Old Isolated Accreting Neutron Stars: the Diffuse X‐Ray Emission from the Galactic Center | Zendy

Silvia Zane | Zendy; R. Turolla | Zendy; A. Treves | Zendy

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Old Isolated Accreting Neutron Stars: the Diffuse X‐Ray Emission from the Galactic Center

Author(s) -

Silvia Zane,

R. Turolla,

A. Treves

Publication year - 1996

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/177966

Subject(s) - physics , astrophysics , neutron star , galactic center , luminosity , accretion (finance) , flux (metallurgy) , stars , astronomy , interstellar medium , x ray , galaxy , nuclear physics , materials science , metallurgy

The contribution of weakly--magnetized ($B\sim 10^9$ G) neutron starsaccreting the interstellar medium to the diffuse X--ray emission observed inthe Galactic Center is investigated. It is shown that, under ratherconservative assumptions about the neutron stars and gas distributions, theaccretion luminosity can account for a sizable fraction, possibly most, of thedetected X--ray flux in the 2.5--7 keV band. In particular, model results arecompared with {\it Granat\/} data and show a general agreement in both the fluxenergy and radial distributions.Comment: 10 pages, AASTEX, 3 figures, to be published in Ap

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