Is there a black hole in WR148questionMark

Among WolfRayet (WR) stars, WR148 (HD 197406) appears to be very unusual: it isan extreme runaway, singleline spectroscopic binary in which the companionstrongly ionizes the dense WR wind. It has been suggested that WR148 harbors acompact companion, most likely a black hole (BH). Using XMMNewton we willdetermine the nature of the companion: we will search for hard Xrays (typicallylarger than virgul6 keV) as the signature of a BH in WR148. We will also identify thesoft Xray (less than virgul2.5 keV) emission previously detected from this source. truncated!, Please see actual data for full text [truncated!, Please see actual data for full text]