Zobrazeno 1 - 10
of 226
pro vyhledávání: '"Araújo, J. C."'
Autor:
de Araujo, J. C. N, Fortes, H. G. M.
General Relativity (GR) is not the only way gravity can be geometrised. Instead of curvature, the Teleparallel Theory attributes gravity to torsion $T$, which is related to the antysimmetric part of connection, and the Symmetric Teleparallel theory n
Externí odkaz:
http://arxiv.org/abs/2407.08884
There has been a growing interest within the astrophysics community in highly magnetized and fast-spinning white dwarfs (WDs), commonly referred to as HMWDs. WDs with these characteristics are quite uncommon and possess magnetic fields $\geqslant 10^
Externí odkaz:
http://arxiv.org/abs/2405.02507
Double white-dwarf (DWD) mergers are relevant astrophysical sources expected to produce massive, highly-magnetized WDs, supernovae (SNe) Ia, and neutron stars (NSs). Although they are expected to be numerous sources in the sky, their detection has ev
Externí odkaz:
http://arxiv.org/abs/2310.06655
Double white dwarf (DWD) mergers are possibly the leading formation channel of massive, rapidly rotating, high-field magnetic white dwarfs (HFMWDs). However, the direct link connecting a DWD merger to any observed HFMWD is still missing. We here show
Externí odkaz:
http://arxiv.org/abs/2208.09506
We report two fundamental inequalities in the Stoner-Wohlfarth model. Specifically, we investigate the theoretical limit for the initial magnetic susceptibility in a system described by the Stoner-Wohlfarth approach. We also find analytical solutions
Externí odkaz:
http://arxiv.org/abs/2203.17014
Autor:
Iglesias, C. A., de Araújo, J. C. R., Xavier, J., da Silva, R. B., Soares, J. M., Silva, L. M., de Araújo, J. H., de Medeiros, S. N., Souza, P. B., Cid, C. C. Plá, Gamino, M., Correa, M. A., Bohn, F.
We report a simple, efficient manner to assess magnetic interactions, more specifically the exchange interaction, in systems as blocked magnetic nanoparticles. Specifically, we investigate what is the theoretical limit for the external magnetic susce
Externí odkaz:
http://arxiv.org/abs/2110.04139
Autor:
de Araujo, J. C. N., Fortes, H. G. M.
Publikováno v:
Brazilian Journal of Physics (2023) 53:75
The Teleparallel Theory is an alternative theory of gravity equivalent to General Relativity (GR) and with non-vanishing torsion $T$. Some extensions of this theory, the so-called $f(T)$ models, have been subject of many recent works. The purpose of
Externí odkaz:
http://arxiv.org/abs/2105.09118
Autor:
Fortes, H. G. M., de Araujo, J. C. N.
Publikováno v:
Classical And Quantum Gravity, v. 39, p. 245017, 2022
The torsion models have stood out among the proposals for an alternative description of gravity. The simplest of them, the Teleparallel theory, is equivalent to General Relativity and there are many studies that seek to study its extension to more ge
Externí odkaz:
http://arxiv.org/abs/2105.04473
Autor:
Iglesias, C. A. M., de Araújo, J. C. R., Xavier, J., da Silva, R. B., Soares, J. M., Brito, E. L., Streck, L., Fonseca, J. L. C., Cid, C. C. Plá, Gamino, M., Silva, E. F., Chesman, C., Correa, M. A., de Medeiros, S. N., Bohn, F.
We investigate the magnetic nanoparticles (fluid) hyperthermia in non-adiabatic conditions through the calorimetric method. Specifically, we propose a theoretical approach to magnetic hyperthermia from a thermodynamic point of view. To test the robus
Externí odkaz:
http://arxiv.org/abs/2103.05691
Autor:
Araujo, J. C. R., Monte, A. F. G., Serrano, R. L., Iwamoto, W., Antunes, A., Brener, O., Foschini, M.
We systematically investigated and quantified how gold (Au) metal nanoparticles (NPs) optical spectra change upon introduction into biological tissue phantoms environment, in which the AuNPs can agglomerate. Quantitative knowledge of how the AuNPs sp
Externí odkaz:
http://arxiv.org/abs/2006.04584