742 citations · 2.4k across the 58 of their papers we have counts for
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Stability criterion for white dwarfs in Palatini gravity
Lupamudra Sarmah, Surajit Kalita, Aneta Wojnar
Recent observations of several peculiar over- and under-luminous type Ia supernovae infer indirect evidence for the violation of the Chandrasekhar mass-limit by suggesting the exis…
Pre-main sequence evolution of low-mass stars in Eddington-inspired Born-Infeld gravity
Merce Guerrero, Diego Rubiera-Garcia, Aneta Wojnar
We study three aspects of the early-evolutionary phases in low-mass stars within Eddington-inspired Born-Infeld (EiBI) gravity, a viable extension of General Relativity. These aspe…
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…
Jupiter and jovian (exo)-planets in Palatini gravity
Aneta Wojnar
Some parts of the substellar evolution, such as fragmentation of a gaseous cloud and Jupiter-like planet's cooling, are demonstrated to be impacted by Palatini gravity.…
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…
Parameterized non-relativistic limit of stellar structure equations in Ricci-based gravity theories
Gonzalo J. Olmo, Diego Rubiera-Garcia, Aneta Wojnar
We present the non-relativistic limit of the stellar structure equations of Ricci-based gravities, a family of metric-affine theories whose Lagrangian is built via contractions of…
Modified Gravity and Cosmology: An Update by the CANTATA Network
Emmanuel N. Saridakis, Ruth Lazkoz, Vincenzo Salzano +50
General Relativity and the CDM framework are currently the standard lore and constitute the concordance paradigm. Nevertheless, long-standing open theoretical issues, as well as…
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…
Cooling process of brown dwarfs in Palatini f(R) gravity
María Benito, Aneta Wojnar
We present an analytical model for the evolution of brown dwarfs in quadratic Palatini f(R) gravity. We improve previous studies by adopting a more realistic description of the par…