Zobrazeno 1 - 10
of 815
pro vyhledávání: '"HORVAT, R."'
Autor:
Gomes-Júnior, A. R., Assafin, M., Braga-Ribas, F., Benedetti-Rossi, G., Morgado, B., Camargo, J. I. B., Vieira-Martins, R., Desmars, J., Sicardy, B., Barry, T., Campbell-White, J., Fernández-Lajús, E., Giles, D., Hanna, W., Hayamizu, T., Hirose, T., De Horta, A., Horvat, R., Hosoi, K., Jehin, E., Kerr, S., Machado, D. I., Mammana, L. A., Maybour, D., Owada, M., Rahvar, S., Snodgrass, C.
We report six stellar occultations by (Saturn IX) Phoebe, an irregular satellite of Saturn, obtained between mid-2017 and mid-2019. The 2017 July 06 event is the first stellar occultation by an irregular satellite ever observed. The occultation chord
Externí odkaz:
http://arxiv.org/abs/1910.12188
Autor:
Sicardy, B., Talbot, J., Meza, E., Camargo, J. I. B., Desmars, J., Gault, D., Herald, D., Kerr, S., Pavlov, H., Braga-Ribas, F., Assafin, M., Benedetti-Rossi, G., Dias-Oliveira, A., Ramos-Gomes-Jr., A., Vieira-Martins, R., Berard, D., Kervella, P., Lecacheux, J., Lellouch, E., Beisker, W., Dunham, D., Jelinek, M., Duffard, R., Ortiz, J. L., Castro-Tirado, A. J., Cunniffe, R., Querel, R., Yock, P. A., Cole, A. A., Giles, A. B., Hill, K. M., Beaulieu, J. P., Harnisch, M., Jansen, R., Pennell, A., Todd, S., Allen, W. H., Graham, P. B., Loader, B., McKay, G., Milner, J., Parker, S., Barry, M. A., Bradshaw, J., Broughton, J., Davis, L., Devillepoix, H., Drummond, J., Field, L., Forbes, M., Giles, D., Glassey, R., Groom, R., Hooper, D., Horvat, R., Hudson, G., Idaczyk, R., Jenke, D., Lade, B., Newman, J., Nosworthy, P., Purcell, P., Skilton, P. F., Streamer, M., Unwin, M., Watanabe, H., White, G. L., Watson, D.
We present results from a multi-chord Pluto stellar occultation observed on 29 June 2015 from New Zealand and Australia. This occurred only two weeks before the NASA New Horizons flyby of the Pluto system and serves as a useful comparison between gro
Externí odkaz:
http://arxiv.org/abs/1601.05672
Autor:
Horvat, R.
In a spatially infinite and eternal universe approaching ultimately a de Sitter (or quasi-de Sitter) regime, structure can form by thermal fluctuations as such a space is thermal. The models of Dark Energy invoking holographic principle fit naturally
Externí odkaz:
http://arxiv.org/abs/1502.06348
We study one-loop photon (Pi) and neutrino (Sigma) self-energies in a U(1) covariant gauge-theory on d-dimensional noncommutative spaces determined by a antisymmetric-constant tensor theta^{mu nu}. For the general fermion-photon (S_f) and photon self
Externí odkaz:
http://arxiv.org/abs/1306.1239
Publikováno v:
Physics Letters B 721 (2013), pp. 220-223
In this Letter we report on the results of our search for photons from a U(1) gauge factor in the hidden sector of the full theory. With our experimental setup we observe the single spectrum in a HPGe detector arising as a result of the photoelectric
Externí odkaz:
http://arxiv.org/abs/1210.1043
Autor:
Horvat, R., Trampetic, J.
In an approach to noncommutative gauge theories, where the full noncommutative behavior is delimited by the presence of the UV and IR cutoffs, we consider the possibility of describing a system at a temperature T in a box of size L. Employing a speci
Externí odkaz:
http://arxiv.org/abs/1111.6436
One-loop theta-exact quantum corrections to the neutrino propagator are computed in noncommutative U*(1) gauge-theory based on Seiberg-Witten maps. Our closed form results show that the one-loop correction contains a hard 1/epsilon UV divergence, as
Externí odkaz:
http://arxiv.org/abs/1111.4951
In formulating gauge field theories on noncommutative (NC) spaces it is suggested that particles carrying gauge invariant quantities should not be viewed as pointlike, but rather as extended objects whose sizes grow linearly with their momenta. This
Externí odkaz:
http://arxiv.org/abs/1109.2485
Publikováno v:
Phys.Rev.D84:045004,2011
Photon-neutrino interactions arise quite naturally in noncommutative field theories. Such couplings are absent in ordinary field theory and imply experimental lower bounds on the energy scale Lambda_NC ~ 1/|theta|^2 of noncommutativity. Using non-per
Externí odkaz:
http://arxiv.org/abs/1103.3383
Publikováno v:
Phys.Lett.B699:21-24,2011
In this experiment we aim to look for keV-mass bosons emitted from the Sun, by looking at a process analogous to the photoelectric/Compton effect inside the HPGe detector. Their coupling to both electrons and nucleons is assumed. For masses above 25
Externí odkaz:
http://arxiv.org/abs/1101.5523