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2020

Local primordial non-Gaussianity in the relativistic galaxy bispectrum

Maartens, Roy, Jolicoeur, Sheean, Umeh, Obinna et al.

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Next-generation galaxy and 21cm intensity mapping surveys will rely on a combination of the power spectrum and bispectrum for high-precision measurements of primordial non-Gaussianity.

In turn, these measurements will allow us to distinguish between various models of inflation.
However, precision observations require theoretical precision at least at the same level.
We extend the theoretical understanding of the galaxy bispectrum by incorporating a consistent general relativistic model of galaxy bias at second order, in the presence of local primordial non-Gaussianity.

Local primordial non-Gaussianity in the relativistic galaxy bispectrum · Around

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