Zobrazeno 1 - 10
of 536
pro vyhledávání: '"de Araujo J"'
Motivated by the idea of using simple macroscopic examples to illustrate the physics of complex systems, we modify a historic experimental setup in which interacting floating magnets spontaneously self-assemble into ordered clusters. By making the cl
Externí odkaz:
http://arxiv.org/abs/2408.15790
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
Autor:
Fontinele, D. O., de Lima, P. D. S., Messias, Y. S., Gomes, R. L., Lopes, C. E. Ferreira, Martins, B. L. Canto, Leão, I. C., de Araújo, J. M., Pacheco, E. Janot, De Medeiros, J. R.
This study presents the results of a search for rotation signature in 250 Gaia DR3 Ultra-Cool Dwarfs (UCDs) with TESS light curves. We identified 71 targets with unambiguous periodicities, of which 61 present rotation signatures and a single source b
Externí odkaz:
http://arxiv.org/abs/2406.07154
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
Autor:
Ferreira, A. E. O., de Araújo, J. L. B., Ferreira, W. P., de Sousa, J. S., Oliveira, C. L. N.
Stressed soft materials commonly present viscoelastic signatures in the form of power-law or exponential decay. Understanding the origins of such rheologic behaviors is crucial to find proper technological applications. Using an elastic network model
Externí odkaz:
http://arxiv.org/abs/2303.07145
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
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
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:
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