Small‐Scale Cosmological Perturbations: An Analytic Approach
نویسندگان
چکیده
منابع مشابه
Small Scale Cosmological Perturbations: an Analytic Approach
Through analytic techniques verified by numerical calculations, we establish general relations between the matter and cosmic microwave background (CMB) power spectra and their dependence on cosmological parameters on small scales. Fluctuations in the CMB, baryons, cold dark matter (CDM), and neutrinos receive a boost at horizon crossing. Baryon drag on the photons causes alternating acoustic pe...
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متن کاملIAS/SNS-AST-95/42, CfPA-TH-95-18, UTAP-212 SMALL SCALE COSMOLOGICAL PERTURBATIONS: AN ANALYTIC APPROACH y
Through analytic techniques veri ed by numerical calculations, we establish general relations between the matter and cosmic microwave background (CMB) power spectra and their dependence on cosmological parameters on small scales. Fluctuations in the cosmic microwave background (CMB), baryons, cold dark matter, and neutrinos receive a boost at horizon crossing. Baryon drag on the photons causes ...
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We review the study of inhomogeneous perturbations about a homogeneous and isotropic background cosmology. We adopt a coordinate based approach, but give geometrical interpretations of metric perturbations in terms of the expansion, shear and curvature of constant-time hypersurfaces and the orthogonal timelike vector field. We give the gauge transformation rules for metric and matter variables ...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1996
ISSN: 0004-637X,1538-4357
DOI: 10.1086/177989