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Schwarzschild black holes can wear scalar wigs
Juan Barranco1, Argelia Bernal, Juan Carlos Degollado
1Departamento de Física, División de Ciencias e Ingeniería, Campus León, Universidad de Guanajuato, León 37150, Mexico.
Abstract:
We study the evolution of a massive scalar field surrounding a Schwarzschild black hole and find configurations that can survive for arbitrarily long times, provided the black hole or the scalar field mass is small enough. In particular, both ultralight scalar field dark matter around supermassive black holes and axionlike scalar fields around primordial black holes can survive for cosmological times. Moreover, these results are quite generic in the sense that fairly arbitrary initial data evolve, at late times, as a combination of those long-lived configurations.
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