# Anisotropic Mass Segregation in Rotating Globular Clusters

## TL;DR

This paper uses direct N-body simulations to reveal a new form of mass segregation in rotating globular clusters, where massive objects form a disk-like structure near the equator, affecting black hole distributions.

## Contribution

It introduces the concept of anisotropic mass segregation, showing a new inclination-based segregation in rotating clusters through detailed simulations.

## Key findings

- Mass segregation occurs in orbital inclinations, not just radial distribution.
- Massive objects form a disk-like structure near the equator.
- Implications for black hole spatial distribution in clusters.

## Abstract

We investigate the internal dynamics of anisotropic, rotating globular clusters with a multimass stellar population by performing new direct N-body simulations. In addition to the well-known radial mass segregation effect, where heavy stars and stellar remnants sink toward the center of the cluster, we find a mass segregation in the distribution of orbital inclinations as well. This newly discovered anisotropic mass segregation leads to the formation of a disk-like structure of massive objects near the equatorial plane of a rotating cluster. This result has important implications on the expected spatial distribution of black holes in globular clusters.