The nature of 19 X-ray sources detected with INTEGRAL

2011/12/01 by N. Masetti, P. Parisi, Masetti, N. +31
Engineering · Medicine · Physics and Astronomy · #Advanced X-ray and CT Imaging #FOS: Physical sciences #High Energy Astrophysical Phenomena (astro-ph.HE) #Medical Imaging Techniques and Applications #Particle Detector Development and Performance

paper · pdf · doi:10.48550/arxiv.1112.0318

openalex publication_date 2011/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

Since its launch on October 2002, the INTEGRAL satellite has revolutionized our knowledge of the hard X-ray sky thanks to its unprecedented imaging capabilities and source detection positional accuracy above 20 keV. Nevertheless, many of the newly-detected sources in the INTEGRAL sky surveys are of unknown nature. The combined use of available information at longer wavelengths (mainly soft X-rays and radio) and of optical spectroscopy on the putative counterparts of these new hard X-ray objects allows pinpointing their exact nature. Continuing our long-standing program running since 2004, here we report the classification, through optical spectroscopy, of 19 more unidentified or poorly studied high-energy sources detected with the IBIS instrument onboard INTEGRAL.

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