The X-ray/SZ view of the virial region - I. Thermodynamic properties

@article{Eckert2013TheXV,
  title={The X-ray/SZ view of the virial region - I. Thermodynamic properties},
  author={Dominique Eckert and Silvano Molendi and Franco Vazza and Stefano Ettori and St{\'e}phane Paltani},
  journal={Astronomy and Astrophysics},
  year={2013},
  volume={551}
}
We measure the thermodynamic properties of cluster outer regions to provide constraints on the processes that rule the formation of large scale structures. We derived the thermodynamic properties of the intracluster gas (temperature, entropy) by combining the SZ thermal pressure from Planck and the X-ray gas density from ROSAT. This method allowed us to reconstruct for the first time temperature and entropy profiles out to the virial radius and beyond in a large sample of objects. At variance… 
The X-ray/SZ view of the virial region. II. Gas mass fraction
Several recent studies used the hot gas fraction of galaxy clusters as a standard ruler to constrain dark energy, which provides competitive results compared to other techniques. This method,
Universal thermodynamic properties of the intracluster medium over two decades in radius in the X-COP sample
Context. The hot plasma in a galaxy cluster is expected to be heated to high temperatures through shocks and adiabatic compression. The thermodynamical properties of the gas encode information on the
The XMM Cluster Outskirts Project (X-COP): Physical conditions of Abell 2142 up to the virial radius
Context. Galaxy clusters are continuously growing through the accretion of matter in their outskirts. This process induces inhomogeneities in the gas density distribution (clumping) that need to be
Suzaku X-ray Observations of the Nearest Non-Cool Core Cluster, Antlia: Dynamically Young but with Remarkably Relaxed Outskirts
We present the results of seven Suzaku mosaic observations (>200 ks in total) of the nearest non-cool core cluster, the Antlia Cluster (or Group), beyond its degree-scale virial radius in its eastern
Thermodynamics of the Coma Cluster Outskirts
We present results from a large mosaic of Suzaku observations of the Coma Cluster, the nearest and X-ray brightest hot (~8 keV), dynamically active, non-cool core system, focusing on the
The Entire Virial Radius of the Fossil Cluster RX J1159+5531: I. Gas Properties
Previous analysis of the fossil-group/cluster RX J1159+5531 with X-ray observations from a central Chandra pointing and an offset-north Suzaku pointing indicate a radial intracluster medium (ICM)
Azimuthally Resolved X-Ray Spectroscopy to the Edge of the Perseus Cluster
We present the results from extensive, new observations of the Perseus Cluster of galaxies, obtained as a Suzaku Key Project. The 85 pointings analyzed span eight azimuthal directions out to 2
X-ray mapping the outer regions of galaxy clusters at z = 0.23 and 0.45
The thermal, chemical, and kinematic properties of the potentially multi-phase circum/inter-galactic medium at the virial radii of galaxy clusters remain largely uncertain. We present an X-ray study
X-ray analysis of the galaxy group UGC 03957 beyond R200 with Suzaku
Context. In the last few years, the outskirts of galaxy clusters have been studied in detail and the analyses have brought up interesting results such as indications of possible gas clumping and the
X-ray exploration of the outskirts of the nearby Centaurus cluster using Suzaku and Chandra
We present Suzaku observations of the Centaurus cluster out to 0.95r200, taken along a strip to the north west. We have also used congruent Chandra observations of the outskirts to resolve point
...
...

References

SHOWING 1-10 OF 75 REFERENCES
The X-ray/SZ view of the virial region. II. Gas mass fraction
Several recent studies used the hot gas fraction of galaxy clusters as a standard ruler to constrain dark energy, which provides competitive results compared to other techniques. This method,
Further X-ray observations of the galaxy cluster PKS 0745-191 to the virial radius and beyond
We use new Suzaku observations of PKS 0745−191 to measure the thermodynamic properties of its intracluster medium (ICM) out to and beyond r200 (reaching 1.25r200) with better accuracy than previously
The LX—T relation and intracluster gas fractions of X-ray clusters
We re-examine the X-ray luminosity–temperature relation using a nearly homogeneous data set of 24 clusters selected for statistically accurate temperature measurements and absence of strong cooling
X-Ray Temperature and Mass Measurements to the Virial Radius of Abell 1413 with Suzaku
We present X-ray observations of the northern outskirts of the relaxed galaxy cluster A1413 with Suzaku, whose XIS instrument has the low intrinsic background needed to make measurements of these low
Probing the astrophysics of cluster outskirts
In galaxy clusters the entropy distribution of the IntraClu ster Plasma modulates the latter’s equilibrium within the D ark Matter gravitational wells, as rendered by our Supermodel. We argue the
Galaxy Clusters at the Edge: Temperature, Entropy, and Gas Dynamics Near the Virial Radius
Recently, Suzaku has produced temperature and entropy profiles, along with profiles of gas density, gas fraction, and mass, for multiple galaxy clusters out to approximately the virial radius. In
Towards a holistic view of the heating and cooling of the intracluster medium
X-ray clusters are conventionally divided into two classes: ‘cool core’ (CC) clusters and ‘non-cool core’ (NCC) clusters. Yet relatively little attention has been given to the origins of this
Gas entropy in a representative sample of nearby X-ray galaxy clusters (REXCESS): relationship to gas mass fraction
We examine the radial entropy distribution and its scaling using 31 nearby galaxy clusters from the Representative XMM-Newton Cluster Structure Survey (REXCESS), a sample in the temperature range 2-9
The Evolution of X-Ray Clusters and the Entropy of the Intracluster Medium
The thermodynamics of the diffuse, X-ray-emitting gas in clusters of galaxies is determined by gravitational processes associated with infalling gas, shock heating and adiabatic compression, and
Outer regions of the cluster gaseous atmospheres
We present a systematic study of the hot gas distribution in the outer regions of regular clusters using ROSAT PSPC data. Outside the cooling flow region, the β-model describes the observed surface
...
...