Updated Timing Parameters of two Massive Binary Pulsars: J0621+1002 and J0751+1807

Details Updated Timing Parameters of two Massive Binary Pulsars: J0621+1002 and J0751+1807 Updated Timing Parameters of two Massive Binary Pulsars: J0621+1002 and J0751+1807

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915909k&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #159.09; Bulletin of the American Astronomical Society,

Astronomy and Astrophysics

Astronomy

Scientific paper

Previous observations suggest that the pulsars in the J0621+1002 and J0751+1807 binary systems have large masses; in fact, the pulsar in J0751+1807 has been found to have a mass of 2.1 \pm 0.2 M\odot, making it the largest pulsar mass ever measured. J0621+1002 is an "intermediate-mass" binary system containing a 28.8 ms pulsar in a 8.3-day orbit about a white dwarf companion; J0751+1807 contains a 3.5 ms pulsar in a circular 6-hour orbit about a white dwarf. We have obtained new data from these two binary systems through a recent timing campaign with the Arecibo radio telescope. The new data will help to constrain the spin, astrometric and binary parameters of both systems and to clarify mass measurements. We present preliminary results from our updated timing analysis.

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