Dark matter, density perturbations, and structure formation
نویسندگان
چکیده
منابع مشابه
Dark Matter, Density Perturbations and Structure Formation
his paper provides a review of the variants of dark matter (CDM, HDM) which are thought to be fundamental components of the universe and their role in origin and evolution of structures. Introduction The origin and evolution of large scale structure is today the outstanding problem in cosmology. This is the most fundamental question we can ask about the universe whose solution should help us to...
متن کاملDark Matter and Structure Formation
This chapter aims to present an introduction to current research on the nature of the cosmological dark matter and the origin of galaxies and large scale structure within the standard theoretical framework: gravitational collapse of fluctuations as the origin of structure in the expanding universe. General relativistic cosmology is summerized, and the data on the basic cosmological parameters (...
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The formation of structure in the Universe offers some of the most powerful evidence in favour of the existence of dark matter in the Universe. We summarize recent work by ourselves and our collaborators, using linear and quasi-linear theory to probe the allowed parameter space of structure formation models with perturbations based on the inflationary cosmology. Observations used include large ...
متن کاملConstraining Dark Matter candidates from structure formation
We show that collisional damping of adiabatic primordial fluctuations yields constraints on the possible range of mass and interaction rates of Dark Matter particles. Our analysis relies on a general classification of Dark Matter candidates, that we establish independently of any specific particle theory or model. From a relation between the collisional damping scale and the Dark Matter interac...
متن کاملStructure Formation with Generalized Dark Matter
The next generation of cosmic microwave background (CMB) experiments, galaxy surveys, and highredshift observations can potentially determine the nature of the dark matter observationally. With this in mind, we introduce a phenomenological model for a generalized dark matter (GDM) component and discuss its e†ect on large-scale structure and CMB anisotropies. Specifying the gravitational inÑuenc...
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ژورنال
عنوان ژورنال: Astronomy Reports
سال: 2007
ISSN: 1063-7729,1562-6881
DOI: 10.1134/s1063772907030018