The Odd-Parity Galaxy Bispectrum
arXiv:1906.05198 · doi:10.1103/PhysRevD.102.023530
Abstract
The galaxy bispectrum contains a wealth of information about the early universe, gravity, as well as astrophysics such as galaxy bias. In this paper, we study the parity-odd part of the galaxy bispectrum which is hitherto unexplored. In the standard cosmological model, the odd-parity bispectrum is generated by galaxy velocities through redshift-space distortions. While small in the case of General Relativity coupled with smooth dark energy, the signal could be larger in modified gravity scenarios. Thus, apart from being a very useful consistency test of measurements of galaxy clustering, the odd bispectrum offers a novel avenue for searching for new physics.
5 pages, 2 figures. Comments welcome
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Cited by in corpus (12)
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- Detecting the relativistic galaxy bispectrum
- Detecting the relativistic bispectrum in 21cm intensity maps
- Wide-angle and relativistic effects in Fourier-space clustering statistics
- Wide-angle effects in the galaxy bispectrum
- Apparent parity violation in the observed galaxy trispectrum
- Reconstructing the Long-wavelength Matter Density Fluctuation Modes from the Scalar-Type Clustering Fossils
- Multipoles of the galaxy bispectrum on a light cone: wide-separation and relativistic corrections
- The Odd-Parity Part of the Observed Galaxy Trispectrum
- Skew-spectra: a generalization to spin-
- Visualising relativistic effects in redshift space distortions of large scale structure