Astronomy Letters

, Volume 30, Issue 8, pp 534–539 | Cite as

A hard X-ray survey of the Sagittarius Arm tangent with the IBIS telescope of the INTEGRAL observatory: A catalog of sources

  • S. V. Molkov
  • A. M. Cherepashchuk
  • A. A. Lutovinov
  • M. G. Revnivtsev1
  • K. A. Postnov
  • R. A. Sunyaev
Article

Abstract

We analyze the images of the Sagittarius Arm tangent obtained with the IBIS telescope of the INTEGRAL observatory in the energy range 18–120 keV during its observations in the spring of 2003. We detected 28 sources at a statistically significant level with fluxes above 1.4 mCrab in the energy range 18–60 keV. Of these sources, 16 were previously identified as binaries of various classes in our Galaxy, 3 were identified as extragalactic objects, 2 were identified as pulsars in supernova remnants, and 7 sources were of an unknown nature. These observations revealed three new sources. A statistically significant flux in the energy range 60–120 keV was recorded from 13 sources.

Key words

Galaxy spiral arms hard X-ray sources 

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Copyright information

© MAIK "Nauka/Interperiodica" 2004

Authors and Affiliations

  • S. V. Molkov
    • 1
    • 2
  • A. M. Cherepashchuk
    • 1
    • 2
  • A. A. Lutovinov
    • 1
  • M. G. Revnivtsev1
    • 1
    • 3
  • K. A. Postnov
    • 2
  • R. A. Sunyaev
    • 1
    • 3
  1. 1.Space Research InstituteRussian Academy of SciencesMoscowRussia
  2. 2.Sternberg Astronomical InstituteMoscowRussia
  3. 3.Max Planck Institut für AstrophysikGarching bei MünchenGermany

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