Internal Dynamics of Globular Clusters

TL;DR

This paper reviews recent theoretical and observational advances in understanding the internal dynamics of globular clusters, highlighting their role as natural laboratories for studying stellar interactions and evolution.

Contribution

It provides a comprehensive summary of two decades of progress in modeling and observing globular cluster dynamics, emphasizing new insights into core collapse and stellar interactions.

Findings

Enhanced understanding of core collapse mechanisms

Improved observational data on mass segregation

Advances in modeling stellar collisions

Abstract

Galactic globular clusters, which are ancient building blocks of our Galaxy, represent a very interesting family of stellar systems in which some fundamental dynamical processes have taken place on time scales shorter than the age of the universe. In contrast with galaxies, these clusters represent unique laboratories for learning about two-body relaxation, mass segregation from equipartition of energy, stellar collisions, stellar mergers, and core collapse. In the present review, we summarize the tremendous developments, as much theoretical as observational, that have taken place during the last two decades, and which have led to a quantum jump in our understanding of these beautiful dynamical systems.