Testing gravity on large scales. The skewness of the galaxy distribution at z~1

C. Marinoni; L. Guzzo; A. Cappi; O. Le Fevre; A. Mazure; B. Meneux; A. Pollo; A. Iovino; H. J. McCracken; R. Scaramella; S. de la Torre; J. M. Virey; D. Bottini; B. Garilli; V. Le Brun; D. Maccagni; J. P. Picat; M. Scodeggio; L. Tresse; G. Vettolani; A. Zanichelli; C. Adami; S. Arnouts; S. Bardelli; M. Bolzonella; S. Charlot; P. Ciliegi; T. Contini; S. Foucaud; P. Franzetti; I. Gavignaud; O. Ilbert; F. Lamareille; B. Marano; G. Mathez; R. Merighi; S. Paltani; R. Pellò; L. Pozzetti; M. Radovich; D. Vergani; G. Zamorani; E. Zucca; U. Abbas; M. Bondi; A. Bongiorno; J. Brinchmann; A. Buzzi; O. Cucciati; L. de Ravel; L. Gregorini; Y. Mellier; P. Merluzzi; E. Perez-Montero; P. Taxil; S. Temporin; C. J. Walcher

arXiv · 0811.2358

Testing gravity on large scales. The skewness of the galaxy distribution at z~1

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Abstract

We study the evolution of the low-order moments of the galaxy overdensity distribution over the redshift interval 0.7<z<1.5. We find that the variance and the normalized skewness evolve over this redshift interval in a way that is remarkably consistent with predictions of first- and second-order perturbation theory. This finding confirms the standard gravitational instability paradigm over nearly 9 Gyrs of cosmic time and demonstrates the importance of accounting for the non-linear component of galaxy biasing to avoid disagreement between theory and observations.

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C. Marinoni, L. Guzzo, A. Cappi, O. Le Fevre, A. Mazure, B. Meneux, A. Pollo, A. Iovino, H. J. McCracken, R. Scaramella, S. de la Torre, J. M. Virey, D. Bottini, B. Garilli, V. Le Brun, D. Maccagni, J. P. Picat, M. Scodeggio, L. Tresse, G. Vettolani, A. Zanichelli, C. Adami, S. Arnouts, S. Bardelli, M. Bolzonella, S. Charlot, P. Ciliegi, T. Contini, S. Foucaud, P. Franzetti, I. Gavignaud, O. Ilbert, F. Lamareille, B. Marano, G. Mathez, R. Merighi, S. Paltani, R. Pellò, L. Pozzetti, M. Radovich, D. Vergani, G. Zamorani, E. Zucca, U. Abbas, M. Bondi, A. Bongiorno, J. Brinchmann, A. Buzzi, O. Cucciati, L. de Ravel, L. Gregorini, Y. Mellier, P. Merluzzi, E. Perez-Montero, P. Taxil, S. Temporin, C. J. Walcher. 2008-11-14. Testing gravity on large scales. The skewness of the galaxy distribution at z~1. https://arxiv.org/abs/0811.2358

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