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Evolution of perturbation and power spectrum in a two-component ultralight axionic universe
- Publication Year :
- 2020
- Publisher :
- arXiv, 2020.
-
Abstract
- The evolution of cosmic perturbations in a two-component ultralight axionic universe is investigated. We present the first spectral computation of perturbations in multi-component universes. A particular case composed of light extreme axions and free massive particles offers a possibility for the formation of very high-redshift massive galaxies, which are typically required to host massive early quasars. Our computation retains the information of perturbed velocities for individual axion components, opening a new avenue for setting up initial conditions for future axion dark matter simulations.<br />Comment: 10 pages, 8 figures
- Subjects :
- Physics
COSMIC cancer database
Cosmology and Nongalactic Astrophysics (astro-ph.CO)
010308 nuclear & particles physics
media_common.quotation_subject
Dark matter
Spectral density
Perturbation (astronomy)
FOS: Physical sciences
Quasar
Astrophysics
Astrophysics::Cosmology and Extragalactic Astrophysics
01 natural sciences
Galaxy
Universe
0103 physical sciences
010306 general physics
Axion
Astrophysics::Galaxy Astrophysics
media_common
Astrophysics - Cosmology and Nongalactic Astrophysics
Subjects
Details
- Database :
- OpenAIRE
- Accession number :
- edsair.doi.dedup.....9fb977fca2acadaa3744be0ffd0ee118
- Full Text :
- https://doi.org/10.48550/arxiv.2012.07602