A Comparison of Millisecond Pulsar Populations between Globular Clusters and the Galactic Field

Jongsu Lee, C. Y. Hui, J. Takata, A. K.H. Kong, Pak Hin Thomas Tam, Kwan Lok Li, K. S. Cheng

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

We have performed a systematic study of the rotational, orbital, and X-ray properties of millisecond pulsars (MSPs) in globular clusters (GCs) and compared their nature with those of the MSPs in the Galactic field (GF). We found that GC MSPs generally rotate slower than their counterparts in the GF. Different from the expectation of a simple recycling scenario, no evidence for the correlation between the orbital period and the rotation period can be found in the MSP binaries in GCs. There is also an indication that the surface magnetic field of GC MSPs is stronger than those in the GF. All these suggest dynamical interactions in GCs can alter the evolution of MSPs/their progenitors, which can leave an imprint on their X-ray emission properties. While the MSPs in both GF and GCs have similar distributions of X-ray luminosity and hardness, our sample supports the notion that these two populations follow different relations between the X-ray luminosity and spin-down power. We discuss this in terms of both the pulsar emission model and the observational bias.

原文English
文章編號225
期刊Astrophysical Journal
944
發行號2
DOIs
出版狀態Published - 2023 2月 1

All Science Journal Classification (ASJC) codes

  • 天文和天體物理學
  • 空間與行星科學

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