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astro-ph.CO2025
Numerical implementation of flat FLRW models of cosmic expansion with Planck 2018 cosmological parameters
Julio Carlos Bertua Marasca, Homer Davila Gutierrez, Oswaldo Alberto Martinez Osorio +2
We present an explicit numerical implementation of the Friedmann equations to model the expansion of the Universe in spatially flat, homogeneous and isotropic Friedmann-Lemaitre-Ro…
astro-ph.CO2025
From M100 to NGC 7331: A Multiband Study and Physical Parameters in Nearby Galaxies
Julio C. Bertua Marasca, Homer Dávila Gutiérrez, Víctor Huamán Ticona +2
We study five nearby galaxies (M100/NGC 4321, NGC 1300, M 74, M 60, and NGC 7331) by combining multiband imaging (optical, UV, NIR, and X-rays) with simple photometric measurements…