# Kerr-Sen-Taub-NUT spacetime and circular geodesics

## TL;DR

This paper introduces a new solution in heterotic string theory describing a rotating, charged spacetime with gravitomagnetic monopole moment, and analyzes circular geodesics within this geometry.

## Contribution

It presents a novel Kerr-Sen-Taub-NUT solution with detailed conserved charges and investigates test particle circular motions in this spacetime.

## Key findings

- New exact solution in heterotic string theory
- Conserved charges characterized for the spacetime
- Analysis of circular geodesics and particle motion

## Abstract

We present a novel solution obeying classical equation of motion in the low energy limit of heterotic string theory. The solution represents a rotating mass with electric charge and gravitomagnetic monopole moment. The corresponding conserved charges are discussed. We also study the test body circular equatorial motions in the spacetime.