Published in Journal of Modern Physics, vol. 3, issue 29, pp. 1152-1171, 2012.
http://arxiv.org/abs/1208.3662

For a PDF version of the article, click here.

ASTROPHYSICAL AND COSMOLOGICAL PROBES OF DARK MATTER

Matts Roos


Department of Physics, FI-00014 University of Helsinki, Finland


Abstract: Dark matter has been introduced to explain substantial mass deficits noted at different astronomical scales, in galaxies, groups of galaxies, clusters, superclusters and even across the full horizon. Dark matter does not interact with baryonic matter except gravitationally, and therefore its effects are sensed only on the largest scales. Although it is still unknown whether dark matter consists of particles or of a field or has some other nature, it has a rich phenomenology. This review summarizes all the astrophysical and cosmological probes that have produced overwhelming evidence for its existence. The breadth of the subject does not permit details on the observational methods (the reference list then helps), thus the review is intended to be useful mainly to cosmologists searching to model dark matter.


Table of Contents

INTRODUCTION

STARS NEAR THE GALACTIC DISK

VIRIALLY BOUND SYSTEMS
Halo density profiles
The Coma cluster
The AC 114 cluster
The Local Group
The local Universe

ROTATION CURVES OF SPIRAL GALAXIES

STRONG AND WEAK LENSING

ELLIPTICAL GALAXIES

MASS TO LUMINOSITY RATIOS AND DWARF SPHEROIDALS

SMALL GALAXY GROUPS EMITTING X-RAYS

MASS AUTOCORRELATION FUNCTIONS

COSMIC MICROWAVE BACKGROUND (CMB)

BARYONIC ACOUSTIC OSCILLATIONS (BAO)

GALAXY FORMATION IN PURELY BARYONIC MATTER?

LARGE SCALE STRUCTURES SIMULATED

DARK MATTER FROM OVERALL FITS

MERGING GALAXY CLUSTERS
The Bullet cluster 1E0657-558
The galaxy cluster pair MACS J0025.4-1222
The merging system A1758
The merging cluster Abell 2146
The merging cluster Abell 2744
"El Gordo", the fat cluster ACT-CL J0102-4915
The cluster merger DLSCL J0916.2+2951

COMMENTS AND CONCLUSIONS

REFERENCES

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