Constraining the Orbital Geometry of the PSR J1740-3052 System

Details Constraining the Orbital Geometry of the PSR J1740-3052 System Constraining the Orbital Geometry of the PSR J1740-3052 System

Dec 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...20111805s&link_type=abstract

American Astronomical Society, 201st AAS Meeting, #118.05; Bulletin of the American Astronomical Society, Vol. 34, p.1298

Astronomy and Astrophysics

Astronomy

Scientific paper

The young pulsar PSR J1740-3052 is in a highly eccentric 8-month orbit with a companion of at least 11 solar masses. While a late-type star is coincident with the pulsar position, we have argued that this is a chance superposition and that the true pulsar companion is probably an early-B star hidden by the light of the late-type star. Here we present multifrequency Green Bank and Parkes Telescope data on this pulsar, which allow us to model the interaction of the pulsar signal with a B-star wind and to estimate the inclination angle of the orbit. We also report a preliminary detection of two precessional effects in the pulsar timing, allowing us to constrain the misalignment angle between the B-star spin axis and the orbital angular momentum.

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