Zobrazeno 1 - 10
of 72
pro vyhledávání: '"Odintsov, Sergey"'
We investigate realistic models of compact objects, focusing on neutron and strange stars, composed by dense matter and dark energy in the form of a simple fluid or scalar field interacting with matter. For the dark energy component, we use equations
Externí odkaz:
http://arxiv.org/abs/2307.14862
We investigate the Chandrasekhar mass limit for white dwarfs in various models of $f(R)$ gravity. Two equations of state for stellar matter are used: simple relativistic polytropic equation with polytropic index $n=3$ and the realistic Chandrasekhar
Externí odkaz:
http://arxiv.org/abs/2211.14892
We examine the Chandrasekhar limit for white dwarfs in $f(R)$ gravity, with a simple polytropic equation of state describing stellar matter. We use the most popular $f(R)$ gravity model, namely the $f(R)=R+\alpha R^2$ gravity, and calculate the param
Externí odkaz:
http://arxiv.org/abs/2209.13693
We investigate equilibrium configurations of uniformly rotating neutron stars in $R^2$ gravity with axion scalar field for GM1 equation of state (EoS) for nuclear matter. The mass-radius diagram, mass-central energy density are presented for some fre
Externí odkaz:
http://arxiv.org/abs/2008.11271
We investigated realistic neutron stars in axion $R^{2}$ gravity. The coupling between curvature and axion field $\phi$ is assumed in the simple form $\sim R^2\phi$. For the axion mass in the range $m_{a}\sim 10^{-11}-10^{-10}$ eV the solitonic core
Externí odkaz:
http://arxiv.org/abs/2001.08504
We compare the gravitational collapse of homogeneous perfect fluid with various equations of state in the framework of General Relativity and in $R^2$ gravity. We make our calculations using dimensionless time with characteristic timescale $t_{g}\sim
Externí odkaz:
http://arxiv.org/abs/1812.10441
Autor:
Astashenok, Artyom V.1 (AUTHOR) aastashenok@kantiana.ru, Odintsov, Sergey D.2,3 (AUTHOR) odintsov@ice.cat, Oikonomou, Vasilis K.4 (AUTHOR) voikonomou@gapps.auth.gr
Publikováno v:
Symmetry (20738994). Jun2023, Vol. 15 Issue 6, p1141. 17p.
Akademický článek
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Akademický článek
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Autor:
Matvienko, Gennadii G., Romanovskii, Oleg A., Starchenko, Alexander V., Danilkin, Evgeniy A., Shelmina, Elena A., Kizhner, Lubov I., Prokhanov, Sergey A., Odintsov, Sergey L., Fazliev, Alexander Z., Privezentsev, Alexey I., Svarovsky, Artem I.
Publikováno v:
Proceedings of SPIE; December 2022, Vol. 12341 Issue: 1 p123414O-123414O-13, 12218000p