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Autor Cruz Dombriz, Álvaro de la |
Documentos disponibles escritos por este autor (40)
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Aparicio Resco, Miguel ; Cruz Dombriz, Álvaro de la ; Llanes Estrada, Felipe José ; Zapatero Castrillo, Víctor | Elsevier B.V. | 2016-09In the context of ƒ (R) gravity theories, we show that the apparent mass of a neutron star as seen from an observer at infinity is numerically calculable but requires careful matching, first at the star’s edge, between interior and exterior solu[...]![]()
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Albareti, F. D. ; Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio | IOP publishing ltd | 2013-07Raychaudhuri equation is found provided that particular energy conditions are assumed and regardless the considered solution of the Einstein's equations. This fact is usually interpreted as a manifestation of the attractive character of gravity.[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; Lineros, R. ; López Maroto, Antonio | Amer Inst Physics | 2011If the present dark matter (DM) in the Universe annihilates into Standard Model (SM) particles, it must contribute to the gamma ray fluxes that are detected on the Earth. The magnitude of such contribution depends on the particular DM candidate,[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio ; Lineros, R.A. ; López Maroto, Antonio | Amer Physical Soc | 2011-04-11If the present dark matter in the Universe annihilates into standard model particles, it must contribute to the fluxes of cosmic rays that are detected on the Earth and, in particular, to the observed gamma-ray fluxes. The magnitude of such a co[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Jarillo Díaz, Javier | IOP Publishing | 2015-02We study electric and magnetic monopoles in static, spherically symmetric and constant curvature geometries in the context of the inverse electrodynamics model. We prove that this U(1) invariant Lagrangian density is able to support the standard[...]![]()
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López Maroto, Antonio ; Cruz Dombriz, Álvaro de la ; Ruiz Cembranos, José Alberto ; Gammaldi, Viviana ; Lineros, Roberto A. | Springer | 2013-09-13We study the differences in the gamma-ray spectra simulated by four Monte Carlo event generator packages developed in particle physics. Two different versions of PYTHIA and two of HERWIG are analyzed, namely PYTHIA 6.418 and HERWIG 6.5.10 in For[...]![]()
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Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Gammaldi, Viviana ; Mendez Isla, Miguel | Elsevier B.V. | 2020-01In the era of radio astronomy, the high sensitivity of the Square Kilometre Array (SKA) could play a decisive role in the detection of new radio sources. In this work, we study the SKA sensitivity to the synchrotron radio emission expected by th[...]![]()
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Cruz Dombriz, Álvaro de la | Universidad Complutense de Madrid, Servicio de Publicaciones | 2010-04-22En esta tesis se han estudiado algunas consecuencias cosmológicas y astrofísicas en dos teorías de gravedad modificada : las teorías f(R) y las teorías en el mundo brana en dimensiones extra. En primer lugar, hemos mostrado algunos resultados pa[...]![]()
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Albareti, F. D. ; Ruiz Cembranos, José Alberto ; Cruz Dombriz, Álvaro de la ; Dobado González, Antonio | IOP Publishing | 2014In this work we address the issue of studying the conditions required to guarantee the Focusing Theorem for both null and time like geodesic congruences by using the Raychaudhuri equation. In particular we study the case of Friedmann-Robertson-W[...]![]()
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Cruz Dombriz, Álvaro de la ; Montero, Miguel ; Shahbazi Alonso, Carlos | American Physical Society | 2014-03-05A new general class of solutions of ungauged four-dimensional supergravity, in one-to-one correspondence with spherically symmetric, static black-hole solutions and Lifshitz solutions with hyperscaling violation is studied. The causal structure [...]