CORE
🇺🇦Â
 make metadata, not war
Services
Services overview
Explore all CORE services
Access to raw data
API
Dataset
FastSync
Content discovery
Recommender
Discovery
OAI identifiers
OAI Resolver
Managing content
Dashboard
Bespoke contracts
Consultancy services
Support us
Support us
Membership
Sponsorship
Community governance
Advisory Board
Board of supporters
Research network
About
About us
Our mission
Team
Blog
FAQs
Contact us
research
Microwave Background Anisotropies in Primeval Isocurvature Baryon Models: Constraints on the Cosmological Parameters
Authors
Takashi Chiba
Naoshi Sugiyama
Yasushi Suto
Publication date
2 November 1993
Publisher
'University of Chicago Press'
Doi
Cite
View
on
arXiv
Abstract
We have performed the most comprehensive predictions of the temperature fluctuations \dtt in the primeval isocurvature baryon models to see whether or not the models are consistent with the recent data on the cosmic microwave background anisotropies. More specifically, we computed the \dtt corresponding to the experimental set-up by the South-Pole and the Owens Valley experiments as well as the COBE satellite. The amplitudes of the predicted \dtt are normalized by means of the COBE 10
∘
^\circ
∘
data. The resulting constraints on the models are presented on
n
−
Ω
b
n - \Omega_b
n
−
Ω
b
​
plane in the case of
λ
0
=
1
−
Ω
b
\lambda_0=1-\Omega_b
λ
0
​
=
1
−
Ω
b
​
(flat models) and
λ
0
=
0
\lambda_0=0
λ
0
​
=
0
(open models), where
n
n
n
is the primordial spectral index of entropy fluctuations and
Ω
b
\Omega_b
Ω
b
​
is the present baryon density parameter. Our results imply that the PIB models cannot be reconciled with the current observations for any reasonable set of cosmological parameters.Comment: 10pages and 4figures compressed uuencoded postscript (with figures), UTAP-93-16
Similar works
Full text
Available Versions
Crossref
See this paper in CORE
Go to the repository landing page
Download from data provider
Last time updated on 05/06/2019