3 papers
astro-ph.CO2025
Probing cosmic isotropy: Hubble constant and matter density large-angle variations with the Pantheon+SH0ES data
Rahima Mokeddem, Maria Lopes, Felipe Avila +2
In this study we investigate potential large-angle anisotropies in the angular distribution of the cosmological parameters (the Hubble constant) and (the matter densit…
astro-ph.CO2025
Cosmological Remapping for Efficient Generation of 21 cm Intensity Mapping Mocks
Rahima Mokeddem, Bruno B. Bizarria, Jiajun Zhang +10
We present a novel application of cosmological rescaling, or "remapping," to generate 21 cm intensity mapping mocks for different cosmologies. The remapping method allows for compu…
gr-qc2025
Cosmic slowing down of acceleration with the Chaplygin-Jacobi gas as a dark fluid?
J. A. S. Fortunato, W. S. Hipolito-Ricaldi, N. Videla +1
A particular generalization of the Chaplygin inflationary model, using the formalism of Hamilton-Jacobi and elliptic functions, results in a more general non-linear Chaplygin-type…