The halo model with beyond-linear halo bias: unbiasing cosmological constraints from galaxy-galaxy lensing and clustering. (arXiv:2202.01790v2 [astro-ph.CO] UPDATED)

The halo model with beyond-linear halo bias: unbiasing cosmological constraints from galaxy-galaxy lensing and clustering. (arXiv:2202.01790v2 [astro-ph.CO] UPDATED)
<a href="http://arxiv.org/find/astro-ph/1/au:+Mahony_C/0/1/0/all/0/1">Constance Mahony</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Dvornik_A/0/1/0/all/0/1">Andrej Dvornik</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Mead_A/0/1/0/all/0/1">Alexander Mead</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Heymans_C/0/1/0/all/0/1">Catherine Heymans</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Asgari_M/0/1/0/all/0/1">Marika Asgari</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Hildebrandt_H/0/1/0/all/0/1">Hendrik Hildebrandt</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Miyatake_H/0/1/0/all/0/1">Hironao Miyatake</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Nishimichi_T/0/1/0/all/0/1">Takahiro Nishimichi</a>, <a href="http://arxiv.org/find/astro-ph/1/au:+Reischke_R/0/1/0/all/0/1">Robert Reischke</a>

We determine the error introduced in a joint halo model analysis of
galaxy-galaxy lensing and galaxy clustering observables when adopting the
standard approximation of linear halo bias. Considering the Kilo-Degree Survey,
we forecast that ignoring the non-linear halo bias would result in up to
5$sigma$ offsets in the recovered cosmological parameters describing structure
growth, $S_8$, and the matter density parameter, $Omega_{mathrm{m}}$. We
include the scales $10^{-1.3}<r_{rm{p}} / h^{-1}, mathrm{Mpc}<10$ in the
data vector, and the direction of these offsets are shown to depend on the
freedom afforded to the halo model through other nuisance parameters. We
conclude that a beyond-linear halo bias correction must therefore be included
in future cosmological halo model analyses of large-scale structure observables
on non-linear scales.

We determine the error introduced in a joint halo model analysis of
galaxy-galaxy lensing and galaxy clustering observables when adopting the
standard approximation of linear halo bias. Considering the Kilo-Degree Survey,
we forecast that ignoring the non-linear halo bias would result in up to
5$sigma$ offsets in the recovered cosmological parameters describing structure
growth, $S_8$, and the matter density parameter, $Omega_{mathrm{m}}$. We
include the scales $10^{-1.3}<r_{rm{p}} / h^{-1}, mathrm{Mpc}<10$ in the
data vector, and the direction of these offsets are shown to depend on the
freedom afforded to the halo model through other nuisance parameters. We
conclude that a beyond-linear halo bias correction must therefore be included
in future cosmological halo model analyses of large-scale structure observables
on non-linear scales.

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