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Quasar clustering redshift distortion constraints on dark energy

M. O. Calvao·J. R. T. de Mello Neto·I. Waga
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Abstract

Redshift distortions, both geometrical and kinematical, of quasar clustering are simulated, for the Two-Degree Field QSO Redshift Survey (2QZ), showing that they are very effective to constrain the cosmological density and equation of state parameters, Omega_{m0}, Omega_{x0} and w. Particularly, it emerges that, for the cosmological constant case, the test is especially sensitive to the difference Omega_{m0} - Omega_{Lambda 0}, whereas, for the spatially flat case, it is quite competitive with future supernova and galaxy count tests, besides being complimentary to them.

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M. O. Calvao, J. R. T. de Mello Neto, I. Waga. 2001-12-14. Quasar clustering redshift distortion constraints on dark energy. https://arxiv.org/abs/astro-ph/0112361

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