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arXiv · astro-ph/9801222

The BeppoSAX Deep Surveys

P. Giommi·F. Fiore·D. Ricci·S. Molendi·M. C. Maccarone·A. Comastri
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Abstract

We present the preliminary results of a survey that makes use of several deep exposures obtained with the X-Ray telescopes of the BeppoSAX satellite. The survey limiting sensitivity is 5 x 10^-14 cgs in the 2-10 keV band and 7 x 10^-14 cgs in the harder 5-10 keV band. We find that the 2-10 keV LogN-LogS is consistent with that determined in ASCA surveys. The counts in the 5-10 keV band imply either a very hard average spectral slope or the existence of a population of heavily absorbed sources that can hardly be detected in soft X-ray surveys. A sample of 83 serendipitous sources has been compiled from a systematic search in 50 MECS images. The analysis of the hardness ratio of this sample also implies very hard or heavily cutoff spectral shapes.

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P. Giommi, F. Fiore, D. Ricci, S. Molendi, M. C. Maccarone, A. Comastri. 1998-01-23. The BeppoSAX Deep Surveys. https://doi.org/10.1016/s0920-5632(98)00301-6

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