TOWARDS A PHYSICAL INTERPRETATION OF THE ANGULAR MOMENTUM PARAMETER ASSOCIATED WITH THE KERR METRIC

TL;DR

This paper explores the physical meaning of the Kerr metric's angular momentum parameter, linking it to the induced quadrupole electric field and comparing it with Newtonian analogs to clarify its interpretation.

Contribution

It provides a physical interpretation of the Kerr metric's angular momentum parameter by relating it to induced electric fields and Newtonian comparisons.

Findings

Parameter 'a' corresponds to angular momentum per unit mass.

Induced quadrupole electric field outside a rotating object.

Comparison with Newtonian case clarifies the physical meaning.

Abstract

The role of the parameter `$a$' associated with the Kerr metric which represents the angular momentum per unit mass of a rotating massive object has been converted into determining the rotationally induced quadrapole electric field outside a rotating massive object with external dipole magnetic field. A comparison of the result with that of the Newtonian case implies that the parameter `$a$' represents the angular momentum per unit mass of a rotating hollow object.