Perturbative growth of cosmological clustering. I: Formalism

Bharadwaj, Somnath

Please use this identifier to cite or link to this item: http://hdl.handle.net/2289/1410

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DC Field	Value	Language
dc.contributor.author	Bharadwaj, Somnath	-
dc.date.accessioned	2006-07-07T06:16:52Z	-
dc.date.available	2006-07-07T06:16:52Z	-
dc.date.issued	1994-06	-
dc.identifier.citation	Astrophysical Journal, 1994, Vol.428, p419-432	en
dc.identifier.issn	0004-637X	-
dc.identifier.issn	1538-4357 (online)	-
dc.identifier.uri	http://hdl.handle.net/2289/1410	-
dc.description.abstract	Here we rederive the hierarchy of equations for the evolution of distribution functions of various orders using a convenient parameterization. We use this to obtain equations for evolving the two-and three-point correlation functions in powers of a small parameter, viz., the initial density contrast. The correspondence of the lowest order solutions of these equations to the results from the linear theory of density perturbations is shown for an Omega=1 universe. These equations are then used to calculate, to the lowest order, the induced three-point correlation function that arises from Gaussian initial conditions in an Omega=1 universe. We obtain an expression which explicitly exhibits the spatial structure of the induced three-point correlation function. It is seen that the spatial structure of this quantity is independent of the value of Omega. We also calculate the triplet momentum. We find that the induced three-point correlation function does not have the 'hierarchical' form often assumed. We discuss possibilites of using the induced three-point correlation to interpret observational data. The formalism developed here can also be used to test a validity of different schemes to close the BBGKY hierarchy.	en
dc.format.extent	1526078 bytes	-
dc.format.mimetype	application/pdf	-
dc.language.iso	en	en
dc.publisher	The University of Chicago Press for the American Astronomical Society	en
dc.relation.uri	http://adsabs.harvard.edu/cgi-bin/bib_query?1994ApJ...428..419B	en
dc.rights	(1994) by the American Astronomical Society. Scanned images provided by the NASA ADS Data System.	en
dc.subject	COSMOLOGY	en
dc.subject	DISTRIBUTION FUNCTIONS	en
dc.subject	EVOLUTION (DEVELOPMENT)	en
dc.subject	GALACTIC STRUCTURE	en
dc.subject	BBGKY HIERARCHY	en
dc.subject	COMPUTERIZED SIMULATION	en
dc.subject	GRAVITATIONAL FIELDS	en
dc.subject	NUMERICAL ANALYSIS	en
dc.subject	PERTURBATION THEORY	en
dc.title	Perturbative growth of cosmological clustering. I: Formalism	en
dc.type	Article	en
Appears in Collections:	Research Papers (A&A)

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