Spectral analysis of X-ray pulsars with the INTEGRAL observatory

2) ((1) Space Research Institute; (2) Max Plank Institute fur Astrophysics; A.A. Lutovinov (1); E.V. Filippova (1); Garching; Germany); Moscow; R.A. Sunyaev (1; Russia; S.S. Tsygankov (1)

arxiv: astro-ph/0610782 · v1 · submitted 2006-10-26 · 🌌 astro-ph

Spectral analysis of X-ray pulsars with the INTEGRAL observatory

E.V. Filippova (1) , S.S. Tsygankov (1) , A.A. Lutovinov (1) , R.A. Sunyaev (1 , 2) ((1) Space Research Institute , Moscow , Russia , (2) Max Plank Institute fur Astrophysics

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Garching Germany)

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classification 🌌 astro-ph

keywords pulsarsintegralobservatoryspectralstudiedwerex-rayaccretion-powered

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We studied spectra for 34 accretion-powered X-ray and one millisecond pulsars that were within the field of view of the INTEGRAL observatory over two years (December 2002 - January 2005) of its in-orbit operation and that were detected by its instruments at a statistically significant level (>8 sigma in the energy range 18-60 keV). There are seven recently discovered objects of this class among the pulsars studied: 2RXP J130159.6-635806, IGR/AX J16320-4751, IGR J16358-4726, AX J163904-4642, IGR J16465-4507, SAX/IGR J18027-2017 and AX J1841.0-0535. We analyze the evolution of spectral parameters as a function of the intensity of the sources and compare these with the results of previous studies.

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Spectral analysis of X-ray pulsars with the INTEGRAL observatory

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