RT Journal Article T1 Modified spinning black holes A1 Jimeno Romero, Pablo A1 Ruiz Cembranos, José Alberto A1 Cruz Dombriz, Álvaro de la AB In the context of f(R) modified gravity theories we determine that the black holes existence is determined by the sign of a parameter dependent of the mass, the charge, the spin and the scalar curvature. We obtain the different astrophysical objects derived from the presence of different horizons. Thermodynamics for this kind of black holes is studied for negative values of the curvature, revealing that we can distinguish between two kind of BH: fast and slow. PB American Institute of Physics SN 0094-243x YR 2012 FD 2012-07 LK https://hdl.handle.net/20.500.14352/42755 UL https://hdl.handle.net/20.500.14352/42755 LA eng NO © 2012 American Institute of Physics. Spanish Relativity Meeting on Towards New Paradigms (ERE) (2011. Madrid, Spain). This work has been supported by MICINN (Spain) project numbers FIS 2008-01323, FIS2011-23000, FPA 2008 00592, FPA2011-27853-01, Consolider-Ingenio MULTIDARK CSD2009-00064 (Spain) and URC (South Africa). NO Ministerio de Ciencia e Innovación (MICINN) NO Consolider-Ingenio MULTIDARK , Spain NO URC (South Africa) DS Docta Complutense RD 4 abr 2025