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We present a systematic study of galaxy bias in the presence of primordial non-Gaussianity in General Relativity (GR) at second order in perturbation theory. The non-linearity of the Poisson equation in GR and primordial non-Gaussianity are consistently included. We show that the inclusion of non-local primordial non-Gaussianity in addition to local non-Gaussianity is important to show the absence of the modulation of small scale clustering by the long-wavelength mode in the single field slow-roll inflation. We study the bispectrum of the relativistic galaxy density in several gauges and identify the effect of primordial non-Gaussianity and GR corrections.
|Number of pages||21|
|Journal||Journal of Cosmology and Astroparticle Physics|
|Publication status||Published - 16 Dec 2019|
- power spectrum
- cosmological parameters from LSS
- redshift surveys
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Data availability statement for 'The galaxy bias at second order in general relativity with Non-Gaussian initial conditions'.
Umeh, O. (Creator) & Koyama, K. (Creator), IOP Publishing, 27 Nov 2019
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