Four S T U black holes shadows
Sekhmani Y. Jyoti Gogoi D. Myrzakulov R. Gaetano Luciano G. Rayimbaev J.
19 September 2024Institute of Physics
Classical and Quantum Gravity
2024#41Issue 18
In this work, we examine the optical behaviors and thermodynamic phase structures using shadow analysis for four S T U black holes. The study is conducted for four cases of charge configurations on the parameter space M ( q 1 , q 2 , q 3 , q 4 ) . As a matter of fact, both the electric charge as a parameter and the parameter space M ( q 1 , q 2 , q 3 , q 4 ) affect the geometry of the black hole shadow, particularly the size of the shadow. We also introduce a constraint on the charge of the black hole from the observational results of the M87 ⋆ and Sgr A ⋆ shadow. Furthermore, we show that the electric charge and the parameter space M ( q 1 , q 2 , q 3 , q 4 ) have a non-trivial impact on the variation of the energy emission rate. Interestingly enough, we find novel scenarios in which the evaporation is slower, which causes the lifetime of the black holes to be considerably elongated. On the other side, the phase structure of four S T U black holes is explored for two cases of electric charge configuration. The findings show a perfect correlation between the shadow and event horizon radii. This correlation is, in fact, helpful in discovering the phase transition in terms of the shadow radius. In addition, the microstructure is being analyzed in terms of shadow analysis, providing similar behavior to the ordinary situation of the Ruppeiner formalism.
Ruppeiner metric , shadows , STU , thermodynamics
Text of the article Перейти на текст статьи
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics, Astana, 010009, Kazakhstan
L. N. Gumilyov Eurasian National University, Astana, 010008, Kazakhstan
Department of Physics, Moran College, Assam, Charaideo, Moranhat, 785670, India
Theoretical Physics Division, Centre for Atmospheric Studies, Dibrugarh University, Assam, Dibrugarh, 786004, India
Department of Chemistry, Physics and Environmental and Soil Sciences, Escola Politecninca Superior, Universidad de Lleida, Av. Jaume II, 69, Lleida, 25001, Spain
Institute of Fundamental and Applied Research, National Research University TIIAME, Kori Niyoziy 39, Tashkent, 100000, Uzbekistan
University of Tashkent for Applied Sciences, Gavhar Str. 1, Tashkent, 100149, Uzbekistan
Shahrisabz State Pedagogical Institute, Shahrisabz Str. 10, Shahrisabz, 181301, Uzbekistan
Tashkent State Technical University, Tashkent, 100095, Uzbekistan
Ratbay Myrzakulov Eurasian International Centre for Theoretical Physics
L. N. Gumilyov Eurasian National University
Department of Physics
Theoretical Physics Division
Department of Chemistry
Institute of Fundamental and Applied Research
University of Tashkent for Applied Sciences
Shahrisabz State Pedagogical Institute
Tashkent State Technical University
10 лет помогаем публиковать статьи Международный издатель
Книга Публикация научной статьи Волощук 2026 Book Publication of a scientific article 2026