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arXiv · astro-ph/0108456

1RXS J214303.7+065419/RBS 1774: A New Isolated Neutron Star Candidate

L. Zampieri·S. Campana·R. Turolla·M. Chieregato·R. Falomo·D. Fugazza·A. Moretti·A. Treves
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Abstract

We report on the identification of a new possible Isolated Neutron Star candidate in archival ROSAT observations. The source 1RXS J214303.7+065419, listed in the ROSAT Bright Survey as RBS 1774, is very soft, exhibits a thermal spectrum well fitted by a blackbody at ${T}\sim 90$ eV and has a low column density, ${N_H}\sim 5\times 10^{20}$ ${cm}^{-2}$. Catalogue searches revealed no known sources in other energy bands close to the X-ray position of RBS 1774. Follow-up optical observations with NTT showed no peculiar object within the X-ray error circle. The absence of any plausible optical counterpart down to ${m_R}\sim 23$ results in an X-ray to optical flux ratio in excess of 1000.

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L. Zampieri, S. Campana, R. Turolla, M. Chieregato, R. Falomo, D. Fugazza, A. Moretti, A. Treves. 2001-09-07. 1RXS J214303.7+065419/RBS 1774: A New Isolated Neutron Star Candidate. https://doi.org/10.1051/0004-6361%3A20011151

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