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The galaxy bias at second order in general relativity with Non-Gaussian initial conditions

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The galaxy bias at second order in general relativity with Non-Gaussian initial conditions. / Umeh, Obinna; Koyama, Kazuya.

In: Journal of Cosmology and Astroparticle Physics, Vol. 2019, No. 12, 048, 16.12.2019.

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Umeh, Obinna ; Koyama, Kazuya. / The galaxy bias at second order in general relativity with Non-Gaussian initial conditions. In: Journal of Cosmology and Astroparticle Physics. 2019 ; Vol. 2019, No. 12.

Bibtex

@article{a2e7badb96e44128bd8b9ee987cf3e15,
title = "The galaxy bias at second order in general relativity with Non-Gaussian initial conditions",
abstract = "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. ",
keywords = "astro-ph.CO, gr-qc, RCUK, STFC, ST/N000668/1, ST/K0090X/1, power spectrum, cosmological parameters from LSS, redshift surveys",
author = "Obinna Umeh and Kazuya Koyama",
year = "2019",
month = dec,
day = "16",
doi = "10.1088/1475-7516/2019/12/048",
language = "English",
volume = "2019",
journal = "Journal of Cosmology and Astroparticle Physics",
issn = "1475-7516",
publisher = "IOP Publishing",
number = "12",

}

RIS

TY - JOUR

T1 - The galaxy bias at second order in general relativity with Non-Gaussian initial conditions

AU - Umeh, Obinna

AU - Koyama, Kazuya

PY - 2019/12/16

Y1 - 2019/12/16

N2 - 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.

AB - 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.

KW - astro-ph.CO

KW - gr-qc

KW - RCUK

KW - STFC

KW - ST/N000668/1

KW - ST/K0090X/1

KW - power spectrum

KW - cosmological parameters from LSS

KW - redshift surveys

U2 - 10.1088/1475-7516/2019/12/048

DO - 10.1088/1475-7516/2019/12/048

M3 - Article

VL - 2019

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 12

M1 - 048

ER -

ID: 16571122