Discovery And Timing Of The Psr J1741+1351 Binary Pulsar

Details Discovery And Timing Of The Psr J1741+1351 Binary Pulsar Discovery And Timing Of The Psr J1741+1351 Binary Pulsar

Jun 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.7206f&link_type=abstract

American Astronomical Society Meeting 208, #72.06

Astronomy and Astrophysics

Astronomy

Scientific paper

We present a new binary millisecond pulsar, PSR J1741+1351. This is a 3.74-ms pulsar in a circular 16-day orbit with a 0.3-solar mass white dwarf star. This system was discovered (and its basic orbital parameters determined) with the Parkes radiotelescope in a high galactic latitude survey. Recent Arecibo timing has achieved a 1-hour integration precision of 240 ns, placing this pulsar among the best timed ever. We detect a very significant proper motion, strong constraints on parallax (despite the fact that we have yet to complete the first year of Arecibo timing) and a precise measurement of the Shapiro delay. The values derived for the sine of the orbital inclination are 0.960 +/- 0.015, and the companion mass is 0.30 +/- 0.07 solar masses. These values and the precisely known mass function of 0.0053603923 solar masses imply a pulsar mass of 1.8 +/- 0.3 solar masses, a value that makes this system potentially very interesting for the study of super-dense matter: confirmation of this value to higher precision would exclude several equations of state.

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