Zobrazeno 1 - 10
of 505
pro vyhledávání: '"Ferreira, M. C."'
Autor:
GRAVITY Collaboration, Foschi, A., Abuter, R., Aimar, N., Seoane, P. Amaro, Amorim, A., Bauböck, M., Berger, J. P., Bonnet, H., Bourdarot, G., Brandner, W., Cardoso, V., Clénet, Y., Dallilar, Y., Davies, R., de Zeeuw, P. T., Defrère, D., Dexter, J., Drescher, A., Eckart, A., Eisenhauer, F., Ferreira, M. C., Schreiber, N. M. Förster, Garcia, P. J. V., Gao, F., Gendron, E., Genzel, R., Gillessen, S., Gomes, T., Habibi, M., Haubois, X., Heißel, G., Henning, T., Hippler, S., Hönig, S. F., Horrobin, M., Jochum, L., Jocou, L., Kaufer, A., Kervella, P., Kreidberg, L., Lacour, S., Lapeyrère, V., Bouquin, J. B. Le, Léna, P., Lutz, D., Millour, F., Ott, T., Paumard, T., Perraut, K., Perrin, G., Pfuhl, O., Rabien, S., Ribeiro, D. C., Bordoni, M. Sadun, Scheithauer, S., Shangguan, J., Shimizu, T., Stadler, J., Straub, O., Straubmeier, C., Sturm, E., Sykes, C., Tacconi, L. J., Vincent, F., von Fellenberg, S., Widmann, F., Wieprecht, E., Wiezorrek, E., Woillez, J.
The motion of S2, one of the stars closest to the Galactic Centre, has been measured accurately and used to study the compact object at the centre of the Milky Way. It is commonly accepted that this object is a supermassive black hole but the nature
Externí odkaz:
http://arxiv.org/abs/2306.17215
Autor:
Ferreira, M. C.
Publikováno v:
Biblioteca Digital de Teses e Dissertações da FEICentro Universitário da Fundação Educacional InacianaFEI.
Dissertação (Mestrado em Engenharia Química) - Centro Universitário da FEI, São Bernardo do Campo, 2016
Publikováno v:
Advances in Transportation Studies. Apr2023, Vol. 59, p179-192. 14p.
Autor:
Ferreira, M. C., Martins, C. J. A. P.
Publikováno v:
Phys. Rev. D91 (2015) 124032
In a recent publication [Ferreira {\it et al.}, Phys. Rev. D89 (2014) 083011] we tested the consistency of current astrophysical tests of the stability of the fine-structure constant $\alpha$ and the proton-to-electron mass ratio $\mu=m_p/m_e$ (mostl
Externí odkaz:
http://arxiv.org/abs/1506.03550
Publikováno v:
Phys. Rev. D89 (2014) 083011
We test the consistency of several independent astrophysical measurements of fundamental dimensionless constants. In particular, we compare direct measurements of the fine-structure constant $\alpha$ and the proton-to-electron mass ratio $\mu=m_p/m_e
Externí odkaz:
http://arxiv.org/abs/1405.0299
We discuss how existing astrophysical measurements of various combinations of the fine-structure constant $\alpha$, the proton-to-electron mass ratio $\mu$ and the proton gyromagnetic ratio g$_{p}$ towards the radio source PKS1413+135 can be used to
Externí odkaz:
http://arxiv.org/abs/1309.7765
Autor:
Martins, C. J. A. P., Ferreira, M. C., Julião, M. D., Leite, A. C. O., Monteiro, A. M. R. V. L., Pedrosa, P. O. J., Vielzeuf, P. E.
The recent observational evidence for the acceleration of the universe demonstrates that canonical theories of cosmology and particle physics are incomplete - if not incorrect - and that new physics is out there, waiting to be discovered. The most ex
Externí odkaz:
http://arxiv.org/abs/1309.7758
We make use of the comparison between measurements of various pairs of atomic clocks to impose constraints on coupled variations of fundamental constants in severs unification scenarios. We obtain null results for the proton-to-electron mass ratio ${
Externí odkaz:
http://arxiv.org/abs/1309.7763
We point out that existing astrophysical measurements of combinations of the fine-structure constant $\alpha$, the proton-to-electron mass ratio $\mu$ and the proton gyromagnetic ratio $g_p$ towards the radio source PKS1413+135 can be used to individ
Externí odkaz:
http://arxiv.org/abs/1305.7515
Publikováno v:
Phys. Rev. D86, 125025 (2012)
We discuss the usage of measurements of the stability of nature's fundamental constants coming from comparisons between atomic clocks as a means to constrain coupled variations of these constants in a broad class of unification scenarios. After intro
Externí odkaz:
http://arxiv.org/abs/1212.4164