Some Applications of Binary Pulsars to Fundamental Physics

TL;DR

Binary pulsars serve as precise natural laboratories for testing fundamental physics, including matter under extreme density and gravitational theories, by measuring orbital parameters and testing modifications of General Relativity.

Contribution

This paper discusses novel methods for measuring the pulsar's moment of inertia and explores the potential of using mean anomaly as a new orbital parameter to test gravity theories.

Findings

Potential to measure pulsar moment of inertia accurately

Feasibility of using mean anomaly to test General Relativity

Insights into modified gravity models through pulsar observations

Abstract

Binary systems containing at least one radiopulsar are excellent laboratories to test several aspects of fundamental physics like matter properties in conditions of extreme density and theories of gravitation like the Einstein's General Theory of Gravitation (GTR) along with modifications/extensions of it. In this Chapter we focus on the perspectives on measuring the moment of inertia of the double pulsar, its usefulness in testing some modified models of gravity, and the possibility of using the mean anomaly as a further post-Keplerian orbital parameter to probe GTR.