Astronomy and Astrophysics – Astrophysics
Scientific paper
2004-01-08
Mon. Not. R. Astron. Soc. 352, 1019-1027 (2004)
Astronomy and Astrophysics
Astrophysics
9 pages, 10 figures; replaced with version published in MNRAS; removed grey-scale versions of figures which were being include
Scientific paper
10.1111/j.1365-2966.2004.07999.x
We study the effects of halo substructure and a distribution in the concentration parameter of haloes on large-scale structure statistics. The effects on the power spectrum and bispectrum are studied on the smallest scales accessible from future surveys. We compare halo-model predictions with results based on N-body simulations, but also extend our predictions to 10-kpc scales which will be probed by future simulations. We find that weak-lensing surveys proposed for the coming decade can probe the power spectrum on small enough scales to detect substructure in massive haloes. We discuss the prospects of constraining the mass fraction in substructure in view of partial degeneracies with parameters such as the tilt and running of the primordial power spectrum.
Dolney Derek
Jain Bhuvnesh
Takada Masahiro
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