The n-point streaming model: how velocities shape correlation functions in redshift space

  title={The n-point streaming model: how velocities shape correlation functions in redshift space},
  author={Joseph Kuruvilla and Cristiano Porciani},
  journal={arXiv: Cosmology and Nongalactic Astrophysics},
Starting from first principles, we derive the fundamental equations that relate the $n$-point correlation functions in real and redshift space. Our result generalises the so-called `streaming model' to higher-order statistics: the full $n$-point correlation in redshift-space is obtained as an integral of its real-space counterpart times the joint probability density of $n-1$ relative line-of-sight peculiar velocities. Equations for the connected $n$-point correlation functions are obtained by… 
2 Citations
Redshift-space distortions with split densities
Accurate modelling of redshift-space distortions (RSD) is challenging in the non-linear regime for two-point statistics e.g. the two-point correlation function (2PCF). We take a different perspective
Imprint of baryons and massive neutrinos on velocity statistics
We explore the impact of baryonic effects (namely stellar and AGN feedback) on the moments of pairwise velocity using the Illustris-TNG, EAGLE, cosmo-OWLS, and BAHAMAS suites of cosmological


Constraining Mν with the bispectrum
  • Part I. Breaking parameter degeneracies, J. Cosmol. Astropart. Phys. 2020
  • 2020
however (for it was the literal soul of the life of the Redeemer, John xv. io), is the peculiar token of fellowship with the Redeemer. That love to God (what is meant here is not God’s love to men)
Patients emphasised 'having more energy' when reporting improvements in their physical health following treatment and their desire to help other patients to receive treatment was connected to their experience of the services that they received and their perceived health outcomes.
The master programme in Applied Geology aims to provide comprehensive knowledge based on various branches of Geology, with special focus on Applied geology subjects in the areas of Geomorphology, Structural geology, Hydrogeology, Petroleum Geologists, Mining Geology), Remote Sensing and Environmental geology.
Differential geometry in statistical inference
The novel JEV RT-NASBA assay could be used as an efficient molecular biology tool to diagnose JEV, which would facilitate the surveillance of reproductive failure disease in swine and would be beneficial for public health security.
Galaxy redshift-space bispectrum: the importance of being anisotropic
We forecast the benefits induced by adding the bispectrum anisotropic signal to the standard, two- and three-point, clustering statistics analysis. In particular, we forecast cosmological parameter
  • I. Wong et al., WALLABY – An SKA Pathfinder HI Survey, arXiv e-prints
  • 2020