Zobrazeno 1 - 10
of 408
pro vyhledávání: '"Martínez, Cristián"'
The nature of the central singularity of the BTZ geometries -- stationary vacuum solutions of 2+1 gravity with negative cosmological constant $\Lambda=-\ell^{-2}$ and $SO(2)\times \mathbb{R}$ isometry -- is discussed. The essential tool for this anal
Externí odkaz:
http://arxiv.org/abs/2404.06552
Autor:
Maeda, Hideki, Martinez, Cristian
Without specifying a matter field nor imposing energy conditions, we study Killing horizons in $n(\ge 3)$-dimensional static solutions in general relativity with an $(n-2)$-dimensional Einstein base manifold. Assuming linear relations $p_{\rm r}\sime
Externí odkaz:
http://arxiv.org/abs/2402.11012
Autor:
Yaryura, C. Yamila, Abadi, Mario G., Gottlöber, Stefan, Libeskind, Noam I., Cora, Sofía A., Ruiz, Andrés N., Vega-Martínez, Cristian A., Yepes, Gustavo
We study the properties of associations of dwarf galaxies and their dependence on the environment. Associations of dwarf galaxies are extended systems composed exclusively of dwarf galaxies, considering as dwarf galaxies those galaxies less massive t
Externí odkaz:
http://arxiv.org/abs/2307.14420
Autor:
Ruiz, Andrés N., Martínez, Héctor J., Coenda, Valeria, Muriel, Hernán, Cora, Sofía A., Rios, Martín de los, Vega-Martínez, Cristian A.
We study the population of backsplash galaxies at $z=0$ in the outskirts of massive, isolated clusters of galaxies taken from the MDPL2-SAG semi-analytic catalogue. We consider four types of backsplash galaxies according to whether they are forming s
Externí odkaz:
http://arxiv.org/abs/2307.13037
Autor:
Aldás, Franklin, Zenteno, Alfredo, Gómez, Facundo, Hernandez-Lang, Daniel, Carrasco, Eleazar R., Vega-Martínez, Cristian A., Castellón, J. L. Nilo
Merging of galaxy clusters are some of the most energetic events in the Universe, and they provide a unique environment to study galaxy evolution. We use a sample of 84 merging and relaxed SPT galaxy clusters candidates, observed with the Dark Energy
Externí odkaz:
http://arxiv.org/abs/2307.11837
Instantons, emerged in particle physics, have been intensely studied since the 1970's and had an enormous impact in mathematics since then. In this paper, we focus on one particular way in which mathematical physics has guided the development of alge
Externí odkaz:
http://arxiv.org/abs/2302.00783
Einstein gravity minimally coupled to a scalar field with a two-parameter Higgs-like self-interaction in three spacetime dimensions is recast in terms of a Chern-Simons form for the algebra $g^{+}\oplus g^{-}$ where, depending on the sign of the self
Externí odkaz:
http://arxiv.org/abs/2212.13094
Autor:
Hough, Tomás, Cora, Sofía A., Haggar, Roan, Vega-Martínez, Cristian, Kuchner, Ulrike, Pearce, Frazer, Gray, Meghan, Knebe, Alexander, Yepes, Gustavo
In this work, we combine the semi-analytic model of galaxy formation and evolution SAG with the $102$ relaxed simulated galaxy clusters from The Three Hundred project, and we study the link between the quenching of star formation (SF) and the physica
Externí odkaz:
http://arxiv.org/abs/2211.04485
Autor:
Salerno, Juan Manuel, Muriel, Hernán, Coenda, Valeria, Cora, Sofía A., Pereyra, Luis, Ruiz, Andrés N., Vega-Martínez, Cristian A.
We analyse the connection between the star formation quenching of galaxies and their location in theoutskirts of clusters in the redshift range $z=[0,2]$ by estimating the fraction of red galaxies. More specifically, we focus on galaxies that infall
Externí odkaz:
http://arxiv.org/abs/2210.09300
Autor:
Lo, Jason, Martinez, Cristian
On a Weierstrass elliptic surface, we describe the action of the relative Fourier-Mukai transform on the geometric chamber of $\mathrm{Stab}(X)$, and in the K3 case we also study the action on one of its boundary components. Using new estimates for t
Externí odkaz:
http://arxiv.org/abs/2210.01261