PERISTOLE: PackagE that geneRates tIme delay plotS caused by graviTatiOnaL lEnsing

TL;DR

PERISTOLE is an open-source Python tool designed to analyze various gravitational and rotational time delays in binary pulsar systems, aiding researchers in studying relativistic effects.

Contribution

It introduces a new software package that calculates multiple types of time delays in pulsar systems, facilitating quick analysis and comparison of relativistic phenomena.

Findings

Successfully applied to the J0737-3039 pulsar system

Provides detailed delay components including gravitational lensing

Enables systematic study of parameter effects on pulsar timing

Abstract

We present PERISTOLE to study the various time delays associated with the pulsar rotation and other general relativistic aspects of binary pulsars. It is made available as an open-source python package which takes some parameters of the double pulsar system as input and outputs the rotational and latitudinal lensing delays along with the geometric and Shapiro delays that arise due to gravitational lensing. This package was intended to provide a way to quickly analyse, evaluate and study the differences between variations of the same systems and also to quantify the consequences that different parameters have over the system. Through this research note, we briefly describe the motivation behind PERISTOLE and showcase its capabilities using the only double pulsar system ever found, J0737-3039.