radio bubble on the sky. We detect a sign…
Complex Velocity Structure of Nebular Gas in Active Galaxies Centred in Cooling X-ray Atmospheres
Marie-Joëlle Gingras, Alison L. Coil, B. R. McNamara +6
[OII] emission maps obtained with the Keck Cosmic Web Imager (KCWI) are presented for four galaxies centered in cooling X-ray cluster atmospheres. Nebular emission extending tens o…
A cooling flow around the low-redshift quasar H1821+643
H. R. Russell, P. E. J. Nulsen, A. C. Fabian +7
H1821+643 is the nearest quasar hosted by a galaxy cluster. The energy output by the quasar, in the form of intense radiation and radio jets, is captured by the surrounding hot atm…
The evolution of galaxies and clusters at high spatial resolution with AXIS
H. R. Russell, L. A. Lopez, S. W. Allen +25
Stellar and black hole feedback heat and disperse surrounding cold gas clouds, launching gas flows off circumnuclear and galactic disks and producing a dynamic interstellar medium.…
Overview of the Advanced X-ray Imaging Satellite (AXIS)
Christopher S. Reynolds, Erin A. Kara, Richard F. Mushotzky +40
The Advanced X-ray Imaging Satellite (AXIS) is a Probe-class concept that will build on the legacy of the Chandra X-ray Observatory by providing low-background, arcsecond-resolutio…
Constraints on thermal conductivity in the merging cluster Abell 2146
A. Richard-Laferrière, H. R. Russell, A. C. Fabian +9
The cluster of galaxies Abell 2146 is undergoing a major merger and is an ideal cluster to study ICM physics, as it has a simple geometry with the merger axis in the plane of the s…
Measuring the ICM velocity structure in the Ophiuchus cluster
Efrain Gatuzz, J. S. Sanders, K. Dennerl +8
We have found evidence of bulk velocities following active galactic nucleus (AGN) bubbles in the Virgo cluster and galaxy motions in the Centaurus cluster. In order to increase the…
Chemical enrichment of the ICM within the Virgo cluster I: radial profiles
Efrain Gatuzz, J. Sanders, K. Dennerl +8
We present a detailed analysis of the elemental abundances distribution of the Virgo cluster using {\it XMM-Newton} observations. We included in the analysis a new EPIC-pn energy s…
AGN Feeding and Feedback in M84: From Kiloparsec Scales to the Bondi Radius
C. J. Bambic, H. R. Russell, C. S. Reynolds +3
We present the deepest Chandra observation to date of the galaxy M84 in the Virgo Cluster, with over 840 kiloseconds of data provided by legacy observations and a recent 730 kilose…
Radio jet-ISM interaction and positive radio-mechanical feedback in Abell 1795
Prathamesh D. Tamhane, Brian R. McNamara, Helen R. Russell +8
We present XSHOOTER observations with previous ALMA, MUSE and observations to study the nature of radio-jet triggered star formation and the interaction of radio jets with th…
Does absorption against AGN reveal supermassive black hole accretion?
Tom Rose, B. R. McNamara, F. Combes +7
Galaxies often contain large reservoirs of molecular gas which shape their evolution. This can be through cooling of the gas -- which leads to star formation, or accretion onto the…
Molecular Flows in Contemporary Active Galaxies and the Efficacy of Radio-Mechanical Feedback
Prathamesh D. Tamhane, Brian R. McNamara, Helen R. Russell +4
Molecular gas flows are analyzed in 14 cluster galaxies (BCGs) centered in cooling hot atmospheres. The BCGs contain of molecular gas, much of which is…
Testing the Limits of AGN Feedback and the Onset of Thermal Instability in the Most Rapidly Star Forming Brightest Cluster Galaxies
Michael S. Calzadilla, Michael McDonald, Megan Donahue +8
We present new, deep, narrow- and broad-band Hubble Space Telescope observations of seven of the most star-forming brightest cluster galaxies (BCGs). Continuum-subtracted [O II] ma…
The structure of cluster merger shocks: turbulent width and the electron heating timescale
H. R. Russell, P. E. J. Nulsen, D. Caprioli +10
We present a new 2 Ms Chandra observation of the cluster merger Abell 2146, which hosts two huge M~2 shock fronts each ~500 kpc across. For the first time, we resolve and measure t…
The velocity structure of the Intracluster Medium of the Centaurus cluster
E. Gatuzz, J. S. Sanders, R. Canning +7
There are few direct measurements of ICM velocity structure, despite its importance for understanding clusters. We present a detailed analysis of the velocity structure of the Cent…
Turbulent magnetic fields in merging clusters: A case study of Abell 2146
Urmila Chadayammuri, John ZuHone, Paul Nulsen +2
Kelvin-Helmholtz Instabilities (KHI) along contact discontinuities in galaxy clusters have been used to constrain the strength of magnetic fields in galaxy clusters, following the…
Atmospheric pressure and molecular cloud formation in early-type galaxies
Iurii Babyk, Brian McNamara, Paul Nulsen +3
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 atmospher…
New constraints on light Axion-Like Particles using Chandra Transmission Grating Spectroscopy of the powerful cluster-hosted quasar H1821+643
Júlia Sisk Reynés, James H. Matthews, Christopher S. Reynolds +3
Axion-Like Particles (ALPs) are predicted by several Beyond the Standard Model theories, in particular, string theory. In the presence of an external magnetic field perpendicular t…
Constraining Merging Galaxy Clusters with X-ray and Lensing Simulations and Observations: The case of Abell 2146
Urmila Chadayammuri, John ZuHone, Paul Nulsen +5
Galaxy cluster mergers are a powerful laboratory for testing cosmological and astrophysical models. However, interpreting individual merging clusters depends crucially on their mer…
Suppressed cooling and turbulent heating in the core of X-ray luminous clusters RXCJ1504.1-0248 and Abell 1664
Haonan Liu, Andrew C. Fabian, Ciro Pinto +3
We present the analysis of XMM-Newton observations of two X-ray luminous cool core clusters, RXCJ1504.1-0248 and Abell 1664. The Reflection Grating Spectrometer reveals a radiative…
Evidence of runaway gas cooling in the absence of supermassive black hole feedback at the epoch of cluster formation
J. Hlavacek-Larrondo, C. L. Rhea, T. Webb +17
Cosmological simulations, as well as mounting evidence from observations, have shown that supermassive black holes play a fundamental role in regulating the formation of stars thro…
A molecular absorption line survey toward the AGN of Hydra-A
Tom Rose, A. C. Edge, F. Combes +16
We present Atacama Large Millimeter/submillimeter Array observations of the brightest cluster galaxy Hydra-A, a nearby () giant elliptical galaxy with powerful and extende…
Astrophysical limits on very light axion-like particles from Chandra grating spectroscopy of NGC 1275
Christopher S. Reynolds, M. C. David Marsh, Helen R. Russell +4
Axions/axion-like particles (ALPs) are a well motivated extension of the Standard Model and are generic within String Theory. The X-ray transparency of the intracluster medium (ICM…
The Advanced X-ray Imaging Satellite
Richard F. Mushotzky, James Aird, Amy J. Barger +41
Much of the baryonic matter in the Universe, including the most active and luminous sources, are best studied in the X-ray band. Key advances in X-ray optics and detectors have pav…