Radiation properties of the accretion disk around a black hole in Einstein-Maxwell-scalar theory*
Mirzabek Alloqulov, Institute of Fundamental and Applied Research, National Research University TIIAME, Kori Niyoziy 39, Tashkent 100000, Uzbekistan, Tashkent , UZBEKISTANSanjar ShaymatovZhejiang University of Technology, Institute for Theoretical Physics and Cosmology, Zheijiang University of Technology, Hangzhou 310023, China, Hangzhou, Zhejiang, 310014, CHINABobomurat AhmedovUlugh Beg Astron Inst, Astronomicheskaya 33, Tashkent, UZBEKISTANAbdul JawadMathematics, COMSATS University Islamabad, Lahore Campus, CUI, Lahore-Pakistan, Lahore, 54000, PAKISTAN
ABI
Abstract
Abstract In this study, we explore the properties of a non-rotating black hole in the Einstein-Maxwell-scalar (EMS) theory and investigate the luminosity of the accretion disk surrounding it. We determine all the orbital parameters of particles in the accretion disk, including the radius of the innermost stable circular orbit (ISCO) with angular velocity, angular momentum, and energy. Further, we study the radiative efficiency for different values of black hole parameters. Finally, we analyze the flux, differential luminosity, and temperature of the accretion disk.
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