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Title:
The X-ray luminosity of rotation-powered neutron stars.
Authors:
Becker, W.; Truemper, J.
Publication:
Astronomy and Astrophysics, v.326, p.682-691 (A&A Homepage)
Publication Date:
10/1997
Origin:
A&A via CDS
A&A Keywords:
PULSARS: GENERAL, X-RAYS: STARS, STARS: NEUTRON
Bibliographic Code:
1997A&A...326..682B

Abstract

As a result of recent observations with ROSAT and ASCA the number of rotation-powered pulsars seen at X-ray energies has increased substantially. In this paper we review the phenomenology of the observed X-ray emission properties. At present 27 pulsars are detected, representing a wide range of ages (10^3^-7x10^9^yrs), magnetic field strength (10^8^-10^13^G) and spin periods (1.6-530ms). Despite these dispersions in parameters all pulsars show an X-ray luminosity closely correlated with the rotational energy loss. This suggests that most of the observed X-rays are produced by magnetospheric emission originating from the co-rotating magnetosphere. Only for three middle aged pulsars (PSR 0656+14, Geminga and PSR 1055-52) and probably for the Vela-pulsar an additional thermal component is detected which can be attributed to thermal emission from the neutron stellar surface.

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