Cosmological signatures of tilted isocurvature perturbations: reionization and 21cm fluctuations

We investigate cosmological signatures of uncorrelated isocurvature perturbations whose power spectrum is blue-tilted with spectral index 2 [lap] p [lap] 4. Such an isocurvature power spectrum can promote early formation of small-scale structure, notably dark matter halos and galaxies, and may there...

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Veröffentlicht in:	JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS 2014-03, Vol.2014 (3), p.1-17, Article 001
Hauptverfasser:	Sekiguchi, Toyokazu, Tashiro, Hiroyuki, Silk, Joseph, Sugiyama, Naoshi
Format:	Artikel
Sprache:	eng
Schlagworte:	ANISOTROPY ASTROPHYSICS, COSMOLOGY AND ASTRONOMY Asymptotic properties Dark matter DISTURBANCES Fluctuation FLUCTUATIONS Formations Galactic halos GALAXIES NONLUMINOUS MATTER Perturbation methods PERTURBATION THEORY PROBES RED SHIFT Sciences of the Universe Signatures Spectra UNIVERSE
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