Zobrazeno 1 - 10
of 910
pro vyhledávání: '"Lobato R"'
Autor:
Carvalho, G. A., Anjos, R. C. dos, Coelho, J. G., Lobato, R. V., Malheiro, M., Marinho, R. M., Rodriguez, J. F., Rueda, J. A., Ruffini, R.
The traditional description of the orbital evolution of compact-object binaries, like double white dwarfs (DWDs), assumes that the system is driven only by gravitational wave (GW) radiation. However, the high magnetic fields with intensities of up to
Externí odkaz:
http://arxiv.org/abs/2208.00863
In this work, we investigate the equilibrium configurations of massive white dwarfs (MWD) in the context of modified gravity, namely $f(R,L_m)$ gravity, where $R$ stands for the Ricci scalar and $L_m$ is the Lagrangian matter density. We focused on t
Externí odkaz:
http://arxiv.org/abs/2206.09278
Neutron stars (NS) are compact objects with strong gravitational fields, and a matter composition subject to extreme physical conditions. The properties of strongly interacting matter at ultra-high densities and temperatures impose a big challenge to
Externí odkaz:
http://arxiv.org/abs/2204.01183
This work analyses the hydrostatic equilibrium configurations of strange stars in a non-minimal geometry-matter coupling (GMC) theory of gravity. Those stars are made of strange quark matter, whose distribution is governed by the MIT equation of stat
Externí odkaz:
http://arxiv.org/abs/2201.08726
Autor:
Bertulani, C. A., Lobato, R. V.
Neutron tunneling in neutron star crusts can release enormous amounts of energy on a short timescale. We have clarified aspects of this process occurring in the outer crust regions of neutron stars when oscillations or cataclysmic events changes the
Externí odkaz:
http://arxiv.org/abs/2112.14817
Publikováno v:
Eur. Phys. J. C 81, 1013 (2021)
In this work we investigate neutron stars (NS) in $f(\mathtt{R,L_m})$ theory of gravity for the case $f(\mathtt{R,L_m}) = \mathtt{R} + \mathtt{L_m} + \sigma\mathtt{R}\mathtt{L_m}$, where $\mathtt{R}$ is the Ricci scalar and $\mathtt{L_m}$ the Lagrang
Externí odkaz:
http://arxiv.org/abs/2106.01841
Autor:
Bertulani, C. A., Lobato, R.
We study the effects of final state interactions in the non-mesonic weak decay $\Lambda N \rightarrow nN$ (n is a neutron and N is either a neutron or a proton) of the hypernucleus $_\Lambda^4$He. Using a three-body model the effects of distortion of
Externí odkaz:
http://arxiv.org/abs/2010.14083
Autor:
Lobato, R., Lourenço, O., Moraes, P. H. R. S., Lenzi, C. H., de Avellar, M., de Paula, W., Dutra, M., Malheiro, M.
In this work we investigate neutron stars (NS) in $f(\mathcal{R,T})$ gravity for the case $R+2\lambda\mathcal{T}$, $\mathcal{R}$ is the Ricci scalar and $\mathcal{T}$ the trace of the energy-momentum tensor. The hydrostatic equilibrium equations are
Externí odkaz:
http://arxiv.org/abs/2009.04696
Publikováno v:
Eur. Phys. J. C (2021) 81:134
The $f(R,T)$ gravity is a theory whose gravitational action depends arbitrarily on the Ricci scalar, $R$, and the trace of the stress-energy tensor, $T$; its field equations also depend on matter Lagrangian, $\mathcal{L}_{m}$. In the modified theorie
Externí odkaz:
http://arxiv.org/abs/2008.13326
Autor:
Moraes, P. H. R. S., Arbañil, J. D. V., Carvalho, G. A., Lobato, R. V., Otoniel, E., Marinho Jr., R. M., Malheiro, M.
In this article we study the hydrostatic equilibrium configuration of neutron stars (NSs) and strange stars (SSs), whose fluid pressure is computed from the equations of state $p=\omega\rho^{5/3}$ and $p=0.28(\rho-4{\cal B})$, respectively, with $\om
Externí odkaz:
http://arxiv.org/abs/1806.04123