Cold dark matter resuscitated?
Author(s) -
Martin White,
D. Scott,
Joseph Silk,
Marc Davis
Publication year - 1995
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-8711
pISSN - 0035-8711
DOI - 10.1093/mnras/276.1.l69
Subject(s) - physics , dark matter , cold dark matter , astronomy , astrophysics
The Cold Dark Matter (CDM) model has an elegant simplicitly which makes itvery predictive, but when its parameters are fixed at their `canonical' valuesits predictions are in conflict with observational data. There is, however,much leeway in the initial conditions within the CDM framework. We advocate are-examination of the CDM model, taking into account modest variation ofparameters from their canonical values. We find that CDM models with$n=0.8$--0.9 and $h=0.45$--0.50 can fit the available data. Our ``best fit''CDM model has $n=0.9$, $h=0.45$ and $C_2^{T}/C_2^{S}=0.7$. We discuss thecurrent state of observations which could definitely rule out this model.
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom