Tomomi Sunayama

TL;DR: In this article, the authors report on the small scale (0:5 < r < 40h 1 Mpc) clustering of 78895 massive (M 10 11:3 M ) galaxies at 0:2 < z < 0:4 from the first two years of data from the Baryon Oscillation Spectroscopic Survey (BOSS), to be released as part of SDSS Data Release 9 (DR9).

TL;DR: In this article, the scale-dependent assembly bias of the two-point clustering of dark matter halos is studied and shown to be influenced by halo properties besides mass, a phenomenon referred to as halo assembly bias.

TL;DR: In this article, the scale-dependent assembly bias of the two-point clustering of dark matter halos is studied and shown to be influenced by halo properties besides mass, a phenomenon referred to as halo assembly bias.

TL;DR: In this article, the authors present analyses on the splashback features around optically selected galaxy clusters detected by the independent cluster-finding algorithm CAMIRA over a wide redshift range of $0.7 < 1.0$ from the second public data release of the Hyper Suprime-Cam (HSC) Subaru Strategic Program covering the cluster catalog.

TL;DR: In this article, the authors introduce and test a scheme for generating mock catalogs rapidly using suitably derated N-body simulations to reproduce the large scale structure and gross properties of dark matter halos with high accuracy, while sacrificing details of the halo's internal structure.