Revealing the Properties of Dark Matter in the Merging Cluster MACS J0025.4–1222

@article{Bradavc2008RevealingTP,
  title={Revealing the Properties of Dark Matter in the Merging Cluster MACS J0025.4–1222},
  author={M. Bradavc and S. Allen and T. Treu and H. Ebeling and R. Massey and R. Morris and A. D. Linden and Douglas Applegate Ucsb and Kipac and Stanford and UoHawaii and Edinburgh},
  journal={The Astrophysical Journal},
  year={2008},
  volume={687},
  pages={959-967}
}
We constrain the physical nature of dark matter using the newly identified massive merging galaxy cluster MACS J0025.4−1222. As was previously shown by the example of the Bullet Cluster (1E065756), such systems are ideal laboratories for detecting isolated dark matter, and distinguishing between cold dark matter (CDM) and other scenarios (e.g. self-interacting dark matter, alternative gravity theories). MACS J0025.4−1222 consists of two merging subclusters of similar richness at z = 0.586. We… Expand

Figures and Tables from this paper

Fully stripped? The dynamics of dark and luminous matter in the massive cluster collision MACSJ0553.4-3342
We present the results of a multiwavelength investigation of the very X-ray luminous galaxy cluster MACSJ0553.4-3342 ($z = 0.4270$; hereafter MACSJ0553). Combining high-resolution data obtained withExpand
The distribution of dark and luminous matter in the unique galaxy cluster merger Abell 2146.
Abell 2146 (z = 0.232) consists of two galaxy clusters undergoing a major merger. The system was discovered in previous work, where two large shock fronts were detected using the Chandra X-rayExpand
A STUDY OF THE DARK CORE IN A520 WITH THE HUBBLE SPACE TELESCOPE: THE MYSTERY DEEPENS*
We present a Hubble Space Telescope/Wide Field Planetary Camera 2 weak-lensing study of A520, where a previous analysis of ground-based data suggested the presence of a dark mass concentration. WeExpand
Dark matter distribution in the merging cluster Abell 2163
The cluster Abell 2163 is a merging system of several subclusters with complex dynamics. It presents exceptional X-rays properties (high temperature and luminosity), suggesting that it is a veryExpand
MC2:galaxy imaging and redshift analysis of the merging cluster CIZA J2242.8+5301
X-ray and radio observations of CIZA J2242.8+5301 suggest that it is a major cluster merger. Despite being well studied in the X-ray and radio, little has been presented on the cluster structure andExpand
Sparse reconstruction of the merging A520 cluster system
Merging galaxy clusters present a unique opportunity to study the properties of dark matter in an astrophysical context. These are rare and extreme cosmic events in which the bulk of the baryonicExpand
The impact of a major cluster merger on galaxy evolution in MACS J0025.4−1225
We present results of an extensive morphological, spectroscopic and photometric study of the galaxy population of MACS J0025.4-1225 (z = 0.586), a major cluster merger with clear segregation of darkExpand
Dark matter dynamics in Abell 3827: New data consistent with standard cold dark matter
We present integral field spectroscopy of galaxy cluster Abell 3827, using Atacama Large Millimetre Array (ALMA) and Very Large Telescope/Multi-Unit Spectroscopic Explorer. It reveals an unusualExpand
ON DARK PEAKS AND MISSING MASS: A WEAK-LENSING MASS RECONSTRUCTION OF THE MERGING CLUSTER SYSTEM A520*, **
Merging clusters of galaxies are unique in their power to directly probe and place limits on the self-interaction cross-section of dark matter. Detailed observations of several merging clusters haveExpand
Creation of cosmic structure in the complex galaxy cluster merger Abell 2744
We present a detailed strong lensing, weak lensing and X-ray analysis of Abell 2744 (z = 0:308), one of the most actively merging galaxy clusters known. It appears to have unleashed ‘dark’, ‘ghost’,Expand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 55 REFERENCES
Direct Constraints on the Dark Matter Self-Interaction Cross Section from the Merging Galaxy Cluster 1E 0657–56
We compare new maps of the hot gas, dark matter, and galaxies for 1E 0657-56, a cluster with a rare, high-velocity merger occurring nearly in the plane of the sky. The X-ray observations reveal aExpand
Strong and Weak Lensing United. III. Measuring the Mass Distribution of the Merging Galaxy Cluster 1ES 0657–558*
The galaxy cluster 1E0657-56 (z = 0.296) is remarkably well-suited for addressing outstanding issues in both galaxy evolution and fundamental physics. We present a reconstruction of the massExpand
A Direct Empirical Proof of the Existence of Dark Matter
We present new weak lensing observations of 1E0657-558 (z = 0.296), a unique cluster merger, that enable a direct detection of dark matter, independent of assumptions regarding the nature of theExpand
Weak-lensing mass reconstruction of the interacting cluster 1E 0657-558: Direct evidence for the existence of dark matter
We present a weak-lensing mass reconstruction of the interacting cluster 1E 0657-558, in which we detect both the main cluster and a subcluster. The subcluster is identified as a smaller cluster thatExpand
Dark Matter and Baryons in the X-Ray Luminous Merging Galaxy Cluster RX J1347.5–1145*
The galaxy cluster RX J1347.5−1145 is one of the most X-ray luminous and most massive clusters known. Its extreme mass makes it a prime target for studying issues addressing cluster formation andExpand
A Dark Core in Abell 520
The rich cluster Abell 520 (z = 0.201) exhibits truly extreme and puzzling multiwavelength characteristics. It may best be described as a "cosmic train wreck." It is a major merger showing abundantExpand
Constraints on the Self-Interaction Cross Section of Dark Matter from Numerical Simulations of the Merging Galaxy Cluster 1E 0657?56
We compare recent results from X-ray, strong lensing, weak lensing, and optical observations with numerical simulations of the merging galaxy cluster 1E 0657–56. X-ray observations reveal aExpand
The Bullet Cluster 1E0657-558 evidence shows modified gravity in the absence of dark matter
A detailed analysis of the 2006 November 15 data release X-ray surface density Σ-map and the strong and weak gravitational lensing convergence K-map for the Bullet Cluster 1E0657-558 is performed andExpand
The dynamical status of the cluster of galaxies 1E0657-56
We present the results of a new spectroscopic and photometric survey of the hot X-ray cluster 1E0657-56, at z =0 :296. We determine the presence of a low velocity dispersion subcluster, which is osetExpand
Improved constraints on dark energy from Chandra X-ray observations of the largest relaxed galaxy clusters
We present constraints on the mean matter density, � m, dark energy density, � DE, and the dark energy equation of state parameter, w, using Chandra measurements of the X-ray gas mass fraction (fgasExpand
...
1
2
3
4
5
...