Evidence for quadratic tidal tensor bias from the halo bispectrum

@article{Baldauf2012EvidenceFQ,
  title={Evidence for quadratic tidal tensor bias from the halo bispectrum},
  author={Tobias Baldauf and Uros Seljak and Vincent Desjacques and Patrick Mcdonald},
  journal={Physical Review D},
  year={2012},
  volume={86},
  pages={083540}
}
The relation between the clustering properties of luminous matter in the form of galaxies and the underlying dark matter distribution is of fundamental importance for the interpretation of ongoing and upcoming galaxy surveys. The so-called local bias model, where galaxy density is a function of local matter density, is frequently discussed as a means to infer the matter power spectrum or correlation function from the measured galaxy correlation. However, gravitational evolution generates a term… Expand

Figures and Tables from this paper

Non-local bias in the halo bispectrum with primordial non-Gaussianity
Primordial non-Gaussianity can lead to a scale-dependent bias in the density of collapsed halos relative to the underlying matter density. The galaxy power spectrum already provides constraints onExpand
Tidal alignment of galaxies
We develop an analytic model for galaxy intrinsic alignments (IA) based on the theory of tidal alignment. We calculate all relevant nonlinear corrections at one-loop order, including effects fromExpand
Relativistic wide-angle galaxy bispectrum on the light-cone
Given the important role that the galaxy bispectrum has recently acquired in cosmology and the scale and precision of forthcoming galaxy clustering observations, it is timely to derive the fullExpand
Constraining the halo bispectrum in real and redshift space from perturbation theory and non-linear stochastic bias
We present a method to produce mock galaxy catalogues with efficient perturbation theory schemes, which match the number density, power spectra and bispectra in real and in redshift space from N-bodyExpand
Covariance of the galaxy angular power spectrum with the halo model
As the determination of density fluctuations becomes more precise with larger surveys, it becomes more important to account for the increased covariance due to the non-linearity of the field. Here IExpand
Bias loop corrections to the galaxy bispectrum
The combination of the power spectrum and bispectrum is a powerful way of breaking degeneracies between galaxy bias and cosmological parameters, enabling us to maximize the constraining power from Expand
Galaxy bispectrum, primordial non-Gaussianity and redshift space distortions
Measurements of the non-Gaussianity of the primordial density field have the power to considerably improve our understanding of the physics of inflation. Indeed, if we can increase the precision ofExpand
Measuring bias via the consistency relations of the large scale structure
Consistency Relations (CR) for the Large Scale Structure are exact equalities between correlation functions of different order. These relations descend from the equivalence principle and hold forExpand
Lagrangian bias in the local bias model
It is often assumed that the halo-patch fluctuation field can be written as a Taylor series in the initial Lagrangian dark matter density fluctuation field. We show that if this Lagrangian bias isExpand
Primordial non-Gaussianity in the large-scale structure of the Universe
Primordial fluctuations are expected to be produced in the very early Universe, sourcing the anisotropies in the cosmic microwave background and seeding the formation of structures. In this thesis weExpand
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 76 REFERENCES
Gravity and Large-Scale Nonlocal Bias
The relationship between galaxy and matter overdensities, bias, is most often assumed to be local. This is however unstable under time evolution, we provide proofs under several sets of assumptions.Expand
Clustering of dark matter tracers: Renormalizing the bias parameters
A commonly used perturbative method for computing large-scale clustering of tracers of mass density, like galaxies, is to model the tracer density field as a Taylor series in the local smoothed massExpand
Clustering of dark matter tracers: generalizing bias for the coming era of precision LSS
On very large scales, density fluctuations in the Universe are small, suggesting a perturbative model for large-scale clustering of galaxies (or other dark matter tracers), in which the galaxyExpand
Large-scale bias in the Universe: bispectrum method
Evidence that the Universe may be close to the critical density, required for its expansion eventually to be halted, comes principally from dynamical studies of large-scale structure. These studiesExpand
Modeling Scale-Dependent Bias on the Baryonic Acoustic Scale with the Statistics of Peaks of Gaussian Random Fields
Models of galaxy and halo clustering commonly assume that the tracers can be treated as a continuous field locally biased with respect to the underlying mass distribution. In the peak model pioneeredExpand
Calibrating the baryon oscillation ruler for matter and halos
We characterize the nonlinear evolution of the baryon acoustic feature as traced by the dark matter and halos, using a combination of perturbation theory and N-body simulations. We confirm that theExpand
Clipping the cosmos: the bias and bispectrum of large scale structure.
TLDR
The results strongly suggest that this method increases the range of scales where the relation between the bispectrum and power spectrum in tree-level perturbation theory may be applied, from k(max) ∼ 0.1 to ∼0.7 hMpc(-1), which leads to correspondingly large improvements in the determination of galaxy bias. Expand
Minimizing the stochasticity of halos in large-scale structure surveys
In recent work (Seljak, Hamaus, and Desjacques 2009) it was found that weighting central halo galaxies by halo mass can significantly suppress their stochasticity relative to the dark matter, wellExpand
Two ways of biasing galaxy formation
We calculate the galaxy bispectrum in both real and redshift space, adopting the most common prescriptions for local Eulerian biasing and the Lagrangian evolving-bias model. We show that the twoExpand
Large scale bias and the peak background split
Dark matter haloes are biased tracers of the underlying dark matter distribution. We use a simple model to provide a relation between the abundance of dark matter haloes and their spatialExpand
...
1
2
3
4
5
...