extremal Reissner–Nordström black hole
                        
                            GPTKB entity
                        
                    
                Statements (21)
| Predicate | Object | 
|---|---|
| gptkbp:instanceOf | gptkb:solution_in_general_relativity gptkb:black_hole | 
| gptkbp:has_electric_charge | maximum possible for its mass | 
| gptkbp:has_entropy | nonzero | 
| gptkbp:has_event_horizon | degenerate | 
| gptkbp:has_inner_and_outer_horizons | coincide | 
| gptkbp:has_no_Hawking_radiation | yes | 
| gptkbp:has_singularity | timelike | 
| gptkbp:has_surface_gravity | zero | 
| gptkbp:has_temperature | zero | 
| gptkbp:importantFor | gptkb:black_hole_thermodynamics gptkb:string_theory | 
| gptkbp:includesMetric | gptkb:Reissner–Nordström_metric | 
| gptkbp:is_a_limit_of | gptkb:Reissner–Nordström_black_hole | 
| gptkbp:is_solution_to | gptkb:Einstein–Maxwell_equations | 
| gptkbp:mass | equal to charge (in geometric units) | 
| gptkbp:studiedBy | gptkb:theoretical_physics | 
| gptkbp:symmetry | spherical symmetry | 
| gptkbp:bfsParent | gptkb:Reissner–Nordström_black_hole | 
| gptkbp:bfsLayer | 6 | 
| https://www.w3.org/2000/01/rdf-schema#label | extremal Reissner–Nordström black hole |