Are Very Large Gravitational Redshifts Possible?
Open Access
- 1 March 1975
- journal article
- Published by Oxford University Press (OUP) in Monthly Notices of the Royal Astronomical Society
- Vol. 170 (3) , 643-649
- https://doi.org/10.1093/mnras/170.3.643
Abstract
Solutions of the Einstein–Maxwell equations exist for charged dust in equilibrium under its own gravitational attraction and electrical repulsion. We use these to construct solutions for a sphere and a spheroid. In both cases arbitrarily large gravitational redshifts are possible, but as the spheroid shrinks to a disc, the redshift remains finite. One of the solutions shows clearly how a horizon filters out non-spherically symmetric fields.Keywords
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