Awad H Elawad | University of Bahri- Sudan (original) (raw)
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The problem of radial free fall one of the most interesting problems in black holes physics. Usin... more The problem of radial free fall one of the most interesting problems in black holes physics. Using the Generalized Metricusing the velocity and acceleration equations of radial free falling massive particle has been formulated. Applying weak field approximation of generalized equations of velocity and acceleration,the same GR equations for acceleration and velocity obtained
General Relativity is one of the most important branches of Physics that changes radically the co... more General Relativity is one of the most important branches of Physics that changes radically the concepts of space, time and matter. It can describe successfully the behavior of the gravitational field and it gives wonderful solutions of many gravitational problems, which agrees with astronomical observations to a high degree of precision. But unfortunately, it suffers from noticeable setbacks. For example, the cosmological model based on it suffers from certain cosmological problems. These problems include the behavior of quasars and pulsars, where the field is too strong and that is difficult to be understood in terms of General Relativity. Many attempts were made to go beyond General Relativity. Among these the Generalized Field Equation (GFE), which is based on a more general form of fourth order differential equations, looks more promising. This is due to the successes of it in making these problems controllable, in this work exact solution of Generalized Field Equation metric has been done where the field is strong near the black hole horizon and agree with General Relativity solution at weak field a distance from horizon, and apply this generalized metric in radial null geodesic and Eddington-Finkelstein Coordinates
The problem of radial free fall one of the most interesting problems in black holes physics. Usin... more The problem of radial free fall one of the most interesting problems in black holes physics. Using the Generalized Metricusing the velocity and acceleration equations of radial free falling massive particle has been formulated. Applying weak field approximation of generalized equations of velocity and acceleration,the same GR equations for acceleration and velocity obtained
General Relativity is one of the most important branches of Physics that changes radically the co... more General Relativity is one of the most important branches of Physics that changes radically the concepts of space, time and matter. It can describe successfully the behavior of the gravitational field and it gives wonderful solutions of many gravitational problems, which agrees with astronomical observations to a high degree of precision. But unfortunately, it suffers from noticeable setbacks. For example, the cosmological model based on it suffers from certain cosmological problems. These problems include the behavior of quasars and pulsars, where the field is too strong and that is difficult to be understood in terms of General Relativity. Many attempts were made to go beyond General Relativity. Among these the Generalized Field Equation (GFE), which is based on a more general form of fourth order differential equations, looks more promising. This is due to the successes of it in making these problems controllable, in this work exact solution of Generalized Field Equation metric has been done where the field is strong near the black hole horizon and agree with General Relativity solution at weak field a distance from horizon, and apply this generalized metric in radial null geodesic and Eddington-Finkelstein Coordinates