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Dr Ahmed Farag Ali (Benha University)9/7/20, 12:30 PMTalk
We consider spacetime foliation, at every given moment according to canonical observers, each with its speed at that moment. Consider a black hole spacetime as a spacetime with horizon. The Universe in that sense look like a sequence of frozen moments like a cartoon movie. The Rindler observer would analyze the ADM formalism as if the shift function Ni equal zero. Therefore, the normal vector...
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Aurora Perez Martinez (Instituto de Cibernética, Matemática y Física – ICIMAF)9/7/20, 12:37 PMTalk
We study the spheroidal magnetized Quark and Bose–Einstein Condensate (BEC) Stars. The former are supposed composed by strange quark matter while the later by the pairing of two-neutrons forming an interacting spin-one bosons. We calculate the equation of states (EoS) of the magnetized strange stars matter using Bag model while the corresponding EoS for magnetized BEC stars are doing...
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Dr Cheng-Jun Xia (Zhejiang University Ningbo Institute of Technology)9/7/20, 12:44 PMTalk
We investigate the stability and $e^+e^-$ pair creation of supercritically charged superheavy nuclei, $ud$QM nuggets, strangelets, and strangeon nuggets based on the Thomas-Fermi approximation. The model parameters are fixed by reproducing masses and charge properties of these supercritically charged objects reported in earlier publications. It is found that $ud$QM nuggets, strangelets, and...
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Daniela Perez (Instituto Argentino de Radioastronomía)9/7/20, 12:51 PMTalk
In this talk, I analyze the dynamical evolution of a black hole that is immersed in a universe that goes through a classical bounce. The black hole is represented by the McVittie metric, an exact solution of Einstein Field Equations for an inhomogeneity embedded in a Friedmann-Lemaître-Robertson-Walker cosmological background. I present a full analysis of the causal structure of the spacetime....
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Daryel Manreza Paret (Universidad de La Habana – UH)9/7/20, 12:58 PMTalk
We study the anisotropic neutrino emission from the core of neutron stars induced by the star's magnetic field. We model the core as made out of a magnetized ideal gas of strange quark matter and implement the conditions for stellar equilibrium in this environment. The calculation is performed without resorting to analytical simplifications and for temperature, density and magnetic field...
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Dr Gustavo Niz (Universidad de Guanajuato)9/7/20, 1:05 PMTalk
We model the 3PCF of General Relativity (GR) and a representative model of Modified Gravity (f(R)) using Cosmological Perturbation Theory and compare it with the non-linear evolution of N-body simulations.
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Ms Rudrani Kar Chowdhury (Presidency University)9/7/20, 1:12 PMTalk
Several studies suggest that active galactic nuclei (AGN) play a significant role in the cosmological evolution of their host galaxies and dark matter halos. There is considerable evidence that the formation and evolution of the central AGN and the diffuse gas in the halo are coupled together by the activity of the supermassive blackhole (SMBH), usually termed as AGN feedback in the...
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Tuhina Manna (St. Xavier's College)9/7/20, 1:19 PMTalk
In this paper we have investigated the gravitational lensing phenomenon in the strong field regime for a regular, charged, static, non-linear black hole having a electrodynamics source. We have obtained the angle of deflection and compared it to a Schwarzschild black hole and Reissner Nordstrom black hole with similar properties. We have also done a graphical study of the relativistic image...
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Márcio Mateus Jr (Universidade Federal do Rio Grande do Sul)Poster
Several studies have been dedicated to study the nature of dark matter (DM) and to try to discover its origin. Different approaches have been employed to understand how DM interacts and what are possible mechanisms to detect it. Theories beyond the Standard Model of Elementary Particles (SM) could achieve this by employing effective, simplified, or more complete models. Direct, indirect, and...
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María Florencia Izzo Villafañe (Comision nacional energia atomica)Poster
The behavior of $\pi^0$ meson properties in the presence of a uniform external magnetic field is studied in the context of a nonlocal extension of the Polyakov-Nambu-Jona-Lasinio model which predicts the existence of inverse magnetic catalysis at finite temperature. The analysis includes the $\pi^0$ mass, the effective $\pi^0$-quark coupling and the pion-to-vacuum hadronic form factors, both...
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Nitika Sangwan (NIT Kurukshetra)Poster
The spectrum of high energy ions (HZE) is very broad in space and contributes the most to the accumulation of the radiation dose to the shielding infrastructure of the space mission. The partial fragmentation cross-sections (PFXS) and linear energy deposition are two very significant factors to estimate the dose deposition and risk possibilities due to space radiation exposure when preparing a...
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