Zobrazeno 1 - 10
of 5 931
pro vyhledávání: '"Gomes, J."'
Autor:
Cunha, P. A. C., Humphrey, A., Brinchmann, J., Morais, S. G., Carvajal, R., Gomes, J. M., Matute, I., Paulino-Afonso, A.
We aim to identify QSO2 candidates in the redshift desert using optical and infrared photometry. At this intermediate redshift range, most of the prominent optical emission lines in QSO2 sources (e.g. CIV1549; [OIII]4959,5008) fall either outside the
Externí odkaz:
http://arxiv.org/abs/2405.13650
Publikováno v:
Open Communications in Nonlinear Mathematical Physics, Proceedings: OCNMP Conference, Bad Ems (Germany), 23-29 June 2024 (April 26, 2024) ocnmp:13294
The construction of Integrable Hierarchies in terms of zero curvature representation provides a systematic construction for a series of integrable non-linear evolution equations (flows) which shares a common affine Lie algebraic structure. The integr
Externí odkaz:
http://arxiv.org/abs/2403.16285
Publikováno v:
Open Communications in Nonlinear Mathematical Physics, Proceedings: OCNMP Conference, Bad Ems (Germany), 23-29 June 2024 (April 15, 2024) ocnmp:13201
We present a construction of a class of rational solutions of the Painlev\'e V equation that exhibit a two-fold degeneracy, meaning that there exist two distinct solutions that share identical parameters. The fundamental object of our study is the or
Externí odkaz:
http://arxiv.org/abs/2310.01585
Under special conditions the Painlev\'e V equation has more than one rational solution solving it with the same parameters. In the setting of formalism that identifies points on orbits of the fundamental shift operators of $A^{(1)}_{3}$ affine Weyl g
Externí odkaz:
http://arxiv.org/abs/2307.07825
Publikováno v:
Open Communications in Nonlinear Mathematical Physics, Volume 3 (September 6, 2023) ocnmp:11714
We show how the zero-curvature equations based on a loop algebra of $D_4$ with a principal gradation reduce via self-similarity limit to a polynomial Hamiltonian system of coupled Painlev\'e III models with four canonical variables and $D_4^{(1)}$ af
Externí odkaz:
http://arxiv.org/abs/2304.10035
Autor:
Humphrey, A., Cunha, P. A. C., Paulino-Afonso, A., Amarantidis, S., Carvajal, R., Gomes, J. M., Matute, I., Papaderos, P.
In the era of huge astronomical surveys, machine learning offers promising solutions for the efficient estimation of galaxy properties. The traditional, `supervised' paradigm for the application of machine learning involves training a model on labell
Externí odkaz:
http://arxiv.org/abs/2212.02537
Autor:
Millan-Irigoyen, I., del Valle-Espinosa, M. G., Fernández-Aranda, R., Galbany, L., Gomes, J. M., Moreno-Raya, M., López-Sánchez, Á. R., Mollá, M.
We present a summary of our project that studies galaxies hosting type Ia supernova (SN Ia) at different redshifts. We present Gran Telescopio de Canarias (GTC) optical spectroscopy of six SN Ia host galaxies at redshift $z\sim 0.4-0.5$. They are joi
Externí odkaz:
http://arxiv.org/abs/2209.10242
We develop a systematic approach to deriving rational solutions and obtaining classification of their parameters for dressing chains of even N periodicity or equivalently $A^{(1)}_{N-1}$ invariant Painlev\'e equations. This construction identifies ra
Externí odkaz:
http://arxiv.org/abs/2206.06482