scholarly journals Constraints on massive black holes as dark matter candidates

1992 ◽  
Vol 259 (1) ◽  
pp. 27P-30P ◽  
Author(s):  
P. Hut ◽  
M. J. Rees
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Massive Black Holes

scholarly journals THE SPATIAL CLUSTERING OFROSATALL-SKY SURVEY ACTIVE GALACTIC NUCLEI. IV. MORE MASSIVE BLACK HOLES RESIDE IN MORE MASSIVE DARK MATTER HALOS

2015 ◽  
Vol 815 (1) ◽  
pp. 21 ◽  
Author(s):  
Mirko Krumpe ◽  
Takamitsu Miyaji ◽  
Bernd Husemann ◽  
Nikos Fanidakis ◽  
Alison L. Coil ◽  
...  
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Active Galactic Nuclei ◽  
Spatial Clustering ◽  
Galactic Nuclei ◽  
Dark Matter Halos ◽  
Massive Black Holes ◽  
Sky Survey

The connection between the formation of galaxies and that of their central supermassive black holes

2005 ◽  
Vol 363 (1828) ◽  
pp. 705-713
Author(s):  
Martin G. Haehnelt
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Globular Clusters ◽  
Dwarf Galaxies ◽  
High Redshift ◽  
Host Galaxies ◽  
Massive Black Holes ◽  
Essential Ingredient ◽  
Open Questions ◽  
Very High

Massive black holes appear to be an essential ingredient of massive galactic bulges but little is known yet to what extent massive black holes reside in dwarf galaxies and globular clusters. Massive black holes most likely grow by a mixture of merging and accretion of gas in their hierarchically merging host galaxies. While the hierarchical merging of dark matter structures extends to sub-galactic scales and very high redshift, it is uncertain if the same is true for the build–up of massive black holes. I discuss here some of the relevant problems and open questions.

THE GALACTIC CENTER IS ALIVE

2011 ◽  
Vol 20 (10) ◽  
pp. 1937-1940
Author(s):  
PASCAL CHARDONNET ◽  
ANNA CHIAPPINELLI
Keyword(s):  
Black Holes ◽  
Black Hole ◽  
Dark Matter ◽  
Event Horizon ◽  
Galactic Center ◽  
Direct Proof ◽  
Massive Black Holes ◽  
Central Object ◽  
Evolution Of Galaxies ◽  
Formation And Evolution

The center of our Galaxy provides a uniquely accessible laboratory. It is a rich environment of extreme density, velocity and tidal fields of stars. It is the closest example of a galactic nucleus and could give the opportunity to understand the role that massive black-holes play in the formation and evolution of galaxies. It could be used to test the effects of relativity and dark matter in the Galactic Center. If the central object is a black-hole such observation would be a milstone: the first direct proof that an event horizon, and therefore a black-hole exists. The next decade will be decisive in new discoveries.

scholarly journals Self-interacting dark matter cusps around massive black holes

2014 ◽  
Vol 89 (2) ◽  
Author(s):  
Stuart L. Shapiro ◽  
Vasileios Paschalidis
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Massive Black Holes

scholarly journals Can fermionic dark matter mimic supermassive black holes?

2019 ◽  
Vol 28 (14) ◽  
pp. 1943003 ◽  
Author(s):  
C. R. Argüelles ◽  
A. Krut ◽  
J. A. Rueda ◽  
R. Ruffini
Keyword(s):  
Black Holes ◽  
General Relativity ◽  
Dark Matter ◽  
Rotation Curve ◽  
Compact Object ◽  
Mass Range ◽  
Unified Approach ◽  
Massive Black Holes ◽  
Degeneracy Pressure ◽  
Relaxed System

We analyze the intriguing possibility of explaining both dark mass components in a galaxy: the dark matter (DM) halo and the supermassive dark compact object lying at the center, by a unified approach in terms of a quasi-relaxed system of massive, neutral fermions in general relativity. The solutions to the mass distribution of such a model that fulfill realistic halo boundary conditions inferred from observations, develop a high-density core supported by the fermion degeneracy pressure able to mimic massive black holes at the center of galaxies. Remarkably, these dense core-diluted halo configurations can explain the dynamics of the closest stars around Milky Way’s center (SgrA*) all the way to the halo rotation curve, without spoiling the baryonic bulge-disk components, for a narrow particle mass range [Formula: see text]–[Formula: see text][Formula: see text]keV.

scholarly journals Formation and early evolution of massive black holes

2006 ◽  
Vol 2 (S238) ◽  
pp. 73-82
Author(s):  
Piero Madau
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Ionization State ◽  
First Stars ◽  
Massive Black Holes ◽  
X Ray ◽  
Hard Radiation ◽  
Low Mass ◽  
The Universe

AbstractThe astrophysical processes that led to the formation of the first seed black holes and to their growth into the supermassive variety that powers bright quasars at z ∼ 6 are poorly understood. In standard ΛCDM hierarchical cosmologies, the earliest massive holes (MBHs) likely formed at redshift z ≳ 15 at the centers of low-mass (M ≳ 5 × 105 M⊙) dark matter “minihalos”, and produced hard radiation by accretion. FUV/X-ray photons from such “miniquasars” may have permeated the universe more uniformly than EUV radiation, reduced gas clumping, and changed the chemistry of primordial gas. The role of accreting seed black holes in determining the thermal and ionization state of the intergalactic medium depends on the amount of cold and dense gas that forms and gets retained in protogalaxies after the formation of the first stars. The highest resolution N-body simulation to date of Galactic substructure shows that subhalos below the atomic cooling mass were very inefficient at forming stars.

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