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Paper detail

Thin accretion disks and charged rotating dilaton black holes

Einstein-Maxwell-dilaton theory is an interesting theory of gravity for studying scalar fields in the context of no-hair theorem. In this work, we consider static charged dilaton and charged, slowly rotating dilaton black holes in Einstein-Maxwell-dilaton gravity. We investigate the accretion process in thin disks around such black holes, using the Novikov-Thorne model. The electromagnetic flux, temperature distribution, energy conversion efficiency and also innermost stable circular orbits of thin disks are obtained and effects of dilaton and rotation parameters are studied. For the static and slowly rotating black holes the results are compared to that of Schwarzschild and Kerr, respectively.

preprint2020arXivOpen access
Mohaddese Heydari-FardMalihe Heydari-FardHamid Reza Sepangi
gr-qchep-th
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Mohaddese Heydari-FardMalihe Heydari-FardHamid Reza Sepangi

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