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Degeneracy between primordial non-Gaussianity and interaction in the dark sector
Mahmoud Hashim, Daniele Bertacca, Roy Maartens
If dark energy and dark matter interact via exchange of energy and momentum, then this may affect the galaxy power spectrum on large scales. When this happens, it may be degenerate…
Observed galaxy number counts on the lightcone up to second order: III. Magnification Bias
Daniele Bertacca
We study up to second order the galaxy number over-density that depends on magnification in redshift space on cosmological scales for a concordance model. The result contains all g…
Observed galaxy number counts on the lightcone up to second order: II. Derivation
Daniele Bertacca, Roy Maartens, Chris Clarkson
We present a detailed derivation of the observed galaxy number over-density on cosmological scales up to second order in perturbation theory. We include all relativistic effects th…
Observed galaxy number counts on the lightcone up to second order: I. Main result
Daniele Bertacca, Roy Maartens, Chris Clarkson
We present the galaxy number overdensity up to second order in redshift space on cosmological scales for a concordance model. The result contains all general relativistic effects u…