148 citations · 313 across the 10 of their papers we have counts for
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Interiors of terrestrial planets in metric-affine gravity
Aleksander Kozak, Aneta Wojnar
Using a semi-empirical approach we show that modified gravity affects the internal properties of terrestrial planets, such as their physical characteristics of a core, mantle, and…
Non-homogeneous exoplanets in metric-affine gravity
Aleksander Kozak, Aneta Wojnar
The improved description of the planets' interior is provided. We examine the modified gravity effects on the Earth-like planets composed of the iron core and silicate mantle. We c…
Scalar-tensor cosmologies in a minisuperspace formulation: a case study
Andrzej Borowiec, Aleksander Kozak
We revisit a general minisuperspace (MSS) formalism for scalar-tensor (ST) FLRW type cosmological models in arbitrary frame with perfect fluid source. We discuss how to impose Cauc…
Metric-affine gravity effects on terrestrial (exo-)planets profiles
Aleksander Kozak, Aneta Wojnar
Mass-radius relations of homogeneous cold spheres are obtained for six solid materials commonly found in terrestrial planets. An additional degeneracy in the (exo-)planets' profile…
Invariant quantities of Scalar-Tensor Theories for stellar structure
Aleksander Kozak, Aneta Wojnar
We present the relativistic hydrostatic equilibrium equations for a wide class of gravitational theories possessing a scalar-tensor representation. It turns out that the stellar st…