Exploring the nature of ultra-luminous X-ray sources across stellar population ages using detailed binary evolution calculations

[Context] Ultra-luminous X-ray sources (ULXs) are sources observed to have extreme X-ray luminosities exceeding the Eddington limit of a stellar-mass black hole (BH). A fraction of ULXs show X-ray pulsations, which are evidence for accreting neutron stars (NSs). Theoretical studies have suggested th...

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Bibliographic Details
Authors: Misra, Devina, Kovlakas, Konstantinos, Fragos, Tassos, Andrews, Jeff J., Bavera, Simone S., Zapartas, Emmanouil, Xing, Zepei, Dotter, Aaron, Rocha, Kyle A., Srivastava, Philipp M., Sun, Meng
Format: article
Status:Published version
Publication Date:2024
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/357527
Online Access:http://hdl.handle.net/10261/357527
Access Level:Open access
Keyword:Accretion
Accretion disks
Methods: numerical
Binaries: close
Stars: black holes
Stars: neutron
X-rays: binaries
Description
Summary:[Context] Ultra-luminous X-ray sources (ULXs) are sources observed to have extreme X-ray luminosities exceeding the Eddington limit of a stellar-mass black hole (BH). A fraction of ULXs show X-ray pulsations, which are evidence for accreting neutron stars (NSs). Theoretical studies have suggested that NSs, rather than BHs, dominate the compact objects of intrinsic ULX populations, even though the majority of the observed sample is non-pulsating, implying that X-ray pulses from many NS ULXs are unobservable.

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