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Population of Accreting Neutron Stars in External Galaxies

Published online by Cambridge University Press:  04 August 2017

Ginevra Trinchieri
Ginevra Trinchieri*
Affiliation:
Osservatorio Astrofisico di Arcetri, Largo E. Fermi 5, 50125 FIRENZE

Extract

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The X-ray observations of the Milky Way galaxy with non-imaging X-ray satellites (e.g. UHURU, HEAO1) has revealed a number of discrete, point -like bright sources clustered around the Galaxy's center (in the bulge region) and on the plane of the Galaxy (see for example Tanambaum and Tucker, 1984). The brightermost ones have been associated with close accreting binary systems, containing an evolved object (a white dwarf, a neutron star or a black hole) and a companion visible star. For sources with X-ray luminosities Lx≦1038 erg s−1, the compact object needs to be a neutron star or a black hole.

Type
II. Accretion Powered Pulsars
Information
Symposium - International Astronomical Union , Volume 125: The Origin and Evolution of Neutron Stars , 1987 , pp. 149 - 159
Copyright
Copyright © Reidel 1987 

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