1WGA J1346.5-6255: A New High-Mass Microquasar?

Details 1WGA J1346.5-6255: A New High-Mass Microquasar? 1WGA J1346.5-6255: A New High-Mass Microquasar?

Sep 2003

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003cxo..prop.1418b&link_type=abstract

Chandra Proposal ID #05400245

Computer Science

Chandra Proposal Id #05400245

Scientific paper

1WGA J1346.5-6255 is a marginally-extended ROSAT source coincident with the O-type star HD 119682. We have analyzed 35 ksec of recent XMM EPIC-PN archival data on this object and find that the spectrum is best-fit with a power-law with photon index ~1.7. Although some O stars are known to be X-ray emitters, their spectra are thermal in nature. The non-thermal spectrum of 1WGA J1346.5-6255 may point to a new High Mass X-ray Binary (HMXB) microquasar, such as was found for the case of the persistent HMXB microquasar LS 5039 (which also has an O-star companion). 1WGA J1346.5-6255 is embedded in a bipolar radio shell, similar to that of SS433/W50, and is intrinsically extended along the axis of the bipolar shell. We would like to image any jets/outflows which may explain the extension.

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