Non-linearities in the Lyman-α forest and in its cross-correlation with dark matter halos

@article{Givans2022NonlinearitiesIT,
  title={Non-linearities in the Lyman-$\alpha$ forest and in its cross-correlation with dark matter halos},
  author={Jahmour J. Givans and Andreu Font-Ribera and An{\vz}e Slosar and Louise T. C. Seeyave and Christian Pedersen and Keir K. Rogers and Mathias Garny and Diego Blas and Vid Ir{\vs}i{\vc}},
  journal={Journal of Cosmology and Astroparticle Physics},
  year={2022},
  volume={2022}
}
Three-dimensional correlations of the Lyman-α (Lyα) forest and cross correlations between the Lyα forest and quasars have been measured on large scales, allowing a precise measurement of the baryon acoustic oscillation (BAO) feature at redshifts z > 2. These 3D correlations are often modelled using linear perturbation theory, but full-shape analyses to extract cosmological information beyond BAO will require more realistic models capable of describing non-linearities present at smaller scales… 

References

SHOWING 1-10 OF 83 REFERENCES

Clustering in real space and in redshift space

The Sherwood simulation suite: overview and data comparisons with the Lyman α forest at redshifts 2 ≤ z ≤ 5

We introduce a new set of large-scale, high-resolution hydrodynamical simulations of the intergalactic medium: the Sherwood simulation suite. These are performed in volumes of 103–1603h−3 comoving

The non-linear power spectrum of the Lyman alpha forest

The Lyman alpha forest power spectrum has been measured on large scales by the BOSS survey in SDSS-III at z∼ 2.3, has been shown to agree well with linear theory predictions, and has provided the

Neutrino mass bounds from confronting an effective model with BOSS Lyman-α data

We present an effective model for the one-dimensional Lyman-α flux power spectrum far above the baryonic Jeans scale. The main new ingredient is constituted by a set of two parameters that encode the

Redshift-space distortions

RSD theory is reviewed and how ubiquitous RSDs actually are is shown, and a number of potential systematic effects are considered, shamelessly highlighting recent work in which the authors have been involved.

Limits on the Light Dark Matter-Proton Cross Section from Cosmic Large-Scale Structure.

We set the strongest limits to date on the velocity-independent dark matter (DM)-proton cross section σ for DM masses m=10  keV to 100 GeV, using large-scale structure traced by the Lyman-alpha

Cosmology beyond BAO from the 3D distribution of the Lyman-α forest

We propose a new method for fitting the full-shape of the Lyman-α (Ly α) forest 3D correlation function in order to measure the Alcock-Paczynski (AP) effect. Our method preserves the robustness of

The Lyα forest flux correlation function: a perturbation theory perspective

The Lyα forest provides one of the best means of mapping large-scale structure at high redshift, including our tightest constraint on the distance-redshift relation before cosmic noon. We describe

General framework for cosmological dark matter bounds using N -body simulations

We present a general framework for obtaining robust bounds on the nature of dark matter using cosmological $N$-body simulations and Lyman-alpha forest data. We construct an emulator of hydrodynamical
...