scholarly journals Boosting small-scale structure via primordial black holes and implications for sub-GeV dark matter annihilation

2021 ◽  
Vol 103 (4) ◽  
Author(s):  
Kenji Kadota ◽  
Joseph Silk
Keyword(s):  
Black Holes ◽  
Dark Matter ◽  
Scale Structure ◽  
Small Scale ◽  
Primordial Black Holes ◽  
Dark Matter Annihilation ◽  
Small Scale Structure

scholarly journals Finite-Size Dark Matter and its Effect on Small-Scale Structure

2020 ◽  
Vol 124 (4) ◽  
Author(s):  
Xiaoyong Chu ◽  
Camilo Garcia-Cely ◽  
Hitoshi Murayama
Keyword(s):  
Dark Matter ◽  
Finite Size ◽  
Scale Structure ◽  
Small Scale ◽  
Small Scale Structure

scholarly journals Dark matter from late decays and the small-scale structure problems

2008 ◽  
Vol 77 (6) ◽  
Author(s):  
Francesca Borzumati ◽  
Torsten Bringmann ◽  
Piero Ullio
Keyword(s):  
Dark Matter ◽  
Scale Structure ◽  
Small Scale ◽  
Small Scale Structure

scholarly journals Small-scale structure of dark matter and microlensing

1997 ◽  
Vol 167 (9) ◽  
pp. 913 ◽  
Author(s):  
Aleksandr V. Gurevich ◽  
Kirill P. Zybin ◽  
V.A. Sirota
Keyword(s):  
Dark Matter ◽  
Scale Structure ◽  
Small Scale ◽  
Small Scale Structure

scholarly journals Quantifying the power spectrum of small-scale structure in semi-analytic galaxies

2019 ◽  
Vol 488 (4) ◽  
pp. 5085-5092 ◽  
Author(s):  
Sean Brennan ◽  
Andrew J Benson ◽  
Francis-Yan Cyr-Racine ◽  
Charles R Keeton ◽  
Leonidas A Moustakas ◽  
...  
Keyword(s):  
Dark Matter ◽  
Power Spectrum ◽  
Gravitational Lensing ◽  
Cold Dark Matter ◽  
Scale Structure ◽  
Small Scale ◽  
Small Scale Structure ◽  
Mass Distributions ◽  
Theoretical Predictions ◽  
Spectrum Distribution

Abstract In the cold dark matter (CDM) picture of structure formation, galaxy mass distributions are predicted to have a considerable amount of structure on small scales. Strong gravitational lensing has proven to be a useful tool for studying this small-scale structure. Much of the attention has been given to detecting individual dark matter subhaloes through lens modelling, but recent work has suggested that the full population of subhaloes could be probed using a power spectrum analysis. In this paper, we quantify the power spectrum of small-scale structure in simulated galaxies, with the goal of understanding theoretical predictions and setting the stage for using measurements of the power spectrum to test dark matter models. We use a sample of simulated galaxies generated from the galacticus semi-analytic model to determine the power spectrum distribution first in the CDM paradigm and then in a warm dark matter scenario. We find that a measurement of the slope and amplitude of the power spectrum on galaxy strong lensing scales (k ∼ 1 kpc−1) could be used to distinguish between CDM and alternate dark matter models, especially if the most massive subhaloes can be directly detected via gravitational imaging.

Sign in / Sign up

Export Citation Format

Share Document