The pulsar content of globular clusters

Recent surveys of Galactic globular clusters have been very effective at discovering radio pulsars. By a careful analysis of selection effects in the various surveys, and after estimating the relative efficiency of pulsar production in the individual clusters, a census of the cluster population of p...

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Bibliographic Details
Published inThe Astrophysical journal Vol. 356; no. 1; pp. 174 - 183
Main Authors Kulkarni, Shrinivas R., Narayan, Ramesh, Romani, Roger W.
Format Journal Article
LanguageEnglish
Published Chicago, IL University of Chicago Press 10.06.1990
Subjects
Astronomy
BINARY STARS
CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS
COSMIC RADIO SOURCES
COSMIC RAY SOURCES
COSMIC X-RAY SOURCES
DETECTION
DWARF STARS
Earth, ocean, space
Exact sciences and technology
GALAXIES
Late stages of stellar evolution (including black holes)
LUMINOSITY
MATHEMATICAL MODELS
MILKY WAY
MOTION
Neutron stars
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
POPULATIONS
PULSARS
ROTATION
STAR CLUSTERS
STAR EVOLUTION
STAR MODELS
Stars
STARS 640102 > Astrophysics & Cosmology > Stars & Quasi-Stellar, Radio & X-Ray Sources
WHITE DWARF STARS
Neutron star
VLA observation
Binary X ray source
Globular cluster
Data table
Radiopulsar
X ray binary
Stellar evolution
Radio interferometric observation
Radio observation
Enumeration(counting)
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Summary:Recent surveys of Galactic globular clusters have been very effective at discovering radio pulsars. By a careful analysis of selection effects in the various surveys, and after estimating the relative efficiency of pulsar production in the individual clusters, a census of the cluster population of pulsars is obtained. It is found that there are about 10,000 pulsars in the Galactic globular clusters, subject to uncertainties in pulsar beaming and binarity. Such a large population poses severe problems for the standard model of pulsar production in clusters, unless the uncertain factors due to beaming and binary are pushed to values inconsistent with the present expectations. This suggests the need for a substantial modification of the standard model, either by including accretion-induced collapse of massive white dwarfs or by increasing the retention of primordial neutron stars in the clusters. 55 refs.
Bibliography:None
ISSN:0004-637X
1538-4357
DOI:10.1086/168828