THE NON-THERMAL RADIO EMITTER HD 93250 RESOLVED BY LONG BASELINE INTERFEROMETRY
THE NON-THERMAL RADIO EMITTER HD 93250 RESOLVED BY LONG BASELINE INTERFEROMETRY
As the brightest O-type X-ray source in the Carina nebula, HD 93250 (O4 III(fc)) is X-ray overluminous for its spectral type and has an unusually hard X-ray spectrum. Two different scenarios have been invoked to explain its X-ray properties: wind–wind interaction and magnetic wind confinement. Yet, HD 93250 shows absolutely …