https://doi.org/10.1140/epjc/s10052-026-16028-w
Regular Article - Theoretical Physics
Beyond neutral spheres: Shaping realistic charged anisotropic stars with extended deformation strategy
1
Department of Mathematics and Statistics, The University of Lahore, 1-KM Defence Road, 54000, Lahore, Pakistan
2
Research Center of Astrophysics and Cosmology, Khazar University, 41 Mehseti Street, AZ1096, Baku, Azerbaijan
3
Department of Mathematical Sciences, College of Science, Princess Nourah bint Abdulrahman University, P.O. Box 84428, 11671, Riyadh, Saudi Arabia
4
Department of Physics, College of Sciences, University of Bisha, 61922, Bisha, Saudi Arabia
a
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b
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Received:
16
February
2026
Accepted:
21
June
2026
Published online:
6
July
2026
Abstract
This work utilizes the extended geometric deformation approach within the Einstein’s theory of gravity to generate two novel anisotropic charged solutions by extending known seed models. The anisotropic fluid distribution is initially introduced in a static, spherically symmetric seed structure in order to achieve this goal. The gravitational coupling of the additional matter source to the original fluid distribution is further performed through the addition of a Lagrangian density. The temporal and radial metric transformations are applied to the field equations for the entire matter configuration, producing two sets of decoupled equations. Different constraints are used to solve these systems independently, producing new classes of solutions. Additionally, the internal and exterior geometries at the boundary are matched to find the integration constants in the proposed solutions. Afterwards, the predicted radius and mass of a star candidate, 
, are used to graphically examine the suggested models. In conclusion, our charged relativistic models fit the acceptability requirements for the physical existence quite well for specific values of the decoupling parameter.
© The Author(s) 2026
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