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The first broad-band persistent X-ray spectrum of the dipping low mass X-ray binary EXO 0748-676

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arxiv astro-ph/0404038 v1 submitted 2004-04-02 astro-ph

classification astro-ph
keywords spectrumcutoffdippingenergyfirstobservationpersistentx-ray
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We report on the results of a BeppoSAX observation of the dipping LMXRB EXO 0748-676 performed in 2000 November. This is the first simultaneous observation of this source over the 0.1-100 keV energy range. The persistent spectrum is complex and shows a soft excess, which requires the inclusion of an ionized absorber (with a sub-solar abundance of iron). A cutoff power-law is a good fit to the high energy part of the spectrum, with a photon index of 1.3 and a cutoff around 50 keV. The 0.1-100 keV luminosity is 8.2E36 erg/s.

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