Zobrazeno 1 - 10
of 2 948
pro vyhledávání: '"Melo, C"'
In this paper, the emission of gravitational waves in quadratic gravity theory is examined. The wave equations for massless and massive perturbations are derived, followed by the calculation of the energy and angular momentum radiated. In the quadrup
Externí odkaz:
http://arxiv.org/abs/2411.10098
The Aharonov-Bohm (AB) effect is considered in the context of Generalized Electrodynamics (GE) by Podolsky and Bopp. GE is the only extension to Maxwell electrodynamics that is locally {\normalsize{}U(1)}-gauge invariant, admits linear field equation
Externí odkaz:
http://arxiv.org/abs/2407.05501
Publikováno v:
MNRAS 526 (3), 3987-3993 (2023)
The co-varying physical couplings (CPC) framework states that physical parameters like the speed of light in vacuum $c$, the Newtonian constant $G$, and the cosmological constant $\Lambda$ could indeed vary with the spacetime coordinates $x^{\mu}$. H
Externí odkaz:
http://arxiv.org/abs/2305.11118
We discuss standard and tighter upper bounds on the critical temperature $T_c$ of two-dimensional (2D) superconductors and superfluids versus particle density $n$ or filling factor $\nu$ for continuum and lattice systems from the Bardeen-Cooper-Schri
Externí odkaz:
http://arxiv.org/abs/2303.10939
Autor:
Steiner, M., Attia, O., Ehrenreich, D., Lendl, M., Bourrier, V., Lovis, C., Seidel, J. V., Sousa, S. G., Mounzer, D., Astudillo-Defru, N., Bonfils, X., Bonvin, V., Dethier, W., Heng, K., Lavie, B., Melo, C., Ottoni, G., Pepe, F., Ségransan, D., Wyttenbach, A.
Publikováno v:
A&A 672, A134 (2023)
We searched for potential atmospheric species in KELT-10b, focusing on sodium doublet lines (Na i; 589 nm) and the Balmer alpha line (H $\alpha$; 656 nm) in the transmission spectrum. Furthermore, we measured the planet-orbital alignment with the spi
Externí odkaz:
http://arxiv.org/abs/2303.05857
Autor:
Abarzúa, H.1 (AUTHOR), Melo, C.2 (AUTHOR), Restrepo, S. E.1,3 (AUTHOR), Vergara, S.1,3 (AUTHOR), Sbarbaro, D.2 (AUTHOR), Cañas, G.4 (AUTHOR), Lima, G.5 (AUTHOR), Saavedra, G.2 (AUTHOR), Cariñe, J.1 (AUTHOR) jcarine@ucsc.cl
Publikováno v:
Algorithms. Dec2024, Vol. 17 Issue 12, p534. 11p.
Autor:
Chauvin, G., Videla, M., Beust, H., Mendez, R., Correia, A. C. M., Lacour, S., Tokovinin, A., Hagelberg, J., Bouchy, F., Boisse, I., Villegas, C., Bonavita, M., Desidera, S., Faramaz, V., Forveille, T., Gallenne, A., Haubois, X., Jenkins, J. S., Kervella, P., Lagrange, A. -M., Melo, C., Thebault, P., Udry, S., Segransan, D.
Publikováno v:
A&A 675, A114 (2023)
Planet(s) in binaries are unique architectures for testing predictions of planetary formation and evolution theories in very hostile environments. We used the IRDIS dual-band imager of SPHERE at VLT, and the speckle interferometric camera HRCAM of SO
Externí odkaz:
http://arxiv.org/abs/2211.00994
Publikováno v:
Ann. Phys. 457, 169411 (2023)
Following a recent approach in which the gravitational field equations in curved spacetimes were presented in the Bopp--Podolsky electrodynamics, we obtained an approximate and spherically symmetric wormhole solution in this context. The calculations
Externí odkaz:
http://arxiv.org/abs/2210.09938
Autor:
Gorrini, P., Astudillo-Defru, N., Dreizler, S., Damasso, M., Díaz, R. F., Bonfils, X., Jeffers, S. V., Barnes, J. R., Del Sordo, F., Almenara, J. -M., Artigau, E., Bouchy, F., Charbonneau, D., Delfosse, X., Doyon, R., Figueira, P., Forveille, T., Haswell, C. A., López-González, M. J., Melo, C., Mennickent, R. E., Gaisné, G., Morales, N., Murgas, F., Pepe, F., Rodríguez, E., Santos, N. C., Tal-Or, L., Tsapras, Y., Udry, S.
Publikováno v:
A&A 664, A64 (2022)
Context. Gliese 832 (GJ 832) is an M2V star hosting a massive planet on a decade-long orbit, GJ 832b, discovered by radial velocity (RV). Later, a super Earth or mini-Neptune orbiting within the stellar habitable zone was reported (GJ 832c). The rece
Externí odkaz:
http://arxiv.org/abs/2206.07552
We discuss standard and tighter upper bounds on the critical temperature $T_c$ of two-dimensional superconductors and superfluids versus particle density n or filling factor $\nu$, under the assumption that the transition from the normal to the super
Externí odkaz:
http://arxiv.org/abs/2203.05478