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Showing 2012 · astro-ph.COShow all
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astro-ph.CO2012★ 7 cited
Low red-shift formula for the luminosity distance in a LTB model with cosmological constant
Antonio Enea Romano, Pisin Chen
We calculate the low red-shift Taylor expansion for the luminosity distance for an observer at the center of a spherically symmetric matter inhomogeneity with a non vanishing cosmo…
astro-ph.CO2012★ 8 cited
Conditions for low-redshift positive apparent acceleration in smooth inhomogeneous models
Antonio Enea Romano
It is known that a smooth LTB model cannot have a positive apparent central acceleration. Using a local Taylor expansion method we study the low-redshift conditions to obtain an ap…