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BeppoSAX Observations of the Atoll X-Ray Binary 4U0614+091

S. Piraino·A. Santangelo·E. C. Ford·P. Kaaret
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Abstract

We report the first simultaneous measurement of the broad band X-ray (0.3-150 keV) spectrum of the neutron star x-ray binary 4U0614+091. Our data confirm the presence of a hard x-ray tail that can be modeled as thermal Comptonization of low-energy photons on electrons having a very high temperature, greater than 220 keV, or as a non-thermal powerlaw. We detected a spectral feature that can be interpreted as reprocessing, via Compton reflection, of the direct emission by an optically-thick disk and found a correlation between the photon index of the power-law tail and the fraction of radiation reflected which is similar to the correlation found for black hole candidate x-ray binaries and Seyfert galaxies.

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S. Piraino, A. Santangelo, E. C. Ford, P. Kaaret. 1999-10-06. BeppoSAX Observations of the Atoll X-Ray Binary 4U0614+091. https://arxiv.org/abs/astro-ph/9910115

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