Resolved atomic lines reveal outflows in two ultraluminous X-ray sources

Ciro Pinto (), Matthew J. Middleton and Andrew C. Fabian
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Ciro Pinto: Institute of Astronomy, Cambridge University
Matthew J. Middleton: Institute of Astronomy, Cambridge University
Andrew C. Fabian: Institute of Astronomy, Cambridge University

Nature, 2016, vol. 533, issue 7601, 64-67

Abstract: Ultraluminous X-ray sources are thought to be powered by accretion onto a compact object; now the discovery of X-ray emission lines and blueshifted absorption lines in the high-resolution spectra of ultraluminous X-ray sources NGC 1313 X-1 and NGC 5408 X-1 shows that in each case the compact object is surrounded by powerful winds with an outflow velocity of about 0.2 times that of light.

Date: 2016
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DOI: 10.1038/nature17417

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