Black holes can be fully characterized by only three physical quantities: their mass, spin and
Dr. Lior Burko of Theiss Research inCollaboration with Professor Gaurav Hannah of the University of Massachusetts Dartmouth and the University of Rhode Island, together with his former student Dr. Subir Sabharwal, found that a special kind of black hole violates its uniqueness.
The team used intensive numericalSimulation: This involved the parallel use of dozens of high-performance Nvidia graphics processing units (GPUs) with over 5,000 cores each.
The authors of the work investigated black holes,"Saturated" with the maximum charge or spin they can carry. They found that there is a quantity that can be constructed from the curvature of spacetime at the horizon of a black hole: it is conserved and can be measured by a distant observer. Since this value depends on how the black hole was formed, and not only on the three classical attributes, it violates its uniqueness.
This quantity is gravitational hair.In the near future, according to scientists, it will be possible to measure it with new observatory equipment using a scalar field and spherical formations of objects. This finding is surprising, scientists say, as it applies to extreme black holes as well.
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