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arXiv · 2511.08850

Modelling Millisecond Pulsar Populations in Globular Clusters with NBODY6++GPU

Yuzhe Song·Debatri Chattopadhyay·Jarrod Hurley·Rainer Spurzem·Francesco Flammini Dotti·Kai Wu
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Abstract

Millisecond pulsars (MSPs) are neutron stars with spin periods as short as a few milliseconds, formed through mass accretion from companion stars. In the dense environments of globular clusters (GCs), MSPs are likely to originate through dynamically assembled interacting binaries. Over 300 MSPs have been detected in GCs to date, more than half of the known Galactic MSP population. In this work, we model MSP populations in intermediate-mass GCs using the direct $N$-body code \textsc{NBODY6++GPU}. We update the code by implementing pulsar spin-down due to magnetic braking and spin-up through accretion, and use this framework to model the pulsar population in the globular cluster M71 to investigate the pulsar population within and the associated gravitational wave transients.

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Yuzhe Song, Debatri Chattopadhyay, Jarrod Hurley, Rainer Spurzem, Francesco Flammini Dotti, Kai Wu. 2025-11-12. Modelling Millisecond Pulsar Populations in Globular Clusters with NBODY6++GPU. https://arxiv.org/abs/2511.08850

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