Licia Verde and Sabino Matarrese 2009 ApJ 706 L91 doi:10.1088/0004-637X/706/1/L91
Licia Verde1,2 and Sabino Matarrese3
Show affiliationsWe consider the description of the clustering of halos for physically motivated types of non-Gaussian initial conditions. In particular, we include non-Gaussianity of the type arising from single-field slow roll, multifields, curvaton (local type), higher-order derivative type (equilateral), vacuum-state modifications (enfolded type), and horizon-scale GR corrections type. We show that large-scale halo bias is a very sensitive tool for probing non-Gaussianity, potentially leading, for some planned surveys, to a detection of non-Gaussianity arising from horizon-scale GR corrections. In tandem with cosmic microwave background constraints, the halo bias approach can help enormously to discriminate among different shapes of non-Gaussianity and thus among models for the origin of cosmological perturbations.
galaxies: clusters: general; galaxies: halos; large-scale structure of universe
Issue 1 (2009 November 20)
Received 2009 September 21, accepted for publication 2009 October 14
Published 2009 November 2
Licia Verde and Sabino Matarrese 2009 ApJ 706 L91
Jonathan R. Trump et al. 2009 ApJ 706 797
J. I. González Hernández et al. 2009 ApJ 706 866
Markus J. Aschwanden and David Tsiklauri 2009 ApJS 185 171
G. Burbidge and W. M. Napier 2009 ApJ 706 657
Jason W. Barnes et al. 2009 ApJ 706 877
M Kohandel et al 2007 Phys. Med. Biol. 52 3665
Donald V. Reames 2009 ApJ 706 844
S.-B. Qian et al 2009 ApJ 706 L96
César Esteban et al. 2009 ApJ 700 654