19-23 October 2020
Europe/Prague timezone
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Levitating atmospheres around naked singularities

22 Oct 2020, 17:15


Prof. Ronaldo Vieira (Federal University of ABC, Brazil)


For a wide class of spherically symmetric naked singularities there is a sphere within which gravity is effectively repulsive. In such space-times accreting matter cannot reach the singularity and will instead form a levitating atmosphere, which is kept suspended by gravity alone. The density of the atmosphere has a maximum at a definite radius. In its properties the atmosphere is analogous to the recently discussed atmospheres that are are supported by radiation pressure above luminous neutron stars, however for the levitating atmospheres around a naked singularity no radiation need to be present.

Primary authors

Prof. Ronaldo Vieira (Federal University of ABC, Brazil) Prof. Wlodek Kluzniak (Nicolaus Copernicus Astronomical Center)

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