What Could be the Observational Signature of Dark Matter in Globular Clusters?

Abstract

Here we investigate the possibility that some globular clusters (GCs) harbor intermediate mass black holes (BH) in their centers and are also embedded in a low-mass dark matter (DM) halo. Up to date, there is no evidence on whether or not GCs have DM in their constitution. For standard cold DM cosmology, it is expected that GCs form with their own DM halos. Other studies investigate the possibility that GCs were initially embedded in massive DM halos that evolved during the cluster lifetime. An additional intriguing question is related to the existence of intermediate mass black holes (IMBH) in the of GCs. The determination of whether GCs hold IMBHs would be able to answer important questions about GCs formation and the circumstances that gave rise to the IMBHs. DM & IMBH in the context of GCs are interesting subjects to be studied and we will perform such studies here, assuming the coexistence of both of them in some GCs. Having such information, we perform the study possible DM signals from GCs. One important subject to be studied is the DM density profile. In the inner regions of GCs, the DM density profile is still an open question of fundamental importance to DM studies, specially for the study of radio and $\gamma$-ray emission from DM annihilation in such regions (abridged).

arXiv comment18 pages, 2 figures

References in corpus (48)

• A Universal Density Profile from Hierarchical Clustering
• The Structure of Cold Dark Matter Halos
• Simulations of X-ray Clusters
• micrOMEGAs3.1 : a program for calculating dark matter observables
• Dark matter annihilation at the galactic center
• Analytical Models For Galactic Nuclei
• The Structure of Dark Matter Haloes in Hierarchical Clustering Models
• Empirical models for Dark Matter Halos. I. Nonparametric Construction of Density Profiles and Comparison with Parametric Models
• Production of Intermediate-Mass Black Holes in Globular Clusters
• The Cores of Dark Matter Dominated Galaxies: theory vs. observations
• A Dark-Matter Spike at the Galactic Center?
• The properties of Galactic globular cluster sub-systems
• An Intermediate-Mass Black Hole in the Globular Cluster G1: Improved Significance from New Keck and Hubble Space Telescope Observations
• Gemini and Hubble Space Telescope Evidence for an Intermediate Mass Black Hole in omega Centauri
• High Resolution X-ray Imaging of a Globular Cluster Core: Compact Binaries in 47Tuc
• New Limits on an Intermediate Mass Black Hole in Omega Centauri: I. Hubble Space Telescope Photometry and Proper Motions
• An intermediate-mass black hole in the centre of the globular cluster 47 Tucanae
• A Comparison of Intermediate Mass Black Hole Candidate ULXs and Stellar-Mass Black Holes
• DarkSUSY 6 : An Advanced Tool to Compute Dark Matter Properties Numerically
• A population of gamma-ray emitting globular clusters seen with the Fermi Large Area Telescope
• Globular Cluster Formation and Evolution in the Context of Cosmological Galaxy Assembly: Open Questions
• Deep radio imaging of 47 Tuc identifies the peculiar X-ray source X9 as a new black hole candidate
• Do globular clusters possess Dark Matter halos? A case study in NGC 2419
• Dark Matter Strikes Back at the Galactic Center
• Galactic Center Gamma-Ray Excess from Dark Matter Annihilation: Is There A Black Hole Spike?
• Limits on intermediate-mass black holes in six Galactic globular clusters with integral-field spectroscopy
• Giants in the globular cluster omega Centauri: dust production, mass loss and distance
• Mini-dark halos with intermediate mass black holes
• Density profiles of dark matter haloes on Galactic and Cluster scales
• Either neutralino dark matter or cuspy dark halos
• The M_BH - sigma relation for intermediate-mass black holes in globular clusters
• Inelastic extra $U(1)$ charged scalar dark matter
• Dark matter dynamics in Galactic center
• The Tidal Tails of 47 Tucanae
• A Deep X-ray Survey of the Globular Cluster Omega Centauri
• Synchrotron Emission from Dark Matter Annihilation: Predictions for Constraints from Non-detections of Galaxy Clusters with New Radio Surveys
• Probing a dark matter density spike at the Galactic Center
• Understanding the $\gamma$-ray emission from the globular cluster 47 Tuc: evidence for dark matter?
• PPPC 4 DM secondary: A Poor Particle Physicist Cookbook for secondary radiation from Dark Matter
• Discovery of a new extragalactic source population of energetic particles
• Radio Continuum Observations of 47 Tucanae and Omega Centauri: Hints for Intermediate-mass Black Holes?
• Searching in the dark: the dark mass content of the Milky Way globular clusters NGC288 and NGC6218
• Intermediate mass black holes and dark matter at the Galactic center
• Comment on "Understanding the $\gamma$-ray emission from the globular cluster 47 Tuc: evidence for dark matter?"
• Dark Matter at the Galactic Center
• Connecting the Cosmic Star Formation Rate with the Local Star Formation
• An excess of excesses examined via dark matter radio emissions from galaxies
• Reply to a comment on `Understanding the gamma-ray emission from the globular cluster 47 Tuc: evidence for dark matter?'

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