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  • Resolving the X-ray emissio...
    Kaaret, P; Brorby, M; Casella, L; Prestwich, A. H

    Monthly notices of the Royal Astronomical Society, 11/2017, Letnik: 471, Številka: 4
    Journal Article

    Abstract Chandra observations of the nearby, Lyman-continuum (LyC) emitting galaxy Tol 1247-232 resolve the X-ray emission and show that it is dominated by a point-like source with a hard spectrum (Γ = 1.6 ± 0.5) and a high luminosity (9 ± 2) × 1040 erg s− 1. Comparison with an earlier XMM–Newton observation shows flux variation of a factor of 2. Hence, the X-ray emission likely arises from an accreting X-ray source: a low-luminosity active galactic nucleus or one or a few X-ray binaries. The Chandra X-ray source is similar to the point-like, hard spectrum (Γ = 1.2 ± 0.2), high-luminosity (1041 erg s− 1) source seen in Haro 11, which is the only other confirmed LyC-emitting galaxy that has been resolved in X-rays. We discuss the possibility that accreting X-ray sources contribute to LyC escape.