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Akademický článek

Anisotropic Cosmological Model with SQM in f(R, Lm) Gravity

Autor: Pravin Bolke, Vasudeo Patil, Sachin Waghmare, Neha Mahajan

Publikováno v: East European Journal of Physics, Iss 3, Pp 45-55 (2024)

A locally rotationally symmetric Bianchi-I model filled with strange quark matter (SQM) is explored in f(R, Lm) gravity as a non-linear functional of the form f(R, Lm)=R/2 +Lαm, where α is the free model parameter. We considered the special law of

Externí odkaz: https://doaj.org/article/293257d399b0442288bdf89e669294ad

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Akademický článek

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Akademický článek

Gravitational orbits in the expanding Universe revisited

Autor: Václav Vavryčuk

Publikováno v: Frontiers in Astronomy and Space Sciences, Vol 10 (2023)

Modified Newtonian equations for gravitational orbits in the expanding Universe indicate that local gravitationally bounded systems like galaxies and planetary systems are unaffected by the expansion of the Universe. This result is derived for the sp

Externí odkaz: https://doaj.org/article/49b22ddd124e4fb2928c4c39fc91ed17

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Akademický článek

Cosmological Redshift and Cosmic Time Dilation in the FLRW Metric

Autor: Václav Vavryčuk

Publikováno v: Frontiers in Physics, Vol 10 (2022)

The paper shows that the commonly used Friedmann-Lemaitre-Robertson-Walker (FLRW) metric describing the expanding Universe must be modified to properly predict the cosmological redshift. It is proved that the change in the frequency of redshifted pho

Externí odkaz: https://doaj.org/article/55e45d4afe4c4b92a67f08839cdf61f9

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Akademický článek

Some Exact Bianchi Types Cosmological Models in f(R, T) Theory of Gravity

Autor: Ahmed Al-haysah, Abdulvahid Hasmani

Publikováno v: Journal of Mathematical Sciences and Modelling, Vol 2, Iss 3, Pp 163-175 (2019)

In this paper, we attempt to study spatially homogeneous Bianchi types-III, V, VI$_0$ $\&$ VI$_h$ cosmological models in $f(R, T)$ theory of gravity. Here the models are obtained by assuming forms of the function $f(R, T)$ as $f(R, T)= R + 2f(T)$ and

Externí odkaz: https://doaj.org/article/112c73101bf543eab497e6fe74d9d2a2

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Akademický článek

Upending the Telescope: D.H. Lawrence as Ecocritic and Birdwatcher

Autor: Shirley Bricout

Publikováno v: Études Lawrenciennes, Vol 53 (2021)

Though he may have been wary of -ism labels, in this paper I would like to assess to what extent Lawrence qualifies as an ecocritic and how his activity as a literary critic affected his own writing. Indeed, his critical output reveals that his prima

Externí odkaz: https://doaj.org/article/98437868e28040c3abdd5a5f64a8b58b

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