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Related papers: Dynamical state for 964 galaxy clusters from Chand…

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X-ray images of galaxy clusters often show disturbed structures that are indication of cluster mergers. As a complementary to our previous work on dynamical state of 964 clusters observed by the Chandra, we process the X-ray images for 1308…

Astrophysics of Galaxies · Physics 2025-09-29 Z. S. Yuan , J. L. Han , Z. L. Wen

We study the connection between morphology and dynamical state of the simulated galaxy clusters in $z\in[0,1.031]$ from THE THREE HUNDRED Project. We quantify cluster dynamical state using a combination of dynamical indicators from…

Cosmology and Nongalactic Astrophysics · Physics 2021-04-28 Federico De Luca , Marco De Petris , Gustavo Yepes , Weiguang Cui , Alexander Knebe , Elena Rasia

Dynamical state of galaxy clusters is closely related to their observational properties in X-ray, optical and radio wavelengths. We develop a method to diagnose the substructure and dynamical state of galaxy clusters by using photometric…

Cosmology and Nongalactic Astrophysics · Physics 2013-10-16 Z. L. Wen , J. L. Han

Numerous metrics exist to quantify the dynamical state of galaxy clusters, both observationally and within simulations. Many of these correlate strongly with one another, but it is not clear whether all of these measures probe the same…

We present the results of our dynamical state proxy measurements performed on 28 strong lensing galaxy clusters from the Sloan Giant Arcs Survey (SGAS). Using Chandra ACIS-I/S X-ray data supplemented with HST WFC3 imaging, we measure four…

While the influence of galaxy clusters on galaxy evolution is relatively well-understood, the impact of the dynamical states of these clusters is less clear. This paper series explores how the dynamical state of galaxy clusters affects…

Astrophysics of Galaxies · Physics 2025-01-08 S. Véliz Astudillo , E. R. Carrasco , J. L. Nilo Castellón , A. Zenteno , H. Cuevas

In this work, we performed an analysis of the X-ray morphology of the 118 CHEX-MATE (Cluster HEritage project with XMM-Newton - Mass Assembly and Thermodynamics at the Endpoint of structure formation) galaxy clusters, with the aim to…

Galaxy clusters provide a unique environment to study galaxy evolution. The role of cluster dynamical states in shaping the physical and morphological properties of member galaxies remains an open question. We aim to assess the impact of…

Astrophysics of Galaxies · Physics 2025-10-29 S. Véliz Astudillo , E. R. Carrasco , J. L. Nilo Castellón , A. Zenteno , H. Cuevas

This is the first in a series of papers studying the astrophysics and cosmology of massive, dynamically relaxed galaxy clusters. Here we present a new, automated method for identifying relaxed clusters based on their morphologies in X-ray…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-23 Adam B. Mantz , Steven W. Allen , R. Glenn Morris , Robert W. Schmidt , Anja von der Linden , Ondrej Urban

Using Chandra archival data, we quantify the evolution of cluster morphology with redshift. Clusters form and grow through mergers with other clusters and groups, and the amount of substructure in clusters in the present epoch and how…

Astrophysics · Physics 2009-11-10 Tesla E. Jeltema , Claude R. Canizares , Mark W. Bautz , David A. Buote

In recent years multi-wavelength observations have shown the presence of substructures related to merging events in a high fraction of galaxy clusters. Clusters can be roughly grouped into two categories -- relaxed and non-relaxed -- and a…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-11 Viral Parekh , Kurt van der Heyden , Chiara Ferrari , Garry Angus , Benne Holwerda

The classification of galaxy clusters according to their X-ray appearance is a powerful tool to discriminate between regular clusters (associated to relaxed objects) and disturbed ones (linked to dynamically active systems). The compilation…

Cosmology and Nongalactic Astrophysics · Physics 2013-01-29 Elena Rasia , Massimo Meneghetti , Stefano Ettori

We present new diagnostic metrics to probe the dynamical state of galaxy clusters. These novel metrics rely on the computation of the power spectra of the matter and gas distributions and their cross-correlation derived from cluster…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-29 Giulia Cerini , Nico Cappelluti , Priyamvada Natarajan

During cluster assembly, a cluster's virialization process leaves behind signatures that can provide information on its dynamical state. However, no clear consensus yet exists on the best way to achieve this. Therefore, we attempt to derive…

Astrophysics of Galaxies · Physics 2024-07-30 Hyowon Kim , Rory Smith , Jongwan Ko , Jong-Ho Shinn , Kyungwon Chun , Jihye Shin , Jaewon Yoo

Using a suite of cosmology simulations of a sample of $> 120$ galaxy clusters with $\log(M_{DM, vir}) \le 14.5$. We compare clusters that form in purely dark matter run and their counterparts in hydro runs and investigate 4 independent…

We recently introduced three new parameters that describe the shape of the normalized cumulative radial distribution (nCRD) of the innermost stars in globular clusters and trace the clusters dynamical evolution. Here we extend our previous…

We quantify the morphologies and dynamical states of 59 galaxy clusters using the power-ratio technique of Buote & Tsai applied to ROSAT PSPC X-ray images. The clusters exhibit a particularly strong $P_2/P_0 - P_4/P_0$ correlation in the…

Astrophysics · Physics 2009-10-28 David A. Buote , John C. Tsai

The links between the internal structure of galaxy groups and clusters and cosmological parameters are reviewed here. The mass density profiles of clusters, inferred from both optical analyses of the galaxy surface number density profile…

Astrophysics · Physics 2008-02-03 Gary A. Mamon

During cluster mergers, the intracluster gas and member galaxies undergo dynamic evolution, but at different timescales and reach different states. We collect 24 galaxy clusters in quasi-equilibrium state as indicated by the X-ray image,…

Astrophysics of Galaxies · Physics 2025-09-29 Z. S. Yuan , J. L. Han , H. Böhringer , Z. L. Wen , G. Chon

Dynamically relaxed galaxy clusters have long played a role in galaxy cluster studies because it is thought their properties can be reconstructed more precisely and with less systematics. As relaxed clusters are desirable, there exist a…

Cosmology and Nongalactic Astrophysics · Physics 2025-12-09 Kaili Cao , David J. Barnes , Mark Vogelsberger
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