# Globular cluster x-ray sources

@article{Pooley2010GlobularCX,
title={Globular cluster x-ray sources},
author={David Pooley},
journal={Proceedings of the National Academy of Sciences},
year={2010},
volume={107},
pages={7164 - 7167}
}
• D. Pooley
• Published 14 April 2010
• Physics
• Proceedings of the National Academy of Sciences
Globular clusters and x-ray astronomy have a long and fruitful history. Uhuru and OSO-7 revealed highly luminous (> 1036 ergs-1) x-ray sources in globular clusters, and Einstein and ROSAT revealed a larger population of low-luminosity (< 1033 ergs-1) x-ray sources. It was realized early on that the high-luminosity sources were low-mass x-ray binaries in outburst and that they were orders of magnitude more abundant per unit mass in globular clusters than in the rest of the galaxy. However, the…

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## References

SHOWING 1-10 OF 60 REFERENCES
X-ray sources and their optical counterparts in the globular cluster M4
• Physics
• 2004
We report on the Chandra X-Ray Observatory ACIS-S3 imaging observation of the Galactic globular cluster M4 (NGC 6121). We detect 12 X-ray sources inside the core and 19 more within the cluster
A Chandra X-Ray Study of the Globular Cluster M80
• Physics
• 2003
We report our analysis of a Chandra X-ray observation of the rich globular cluster M80, in which we detect some 19 sources to a limiting 0.5-2.5 keV X-ray luminosity of 7*10^30 ergs/s within the
Chandra Observation of the Globular Cluster NGC 6440 and the Nature of Cluster X-Ray Luminosity Functions
• Physics
• 2002
As part of our campaign to determine the nature of the various source populations of the low-luminosity globular cluster X-ray sources, we have obtained a Chandra X-Ray Observatory ACIS-S3 image of
High-Resolution X-ray Imaging of a Globular Cluster Core: Compact Binaries in 47Tuc
• Physics
Science
• 2001
These observations provide the first x-ray “color-magnitude” diagram for a globular cluster and census of its compact object and binary population.
X-ray evidence for white dwarf binaries in globular clusters
• Physics
• 1983
An apparently distinct class of low-luminosity (L/sub x/approx.10/sup 32/--10/sup 34/ ergs /sup -1/) X-ray sources has been discovered in globular clusters from a survey with the IPC detector on the
Analysis of the Quiescent Low-Mass X-Ray Binary Population in Galactic Globular Clusters
• Physics
• 2003
Quiescent low-mass X-ray binaries (qLMXBs) containing neutron stars have been identified in several globular clusters using Chandra or XMM X-ray observations, via their distinctive soft thermal
Chandra X-Ray Sources in the Collapsed-Core Globular Cluster M30 (NGC 7099)
• Physics
• 2006
We report the detection of six discrete, low-luminosity (LX < 1033 ergs s-1) X-ray sources, located within 12'' of the center of the collapsed-core globular cluster M30 (NGC 7099), and a total of 13
X-ray binaries in globular clusters
It appears to be very unlikely that primordial binaries in globular clusters have evolved to produce high-luminosity X-ray sources like the four variable sources detected in observations by the Uhuru
Globular Cluster X‐ray Sources in M31
The giant spiral galaxy M31 is close enough for a detailed study of accreting X-ray sources with luminosities comparable to those in the Milky Way. With the Einstein observatory Trinchieri’ and
A Chandra X-ray observation of the globular cluster Terzan 1
• Physics
• 2006
We present a ∼19-ks Chandra Advanced CCD Imaging Spectrometer (ACIS)-S observation of the globular cluster Terzan 1. 14 sources are detected within 1.4 arcmin of the cluster centre with two of these