Please use this identifier to cite or link to this item: https://hdl.handle.net/2445/221152
Title: Probing Populations of Dark Stellar Remnants in the Globular Clusters 47 Tuc and Terzan 5 Using Pulsar Timing
Author: Smith, Peter J.
Hénault-Brunet, V.
Dickson, Nolan
Gieles, Mark
Baumgardt, Holger
Keywords: Forats negres (Astronomia)
Cúmuls d'estels
Púlsars
Black holes (Astronomy)
Clusters of stars
Pulsars
Issue Date: 7-Nov-2024
Publisher: Institute of Physics (IOP)
Abstract: We present a new method to combine multimass equilibrium dynamical models and pulsar timing data to constrainthe mass distribution and remnant populations of Milky Way globular clusters (GCs). We first apply this method to47 Tuc, a cluster for which there exists an abundance of stellar kinematic data and which is also host to a largepopulation of millisecond pulsars. We demonstrate that the pulsar timing data allow us to place strong constraintson the overall mass distribution and remnant populations even without fitting on stellar kinematics. Our modelsfavor a small population of stellar-mass black holes (BHs) in this cluster (with a total mass of -446+ M 72 75 ), arguing against the need for a large (>2000Me) central intermediate-mass BH. We then apply the method to Terzan 5, aheavily obscured bulge cluster that hosts the largest population of millisecond pulsars of any Milky Way GC andfor which the collection of conventional stellar kinematic data is very limited. We improve existing constraints onthe mass distribution and structural parameters of this cluster and place stringent constraints on its black holecontent, finding an upper limit on the mass in BHs of ∼4000Me. This method allows us to probe the centraldynamics of GCs even in the absence of stellar kinematic data and can be easily applied to other GCs with pulsartiming data, for which data sets will continue to grow with the next generation of radio telescopes.
Note: Reproducció del document publicat a: https://doi.org/10.3847/1538-4357/ad77bc
It is part of: Astrophysical Journal, 2024, vol. 975, num.2
URI: https://hdl.handle.net/2445/221152
Related resource: https://doi.org/10.3847/1538-4357/ad77bc
ISSN: 0004-637X
Appears in Collections:Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB))

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