Gravitomagnetic measurement of the angular momentum of celestial bodies

TL;DR

This paper proposes a practical method to measure the angular momentum of celestial bodies by analyzing light signal asymmetries caused by gravitomagnetic effects, including frequency shifts.

Contribution

It introduces a novel procedure to detect gravitomagnetic effects and measure the angular momentum of celestial bodies through light signal asymmetries.

Findings

Frequency shifts due to gravitomagnetism are identified.

A practical measurement procedure is proposed.

Order of magnitude estimates are discussed.

Abstract

The asymmetry in the time delay for light rays propagating on opposite sides of a spinning body is analyzed. A frequency shift in the perceived signals is found. A practical procedure is proposed for evidencing the asymmetry, allowing for a measurement of the specific angular momentum of the rotating mass. Orders of magnitude are considered and discussed.