activity
20072026
most citedImproved constraints on dark energy from Chandra X-ray observations of the largest relaxed galaxy clusters

634 citations · 790 across the 11 of their papers we have counts for

collaborators

11 papers

astro-ph.CO2026

SPT-CL J0417-4748: A Deep Chandra Study of a Relaxed Galaxy Cluster Without Central Star Formation

Taweewat Somboonpanyakul, Adam B. Mantz, Steven W. Allen +7

We present an in-depth Chandra X-ray analysis of the galaxy cluster SPT-CL J04174748 (hereafter SPT J0417), at z = 0.58, with a focus on its thermodynamic properties and the app…

astro-ph.CO2026

Multiwavelength Characterization of a Dynamically Relaxed Cool Core Galaxy Cluster at

Anthony M. Flores, Adam B. Mantz, Steven W. Allen +5

We present imaging and spectroscopic analyses of Chandra and XMM-Newton observations of ACT-CL J0123.50428, one of the most massive, highest redshift galaxy clusters detected wi…

astro-ph.CO2026★ 3 cited

Deep Chandra Observations of the z = 1.16 Relaxed, Cool-core Galaxy Cluster SPT-CL J2215-3537

Haley R. Stueber, Adam B. Mantz, Steven W. Allen +10

Galaxy clusters serve as a unique and valuable laboratory for probing cosmological models and understanding astrophysics at the high-mass limit of structure formation. Clusters tha…

astro-ph.HE2025

The QPO in REJ1034+396 originates in the hot corona

Chloe Taylor, Daniel Wilkins, Steven Allen

REJ1034+396 is one of the few active galactic nuclei with a significant quasi-periodic oscillation (QPO). The QPO has been observed in over 1 Ms of XMM-Newton observations spanning…

astro-ph.GA2025★ 5 cited

Directly Imaging the Cooling Flow in the Phoenix Cluster

Michael Reefe, Michael McDonald, Marios Chatzikos +14

In the centers of many galaxy clusters, the hot (10 K) intracluster medium (ICM) can become dense enough that it should cool on short timescales. However, the low measure…

astro-ph.GA2025

HST Observations within the Sphere of Influence of the Powerful Supermassive Black Hole in PKS0745-191

Julie Hlavacek-Larrondo, Hyunseop Choi, Minghao Guo +18

We present Space Telescope Imaging Spectrograph observations from the Hubble Space Telescope of the supermassive black hole (SMBH) at the center of PKS0745-191, a brightest cluster…

astro-ph.GA2025

Cold Gas and Star Formation in the Phoenix Cluster with JWST

Michael Reefe, Michael McDonald, Marios Chatzikos +16

We present integral field unit observations of the Phoenix Cluster with the JWST Mid-infrared Instrument's Medium Resolution Spectrometer (MIRI/MRS). We focus this study on the mol…

astro-ph.CO2017★ 58 cited

The XXL Survey: XVII. X-ray and Sunyaev-Zel'dovich Properties of the Redshift 2.0 Galaxy Cluster XLSSC 122

Adam B. Mantz, Zubair Abdulla, Steven W. Allen +7

We present results from a 100 ks XMM-Newton observation of galaxy cluster XLSSC 122, the first massive cluster discovered through its X-ray emission at . The data provid…

astro-ph.HE2014★ 23 cited

ASTRO-H White Paper - Clusters of Galaxies and Related Science

T. Kitayama, M. Bautz, M. Markevitch +22

The next generation X-ray observatory ASTRO-H will open up a new dimension in the study of galaxy clusters by achieving for the first time the spectral resolution required to measu…

astro-ph.CO2010★ 67 cited

High redshift X-ray cooling-core cluster associated with the luminous radio loud quasar 3C186

Aneta Siemiginowska, D. J. Burke, Thomas L. Aldcroft +5

We present the first results from a new, deep (200ks) Chandra observation of the X-ray luminous galaxy cluster surrounding the powerful (L ~10^47 erg/s), high-redshift (z=1.067), c…

astro-ph2007★ 634 cited

Improved constraints on dark energy from Chandra X-ray observations of the largest relaxed galaxy clusters

S. W. Allen, D. A. Rapetti, R. W. Schmidt +3

We present constraints on the mean matter density, Omega_m, dark energy density, Omega_de, and the dark energy equation of state parameter, w, using Chandra measurements of the X-r…