Deciphering cosmological information from redshift surveys of high-z objects - the cosmological light-cone effect and redshift-space distortion -

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dc.creatorSuto, Yasushi
dc.creatorMagira, Hiromitsu
dc.creatorJing, Y. P.
dc.creatorMatsubara, Takahiko
dc.creatorYamamoto, Kazuhiro
dc.date1999-01-14
dc.date1999-03-04
dc.date.accessioned2026-07-07T11:08:27Z
dc.date.available2026-07-07T11:08:27Z
dc.descriptionThe three-dimensional distribution of astronomical objects observed in redshift space significantly differs from the true distribution since the distance to each object cannot be determined by its redshift $z$ only; for $z \ll 1$ the peculiar velocity field contaminates the true recession velocity of the Hubble flow, while the true distance for objects at $z < 1$ sensitively depends on the (unknown and thus assumed) cosmological parameters. This hampers the effort to understand the true distribution of large-scale structure of the universe. In addition, all cosmological observations are carried out on a light-cone, the null hypersurface of an observer at $z=0$. This implies that their intrinsic properties and clustering statistics should change even within the survey volume. Therefore a proper comparison taking account of the light-cone effect is important to extract any cosmological information from redshift catalogues, especially for $z < 1$. We present recent theoretical development on the two effects -- the cosmological light-cone effect and the cosmological redshift-space distortion -- which should play key roles in observational cosmology in the 21st century.
dc.description28pages, 20 figures, minor revision to match the final version to appear in Progress of Theoretical Physics Supplement, vol. 133 (1999)
dc.identifierhttps://arxiv.org/abs/astro-ph/9901179
dc.identifierhttp://arxiv.org/abs/astro-ph/9901179
dc.identifierProg.Theor.Phys.Suppl.133:183-210,1999
dc.identifierdoi:10.1143/PTPS.133.183
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/190140
dc.subjectAstrophysics
dc.titleDeciphering cosmological information from redshift surveys of high-z objects - the cosmological light-cone effect and redshift-space distortion -
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