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Kerr-Newman metric; deSitter universe; electromagnetic fields

In addition to the Kerr-Newman metric with cosmological constant several other metrics are presented giving Kerr-Newman type solutions of Einstein-Maxwell field equations in the background of deSitter universe. The electromagnetic field in all the solutions is assumed to be source-free. A new metric of what may be termed as an electrovac rotating de-Sitter space-time—a space-time devoid of matter but containing source-free electromagnetic field and a null fluid with twisting rays—has been presented. In the absence of the electromagnetic field, our solutions reduce to those discussed by Vaidya.

L K Patel¹ Sharda S Koppar¹ P V Bhatt^{1 2}

1. Department of Mathematics, Gujarat University, Ahmedabad - 380 009, India
2. Department of Mathematics, Saurashtra University, Rajkot - 360 005, India

Published

February 1987

Manuscript received

5 July 1986

Manuscript revised

13 October 1986