Revealing the nature of new unidentified INTEGRAL sources
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. However, 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 (and with which we identified more than 100 INTEGRAL objects) here we report the classification, through optical spectroscopy, of 25 unidentified high-energy sources mostly belonging to the recently published 4th IBIS survey.
Keywords
Cite
@article{arxiv.1002.1076,
title = {Revealing the nature of new unidentified INTEGRAL sources},
author = {N. Masetti and P. Parisi and E. Palazzi and L. Bassani and R. Landi and A. Malizia and F. Schiavone and J. B. Stephen and E. Jimenez-Bailon and V. Chavushyan and L. Morelli and E. Mason and G. Galaz and D. Minniti and A. J. Bird and A. J. Dean and V. A. McBride and P. A. Charles and A. Bazzano and P. Ubertini},
journal= {arXiv preprint arXiv:1002.1076},
year = {2015}
}
Comments
6 pages, 1 figure, 1 table; accepted for publication in the Proceedings of HEPRO-II Conference (International Journal of Modern Physics D, in press; eds. G.E. Romero, F.A. Aharonian and J.M. Paredes)