A5103203195- Cosmology and Gravitation Theories
- Solar and Space Plasma Dynamics
- Geophysics and Gravity Measurements
- Relativity and Gravitational Theory
- Healthcare Regulation
- Black Holes and Theoretical Physics
- Mercury impact and mitigation studies
- Heavy metals in environment
- Galaxies: Formation, Evolution, Phenomena
- Quantum and Classical Electrodynamics
- Public Health in Brazil
- Maternal and Neonatal Healthcare
- Pulsars and Gravitational Waves Research
- Heavy Metal Exposure and Toxicity
Instituto Tecnológico de Aeronáutica
2015-2021
Universidad Mayor de San Andrés
2017
Abstract The f ( R , T ) gravity is a theory whose gravitational action depends arbitrarily on the Ricci scalar, and trace of stress–energy tensor, ; its field equations also depend matter Lagrangian, $$\mathscr {L}_{m}$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mi>L</mml:mi> <mml:mi>m</mml:mi> </mml:msub> </mml:math> . In modified theories where there no uniqueness Lagrangian definition dynamics fields can be different depending choice performed. this work...
The equilibrium configuration of white dwarfs composed a charged perfect fluid are investigated in the context $f(R,\mathcal{T})$ gravity, for which $R$ and $\mathcal{T}$ stand Ricci scalar trace energy-momentum tensor, respectively. By considering functional form $f(R, \mathcal{T})=R+2\chi \mathcal{T}$, where $\chi$ is matter-geometry coupling constant, Gaussian ansatz electric distribution, some physical properties were derived, namely: mass, radius, charge, field, effective pressure...
In 1918 Joseph Lense and Hans Thirring, discovered the gravitomagnetic effect when studied solutions to Einstein field equations using weak slow motion approximation of rotating systems. They noted that a body falls towards massive object in rotation it feels force perpendicular its movement. The they obtained were similar Maxwell's electromagnetism, now known as for gravitomagnetism. Some authors affirm can cause precession then this paper we calculate Mercury's perihelion advance. To make...
The study about gravitomagnetic (GM) effects starting when Lense and Thirring do it weak field slow motion approximation in Einstein's equations found similar of Maxwell's magnetism, however those was with mass current, so are called equations. Some authors affirm that the GM effect can cause precession[1][2][3], then this paper we calculate precession solar system planets orbit, as well if influences Mercury's perihelion advance, to this, between dipoles measure influence Sun has on...
In 1918, Joseph Lense and Hans Thirring discovered the gravitomagnetic (GM) effect of Einstein field equations in weak slow motion approximation. They showed that this approximation can be written as same form Maxwell’s equation for electromagnetism. these charge electric current are replaced by mass density current. Thus, gravitomagnetism formalism astrophysical system is used with assuming role charge. work, we present deduction gravitoelectromagnetic analogue Lorentz force...
The expansion of both sides Einstein’s field equations in the weak-field approximation, up to terms order [Formula: see text] is derived. This new approach leads an extended form gravitomagnetism (GEM) properly named as Beyond Gravitomagnetism (BGEM). metric BGEM includes a quadratic term gravitoelectric potential n time and also space functions contrast with first post-Newtonian text]PN approximation where appears only function. nonlinear does not appear conventional GEM, but essential...