87 citations · 627 across the 29 of their papers we have counts for
16 papers · 1 filter
New constraints on the linear growth rate using cosmic voids in the SDSS DR12 datasets
Ixandra Achitouv
We present a new analysis of the inferred growth rate of cosmic structure measured around voids, using the LOWZ and the CMASS samples in the twelfth data release (DR12) of SDSS. Us…
The environmental dependence of the baryon acoustic peak in the Baryon Oscillation Spectroscopic Survey CMASS sample
Chris Blake, Ixandra Achitouv, Angela Burden +1
The environmental dependence of galaxy clustering encodes information about the physical processes governing the growth of cosmic structure. We analyze the baryon acoustic peak as…
Modelling the environmental dependence of the growth rate
Ixandra Achitouv, Yan-Chuan Cai
The growth rate of cosmic structure is a powerful cosmological probe for extracting information on the gravitational interactions and dark energy. In the late time Universe, the gr…
An improved model of redshift-space distortions around voids: application to quintessence dark energy
Ixandra Achitouv
Using cosmic voids to probe the growth rate of cosmic structure, and hence the nature of dark energy, is particularly interesting in the context of modified gravity theories that r…
Testing the imprint of non-standard cosmologies on void profiles using Monte Carlo random walks
Ixandra Achitouv
Using a Monte Carlo random walks of a log-normal distribution, we show how to qualitatively study void properties for non-standard cosmologies. We apply this method to an f(R) modi…
Choose to smooth: Gaussian streaming with the truncated Zel'dovich approximation
Michael Kopp, Cora Uhlemann, Ixandra Achitouv
We calculate the dark matter halo correlation function in redshift space using the Gaussian streaming model (GSM). To determine the scale dependent functions entering the streaming…