Circinus X-1: the most relativistic jet source in the galaxy

Details Circinus X-1: the most relativistic jet source in the galaxy Circinus X-1: the most relativistic jet source in the galaxy

Oct 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009atnf.prop.2689f&link_type=abstract

ATNF proposal C2075, Semester: October, 2009

Physics

Transients, Atca

Scientific paper

Previous ATCA observations have revealed that Circinus X-1, an X-ray binary system with a neutron star acceretor, can produce an 'unseen' ultra-relativistic flow with bulk Lorentz factor >10, the fastest flow ever observed in our galaxy. Comparison of this jet with those from black holes acts as a perfect 'control' to see which aspects of black hole jet formation are actually associated with e.g. the ergosphere or event horizon, and not just products of the accretion flow. We propose for comprehensive monitoring of Circinus X-1 around an entire 17-day orbit, simultaneously with X-ray observations from the new Japanese facility, MAXI, onboard the international space station. These observations could provide a breakthrough in our understanding of the physics of the coupling between accretion and jet formation.

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