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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…
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…
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…
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…
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…
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…
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…
Searching for cool and cooling X-ray emitting gas in 45 galaxy clusters and groups
Haonan Liu, Ciro Pinto, Andrew C. Fabian +2
We present a spectral analysis of cool and cooling gas in 45 cool-core clusters and groups of galaxies obtained from Reflection Grating Spectrometer (RGS) XMM- observations…
AGN feedback in the Phoenix cluster
Ciro Pinto, Christopher J. Bambic, Jeremy S. Sanders +5
Active galactic nuclei (AGN) release a huge amount of energy into the intracluster medium (ICM) with the consequence of offsetting cooling and star formation (AGN feedback) in the…
Hitomi constraints on the 3.5 keV line in the Perseus galaxy cluster
Hitomi Collaboration, Felix A. Aharonian, Hiroki Akamatsu +215
High-resolution X-ray spectroscopy with Hitomi was expected to resolve the origin of the faint unidentified E=3.5 keV emission line reported in several low-resolution studies of va…
Effects of the variability of the nucleus of NGC1275 on X-ray observations of the surrounding intracluster medium
A. C. Fabian, S. A. Walker, C. Pinto +2
The active galaxy NGC1275 lies at the centre of the Perseus cluster of galaxies, which is the X-ray brightest cluster in the Sky. The nucleus shows large variability over the past…
The X-ray spectrum of the cooling-flow quasar H1821+643 : A massive black hole feeding off the intracluster medium
Christopher S. Reynolds, Anne M. Lohfink, Arif Babul +4
We present a deep Suzaku observation of H1821+643, an extremely rare example of a powerful quasar hosted by the central massive galaxy of a rich cooling-core cluster of galaxies. I…
The effect of the quasar H1821+643 on the surrounding intracluster medium: revealing the underlying cooling flow
S. A. Walker, A. C. Fabian, H. R. Russell +1
We present a detailed study of the thermodynamic properties of the intracluster medium of the only low redshift galaxy cluster to contain a highly luminous quasar, H1821+643. The c…
The X-ray luminous cluster underlying the bright radio-quiet quasar H1821+643
H. R. Russell, A. C. Fabian, J. S. Sanders +4
We present a Chandra observation of the only low redshift, z=0.299, galaxy cluster to contain a highly luminous radio-quiet quasar, H1821+643. By simulating the quasar PSF, we subt…