Ahmed Tawfik Ali Abdelwahhab |Solution of Einstein Field Equations

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Prof Dr. Ahmed Tawfik Ali Abdelwahhab : Leading Researcher in Solution of Einstein Field Equations

 Professor at King Abdulaziz University, Saudi Arabia

Congratulations, Prof Dr.  Ahmed Ali, on winning the esteemed Best Researcher Award from Sfconference! Your dedication, innovative research, and scholarly contributions have truly made a significant impact in your field. Your commitment to advancing knowledge and pushing the boundaries of research is commendable. Here’s to your continued success in shaping the future of academia and making invaluable contributions to your field. Well done!

Prof Dr. Ahmed Ali a distinguished academic and researcher in the field of Theoretical advances and space missions, holds a PhD in Mathematics ( Pure) (Differential Geometry) Mathematics Department, Faculty of Science, Al- Azhar University, Saudi Arabia. His academic journey has been marked by a profound dedication to advancing Solution of Einstein Field Equations

Professional Profiles:

Education:

● PhD in Mathematics ( Pure) (Differential Geometry) Mathematics Department, Faculty of Science, Al- Azhar University
● Mathematics (Applied) (General Relativity) Mathematics Department, Faculty of Science, Al- Azhar University.

Conference and Workshop Participation:

  1. International Conference on Mathematics: Trends and Development (Cairo, Egypt, 2002)
  2. International Conference on Mathematical Analysis and its Applications (Assiut University, Egypt, 2006)
  3. Conference in Faculty of Science, Al-Azhar University, Egypt (2008)

Supervision of Scientific Theses:

  1. Award-winning Master’s thesis on non-Newtonian fluid models (2007-2010)
  2. Doctoral thesis on position vectors of special surfaces (2010-2014)
  3. Master’s thesis on geometry of curves and symmetrical surfaces (2016)
  4. Doctoral thesis on concircular vector fields in General Relativity (University of Peshawar, Pakistan, 2019)

Arbitration of Scientific Theses:

  1. Reviewed doctoral dissertation on geometry of bi-warped product sub-manifolds (2020)
  2. Reviewed doctoral dissertation on curvature functions of ruled surfaces (2020)
  3. Reviewed doctoral dissertation on pointwise-slant submanifolds and their warped products (2021)
  4. Reviewed master’s thesis on gravitational energy-momentum density in General Relativity and Teleparallel Gravity (2021)

Scientific Publications: A substantial list of published papers covering various topics in mathematics and theoretical physics, including but not limited to new exact solutions, isovector fields, similarity solutions, and position vectors of special curves.

This comprehensive biography reflects my dedication to both academic research and the mentorship of students through thesis supervision and evaluation. My contributions span various conferences, workshops, and numerous published papers, showcasing a commitment to advancing the frontiers of knowledge in my field.

 

Publications: 51 documents indexed in Scopus.

Citations: A total of 580 citations for his publications, demonstrating the impact and recognition of his research within the academic community.

Published Papers:

1- M. F. Al-Sabbagh and Ahmad T. Ali New exact solutions for (3+1)-dimensional Kadometsev-Petviashvili equation and generalized (2+1)-dimensional Boussinesq equation. International Journal of Nonlinear Science and Numerical Simulation, 6(1), 151–162, (2005). Impact Factor: 5.099. 2007

2- S. K. Attallah, M. F. Al-Sabbagh and Ahmad T. Ali Isovector fields and Similarity solutions of Einstein vacuum equations for rotating fields. Communications in Nonlinear Science and Numerical Simulation, 12(7), 1153–1161, (2007). Impact Factor: 2.697. 2008

3- M. F. Al-Sabbagh and Ahmad T. Ali New generalized Jacobi elliptic function expansion method. Communications in Nonlinear Science and Numerical Simulation, 13(9), 1758–1766, (2008). Impact Factor: 2.697.

4- M. F. Al-Sabbagh, Ahmad T. Ali and S. El-Ganaini New abundant exact solutions for the system of (2+1)-dimensional Burgers equations. Applied Mathematics and Information Science-An International Journal, 2(1), 31–41, (2008). Impact Factor: 0.642. 2009

5- Ahmad T. Ali A note on the Exp-function method and its application to nonlinear equations. Physica Scripta, 79(2), (2009), 025006. Impact Factor: 1.204.

6- Ahmad T. Ali New exact solutions of Einstein equations for rotating axially symmetric fields. Physica Scripta, 79(3), (2009), 035006. Impact Factor: 1.204.

7- Ahmad T. Ali Inclined curves in the Euclidean 5-space E^5. Journal of Advanced Research in Pure Mathematics, 1(1), 15–22, (2009).

8- Ahmad T. Ali Space-like Salkowski and anti-Salkowski curves with space like principal normal in Minkowski space E_1^3. International. Journal of Open Problems in Computer Science and Mathematics, 2(3), 451–460, (2009).

9- M. Turgut and Ahmad T. Ali, Bertrand curves of helices in the Euclidean space E^4, International J. Open Problems in Computer Science and Math., 1(1), 1 – 11, (2009).

10- Nassar H. Abdel-All, S. Haggag and Ahmad T. Ali Limits of delta metric using Cartan scalars. Assiut University Journal of Mathematics and computer science, 98, 1–3, (2009). 2010

 

 

Gravitational Lensing

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Introduction of Gravitational Lensing

Gravitational lensing research explores the fascinating phenomenon in astrophysics where the gravitational field of massive objects, such as galaxies or black holes, bends and distorts light from background objects.
Strong Gravitational Lensing:

This subtopic focuses on the most noticeable lensing effects, where multiple and highly distorted images of a single background object, like a quasar or a galaxy, are formed around a massive foreground object. Studying these multiple images provides crucial information about the mass distribution of the foreground lens and the geometry of space-time.

Weak Gravitational Lensing:

Weak lensing occurs when the gravitational distortion is subtle, causing slight but coherent shapes in the images of distant galaxies. Researchers use statistical techniques to detect these weak distortions, providing insights into the distribution of dark matter in the universe and the large-scale structure of the cosmos.

Microlensing:

Microlensing involves the gravitational lensing effects caused by small objects, such as individual stars or black holes, within a galaxy. This phenomenon can be observed when a compact foreground object passes in front of a background star, causing temporary brightening. Microlensing is a powerful tool for detecting dark matter in the form of MACHOs (Massive Astrophysical Compact Halo Objects) and studying the composition of distant stars.

Gravitational Lens Time Delays:

When multiple images of a distant object are formed due to strong lensing, they often exhibit time delays in their light curves. Studying these time delays allows astronomers to calculate the Hubble constant, a crucial parameter describing the rate of the universe’s expansion. Accurate measurements of time delays provide essential constraints on cosmological models.

Einstein Rings and Arcs:

Einstein rings are rare but visually striking occurrences in gravitational lensing, where a background object is perfectly aligned with a massive foreground object, creating a circular ring of distorted light. Similarly, gravitational arcs are elongated features formed when a background object’s light is stretched and bent around a massive foreground object. Studying these phenomena helps astronomers map the mass distribution of galaxy clusters and investigate the properties of both visible and dark matter within them.

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Cosmic structure
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AGN & black holes
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Radio telescopes
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Optical Observations
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Space telescopes
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Planetary exploration
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Astrochemistry
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