A unified model for the spatial and mass distribution of subhaloes

Abstract

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hbt+: an improved code for finding subhaloes and building merger trees in cosmological simulations

“…6 we show the ratio between the two fitted mass functions. For Milky Way sized and cluster sized halos, the ratio is around 0.1 at the low mass end, consistent with the findings of Han et al (2016). If tidal stripping of the subhalos is independent of subhalo mass, then the peak mass and final mass functions are expected to have the same shape.…”

“…It has also been shown that the slope of α is conserved between the unevolved and evolved subhalo mass function (Han et al 2016). In Fig.…”

“…Thus we refrain from fitting this slope. Instead, we fix α1 = 0.95 according to the result of Han et al (2016) using much higher resolution data. As shown in Fig.…”

Constraints on the identity of the dark matter from strong gravitational lenses

“…The COCO volume contains only a few dark matter haloes of mass larger than 10 13 h −1 Mpc, making the estimation of f sub noisy. We therefore make use of the analytical formula for f sub (R) derived by Han et al (2016). For dark matter haloes of mass in the range [10 13 , 10 14 ] h −1 M , f sub can be approximated as…”

“…We assume the probability distribution of particle mass is uniform for keV WDM, so we adopted a flat prior for m c in log space. In this paper, we use the f E model in Han et al (2016) to generate mock observations. In a real universe, different galaxy formation processes can influence the survival of substructures.…”