14146 10.1140/epjc/s10052-025-14146-5 450 85 Charged compact star models in extended symmetric teleparallel gravity and influence of charge and coupling parameters on the star configuration Regular Article - Theoretical Physics Theoretical Physics 1 16 2025 4 2 2025 2 11 2025 3 30 2025 4 24 The Author(s) 2025 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ . Funded by SCOAP3. 10052 85 85 4 4 S. K. Maurya sunil@unizwa.edu.om Fadhila Al Khayari fadhila@unizwa.edu.om G. Mustafa gmustafa3828@gmail.com Baiju Dayanandan baiju@unizwa.edu.om Phongpichit Channuie phongpichit.ch@mail.wu.ac.th Farruh Atamurotov atamurotov@yahoo.com https://ror.org/01pxe3r04 grid.444752.4 0000 0004 0377 8002 Department of Mathematical and Physical Sciences, College of Arts and Sciences University of Nizwa 616 Nizwa Sultanate of Oman https://ror.org/01vevwk45 grid.453534.0 0000 0001 2219 2654 Department of Physics Zhejiang Normal University Jinhua 321004 People’s Republic of China https://ror.org/01pxe3r04 grid.444752.4 0000 0004 0377 8002 Natural and Medical Sciences Research Center University of Nizwa 616 Nizwa Sultanate of Oman https://ror.org/04b69g067 grid.412867.e 0000 0001 0043 6347 School of Science Walailak University Nakhon Si Thammarat 80160 Thailand https://ror.org/04b69g067 grid.412867.e 0000 0001 0043 6347 College of Graduate Studies Walailak University Nakhon Si Thammarat 80160 Thailand https://ror.org/035v3tr79 0000 0005 0985 3584 New Uzbekistan University Movarounnahr Street 1 100000 Tashkent Uzbekistan https://ror.org/0593kfr97 grid.449883.a 0000 0004 0403 3707 Urgench State University Kh. Alimdjan str. 14 Urgench 220100 Uzbekistan Abstract In this paper, the modified field equations in the context of Extended symmetric teleparallel gravity theory are considered for isotropic and charged compact stellar configuration. In order to obtain an exact solution to the modified field equations, we find an isotropy condition of the charge matter distribution in extended symmetric teleparallel gravity. After that, a regular and well-behaved electric field and a metric potential ansatz are used to solve this isotropy condition. Based on this specific choice, the obtained exact solution hence represents the characteristics and features of the stellar system such as charge, density, and pressure which are shown to be physically valid. The adiabatic stability condition as well as the influence of non-minimal coupling of non-metricity scalar and trace of energy–momentum tensor on stellar configuration have been performed. The present gravitational model investigates some known observed compact stars, viz. PSR J074 +6620, PSR J2215+5135, PSR J1748-2446ao, and GW190814 successfully by exploring mass-radius relationship enabling the model parameters. The present model describing the physical star with isotropic fluid and density of the order of 10 14 g/ cm 3 is unable to account for the radii of the star falling in the mass gap region with respect to the parameters representing non-metricity and electric field. An increase in a model parameter representing the matter part in the non-minimal coupling justifies the existence of the compact stars in mass gap regions like GW190814 with predicted radii in the range [10.87, 12.49] km in the present isotropic charged stellar model in extended symmetric teleparallel gravity.