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- W2804709598 abstract "We study the possibility of using correlations between spatial modulations in the observed luminosity distribution of galaxies and the underlying density field as a cosmological probe. Considering redshift ranges, where magnification effects due to gravitational lensing may be neglected, we argue that the dipole part of such luminosity-density correlations traces the corresponding velocity-density signal which may thus be measured from a given galaxy redshift catalogue. Assuming an SDSS-like survey with mean density $overline{n}$ = 0.01 ($h^{-1}$ Mpc)$^{-3}$ and effective volume $V_{rm eff}$ = 0.2 ($h^{-1}$ Gpc)$^{3}$ at a fiducial redshift z = 0.1, we estimate that the velocity-density correlation function can be constrained with high signal-to-noise ratio $gtrsim$ 10 on scales 10-100 Mpc. Similar conclusions apply to the monopole which is sensitive to the environmental dependence of galaxy luminosities and relevant to models of galaxy formation." @default.
- W2804709598 created "2018-06-01" @default.
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- W2804709598 date "2018-07-23" @default.
- W2804709598 modified "2023-09-27" @default.
- W2804709598 title "Probing cosmic velocity–density correlations with galaxy luminosity modulations" @default.
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- W2804709598 doi "https://doi.org/10.1093/mnrasl/sly133" @default.
- W2804709598 hasPublicationYear "2018" @default.
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