Extending the scope of models for large-scale structure formation in the Universe

We propose a phenomenological generalization of the models of large-scale structure formation in the Universe by gravitational instability in two ways: we include pressure forces to model multi-streaming, and noise to model fluctuations due to neglected short-scale physical processes. We show that p...

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Detalles Bibliográficos
Autores principales: Buchert, T, Dominguez, A, Pérez-Mercader, J
Lenguaje:eng
Publicado: 1999
Materias:
Astrophysics and Astronomy
Acceso en línea:http://cds.cern.ch/record/334531
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author Buchert, T
Dominguez, A
Pérez-Mercader, J
author_facet Buchert, T
Dominguez, A
Pérez-Mercader, J
author_sort Buchert, T
collection CERN
description We propose a phenomenological generalization of the models of large-scale structure formation in the Universe by gravitational instability in two ways: we include pressure forces to model multi-streaming, and noise to model fluctuations due to neglected short-scale physical processes. We show that pressure gives rise to a viscous-like force of the same character as that one introduced in the ``adhesion model'', while noise leads to a roughening of the density field yielding a scaling behavior of its correlations.
id cern-334531
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 1999
record_format invenio
spelling cern-3345312019-09-30T06:29:59Zhttp://cds.cern.ch/record/334531engBuchert, TDominguez, APérez-Mercader, JExtending the scope of models for large-scale structure formation in the UniverseAstrophysics and AstronomyWe propose a phenomenological generalization of the models of large-scale structure formation in the Universe by gravitational instability in two ways: we include pressure forces to model multi-streaming, and noise to model fluctuations due to neglected short-scale physical processes. We show that pressure gives rise to a viscous-like force of the same character as that one introduced in the ``adhesion model'', while noise leads to a roughening of the density field yielding a scaling behavior of its correlations.astro-ph/9709218oai:cds.cern.ch:3345311999
spellingShingle Astrophysics and Astronomy
Buchert, T
Dominguez, A
Pérez-Mercader, J
Extending the scope of models for large-scale structure formation in the Universe
title Extending the scope of models for large-scale structure formation in the Universe
title_full Extending the scope of models for large-scale structure formation in the Universe
title_fullStr Extending the scope of models for large-scale structure formation in the Universe
title_full_unstemmed Extending the scope of models for large-scale structure formation in the Universe
title_short Extending the scope of models for large-scale structure formation in the Universe
title_sort extending the scope of models for large-scale structure formation in the universe
topic Astrophysics and Astronomy
url http://cds.cern.ch/record/334531
work_keys_str_mv AT buchertt extendingthescopeofmodelsforlargescalestructureformationintheuniverse
AT domingueza extendingthescopeofmodelsforlargescalestructureformationintheuniverse
AT perezmercaderj extendingthescopeofmodelsforlargescalestructureformationintheuniverse

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