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  1. The local galaxy bias formalism relies on the energy constraint equation at the formation time to relate the metric perturbation to the matter density contrast. In the Newtonian approximation, this relationship is linear, which allows us to specify the initial galaxy density as a function of local physical operators. In general relativity however, the relationship is intrinsically nonlinear ...
    Author:Obinna Umeh, Kazuya Koyama, Roy Maartens, Fabian Schmidt, Chris Clarkson, Chris Clarkson, Chris Clar...Published:2019
  2. iopscience.iop.org

    General relativistic effects in the galaxy bias at second order. Obinna Umeh 1,2, Kazuya Koyama 1, Roy Maartens 1,2, Fabian Schmidt 3 and Chris Clarkson 2,4,5. ... We derive the general-relativistic correction to the galaxy bias expansion at second order. The correction does not come from the modulation of small-scale clustering by the long ...
    Author:Obinna Umeh, Kazuya Koyama, Roy Maartens, Fabian Schmidt, Chris Clarkson, Chris Clarkson, Chris Clar...Published:2019
  3. inspirehep.net

    We derive the general-relativistic correction to the galaxy bias expansion at second order. The correction does not come from the modulation of small-scale clustering by the long-wavelength mode; instead, it arises from distortions of the volume element by the long-wavelength mode and it does not lead to new bias parameters.
  4. pure.port.ac.uk

    Gaussianity). We derive the general-relativistic correction to the galaxy bias expansion at second order. The correction does not come from the modulation of small-scale clustering by the long-wavelength mode; instead, it arises from distortions of the volume element by the long-wavelength mode and it does not lead to new bias parameters.
  5. researchgate.net

    Relativistic corrections to redshift-space distortions generate new contributions to this primordial non-Gaussian signal, arising from: (1) a coupling of first-order scale-dependent bias with ...
  6. iopscience.iop.org

    gauge is the simplest gauge in which to describe Lagrangian bias at second order. Keywords: general relativity, cosmological pertrubation, large scale structure 1. Introduction Future galaxy surveys will probe scales comparable to the Hubble horizon, and it is therefore important to correctly incorporate relativistic effects in galaxy number ...
  7. We provide such relation at second-order in perturbation theory adopting the local Eulerian bias model and starting from the observationally motivated uniform-redshift gauge. Our computation includes the presence of primordial non-Gaussianity. We show that large scale-dependent relativistic effects in the Eulerian bias arise independently from the
  8. Author: Umeh, Obinna et al.; Genre: Journal Article; Published online: 2019-05-13; Title: General relativistic effects in the galaxy bias at second order. ... General relativistic effects in the galaxy bias at second order. Journal of Cosmology and Astroparticle Physics, 2019 (5): ...
  9. ui.adsabs.harvard.edu

    The local galaxy bias formalism relies on the energy constraint equation at the formation time to relate the metric perturbation to the matter density contrast. In the Newtonian approximation, this relationship is linear, which allows us to specify the initial galaxy density as a function of local physical operators. In general relativity however, the relationship is intrinsically nonlinear ...

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