The Dynamical State of the Frontier Fields Galaxy Cluster Abell 370

@article{Molnar2020TheDS,
  title={The Dynamical State of the Frontier Fields Galaxy Cluster Abell 370},
  author={Sandor M. Molnar and Shutaro Ueda and Keiichi Umetsu},
  journal={The Astrophysical Journal},
  year={2020},
  volume={900}
}
We study the dynamics of Abell 370 (A370), a highly massive Hubble Frontier Fields galaxy cluster, using self-consistent three-dimensional N-body/hydrodynamical simulations. Our simulations are constrained by X-ray, optical spectroscopic and gravitational lensing, and Sunyaev–Zel’dovich (SZ) effect observations. Analyzing archival Chandra observations of A370 and comparing the X-ray morphology to the latest gravitational lensing mass reconstruction, we find offsets of ∼30 and ∼100 kpc between… 

The Three Hundred project: quest of clusters of galaxies morphology and dynamical state through Zernike polynomials

The knowledge of the dynamical state of galaxy clusters allows to alleviate systematics when observational data from these objects are applied in cosmological studies. Evidence of correlation

Cluster–galaxy weak lensing

Weak gravitational lensing of background galaxies provides a direct probe of the projected matter distribution in and around galaxy clusters. Here, we present a self-contained pedagogical review of

Line-of-sight Elongation and Hydrostatic Mass Bias of the Frontier Fields Galaxy Cluster Abell 370

We present a detailed weak-lensing and X-ray study of the Frontier Fields galaxy cluster Abell 370, one of the most massive known lenses on the sky, using wide-field BR C z′ Subaru/Suprime-Cam and

Locations and Morphologies of Jellyfish Galaxies in A2744 and A370

We present a study of the orbits, environments, and morphologies of 13 ram-pressure stripped galaxies in the massive, intermediate redshift (z ∼ 0.3−0.4) galaxy clusters A2744 and A370, using MUSE

A major galaxy cluster merger caught by eROSITA: weak lensing mass distribution and kinematic description

We present the weak lensing mass distribution of a triple merging cluster candidate at zphoto ∼ 0.36 belonging to a supercluster recently discovered during the eROSITA Performance Verification

Emission line galaxies in the SHARDS Frontier Fields – I. Candidate selection and the discovery of bursty Hα emitters

Emission line galaxies provide a crucial tool for the study of galaxy formation and evolution, providing a means to trace a galaxy’s star formation history or metal enrichment, and to identify

The Three Hundred project: dynamical state of galaxy clusters and morphology from multiwavelength synthetic maps

We study the connection between morphology and dynamical state of the simulated galaxy clusters in z ∈ [0, 1.031] from The Three Hundred project. We quantify cluster dynamical state using a

References

SHOWING 1-10 OF 55 REFERENCES

MERGING GALAXY CLUSTERS: OFFSET BETWEEN THE SUNYAEV–ZEL'DOVICH EFFECT AND X-RAY PEAKS

Galaxy clusters, the most massive collapsed structures, have been routinely used to determine cosmological parameters. When using clusters for cosmology, the crucial assumption is that they are

Abell 370 revisited: refurbished Hubble imaging of the first strong lensing cluster

We present a strong lensing analysis of the galaxy cluster Abell 370 (z = 0.375) based on the recent multicolour images by Advanced Camera for Surveys obtained as part of the Early Release

THE PRE-MERGER IMPACT VELOCITY OF THE BINARY CLUSTER A1750 FROM X-RAY, LENSING, AND HYDRODYNAMICAL SIMULATIONS

Since the discovery of the “Bullet Cluster,” several similar cases have been uncovered that suggest relative velocities well beyond the tail of high speed collisions predicted by the concordance ΛCDM

Off-Axis Cluster Mergers: Effects of a Strongly Peaked Dark Matter Profile

We present a parameter study of offset mergers between clusters of galaxies. Using the Eulerian hydrodynamics/N-body code COSMOS, we simulate mergers between nonisothermal, hydrostatic clusters with

A HYDRODYNAMICAL SOLUTION FOR THE “TWIN-TAILED” COLLIDING GALAXY CLUSTER “EL GORDO”

The distinctive cometary X-ray morphology of the recently discovered massive galaxy cluster “El Gordo” (ACT-CT J0102−4915; z = 0.87) indicates that an unusually high-speed collision is ongoing

Lens modelling Abell 370: crowning the final frontier field with MUSE

We present a strong lensing analysis on the massive cluster Abell 370 (A370; z = 0.375), using a combination of deep multi-band Hubble Space Telescope (HST) imaging and Multi-Unit Spectroscopic

The impact of mergers on relaxed X-ray clusters – I. Dynamical evolution and emergent transient structures

We report on the analysis of a suite of smoothed particle hydrodynamics simulations (incorporating cooling and star formation) of mergers involving idealized X-ray clusters whose initial conditions

Cluster Physics with Merging Galaxy Clusters

  • S. Molnar
  • Physics
    Front. Astron. Space Sci.
  • 2016
Collisions between galaxy clusters provide a unique opportunity to study matter in a parameter space which cannot be explored in our laboratories on Earth. In the standard \LCDM model, where the

Shocks and cold fronts in merging and massive galaxy clusters: new detections with Chandra

A number of merging galaxy clusters shows the presence of shocks and cold fronts, i.e. sharp discontinuities in surface brightness and temperature. The observation of these features requires an X-ray

Multi-phenomena Modeling of the New Bullet-like Cluster ZwCl 008.8+52 Using N-body/Hydrodynamical Simulations

We use N-body/hydrodynamical simulations to interpret the newly discovered Bullet-Cluster-like merging cluster ZwCl 0008.8+5215 (ZwCl008 hereafter), where a dramatic collision is apparent from
...