Halo millisecond pulsars ejected by intermediate mass black holes in globular clusters

Abstract

Intermediate mass black holes (IMBHs) are among the most elusive objects in contemporary astrophysics. Both theoretical and observational evidence of their existence is subject of debate. Conversely, both theory and observations confirm the presence of a large population of millisecond pulsars (MSPs) with low mass companions residing in globular cluster (GC) centers. If IMBHs are common in GC centers as well, then dynamical interactions will inevitably break up many of these binaries, causing the ejection of several fast MSPs in the Galactic halo. Such population of fast halo MSPs, hard to produce with 'standard' MSP generation mechanisms, would provide a strong, albeit indirect, evidence of the presence of a substantial population of IMBHs in GCs. In this paper we study in detail the dynamical formation and evolution of such fast MSPs population, highlighting the relevant observational properties and assessing detection prospects with forthcoming radio surveys.

13 pages, 7 figures, 2 tables, accepted for publication in MNRAS

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Cited by in corpus (6)

• Gravitational Waves and Intermediate-mass Black Hole Retention in Globular Clusters
• On the coexistence of stellar-mass and intermediate-mass black holes in globular clusters
• Core-Collapse Supernovae in Binaries as the Origin of Galactic Hyper-Runaway Stars
• On the Existence of Pulsars in the Vicinity of the Massive Black Hole in the Galactic Center
• Hypervelocity stars from star clusters hosting Intermediate-Mass Black Holes
• Dynamically formed black hole+millisecond pulsar binaries in globular clusters