A Simple, Exact Formulation of Number Counts in the Geodesic-Light-Cone Gauge
arXiv:2307.04565 · doi:10.3390/universe9070327
Abstract
In this article, we compare different formulations of the number count prescription using the convenient formalism of the Geodesic-Light-Cone gauge. We then find a simple, exact, and very general expression of such a prescription which is suitable for generalised applications.
arXiv comment7 pages, no figures. Published in the Special Issue on "Universe: Feature Papers 2023 -- Cosmology", edited by K. Bamba (Universe, MDPI, 2023). Available at: https://www.mdpi.com/2218-1997/9/7/327
References in corpus (22)
- The linear power spectrum of observed source number counts
- What galaxy surveys really measure
- New Perspective on Galaxy Clustering as a Cosmological Probe: General Relativistic Effects
- Large-scale clustering of galaxies in general relativity
- General Relativistic Description of the Observed Galaxy Power Spectrum: Do We Understand What We Measure?
- Symmetries and Consistency Relations in the Large Scale Structure of the Universe
- Light-cone averaging in cosmology: formalism and applications
- Cosmic Rulers
- Galaxy number counts to second order and their bispectrum
- Observed galaxy number counts on the lightcone up to second order: I. Main result
- An exact Jacobi map in the geodesic light-cone gauge
- Backreaction on the luminosity-redshift relation from gauge invariant light-cone averaging
- How does the cosmic large-scale structure bias the Hubble diagram?
- A Consistency Relation for the Observed Galaxy Bispectrum and the Local non-Gaussianity from Relativistic Corrections
- Geodesic-light-cone coordinates and the Bianchi I spacetime
- Galaxy Power Spectrum in General Relativity
- Galaxy Two-Point Correlation Function in General Relativity
- Generalized covariant prescriptions for averaging cosmological observables
- The observed number counts in luminosity distance space
- Observation angles, Fermi coordinates, and the Geodesic-Light-Cone gauge
- Observed Angles and Geodesic Light-Cone Coordinates
- Covariant Decomposition of The Non-Linear Galaxy Number Counts and Their Monopole