Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 2006
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...208.0402k&link_type=abstract
American Astronomical Society Meeting 208, #4.02; Bulletin of the American Astronomical Society, Vol. 38, p.81
Astronomy and Astrophysics
Astronomy
Scientific paper
The young, relativistic binary pulsar J1906+0746 was initially discovered during the "precursor" pulsar survey with the 7-beam Arecibo L-band Feed Array (ALFA) receiver using the 305-metre Arecibo telescope. It was subsequently found in archival Parkes Multibeam survey data. The 144-ms pulsar, in a 3.98-hour eccentric orbit, is likely to be the the younger of the two objects in the system. The companion could be either a white dwarf or a second neutron star, in which case it is likely to be a recycled pulsar. This is also the youngest binary known to contain a pulsar. Since its discovery, we have observed the system with a variety of telescopes including Arecibo, Green Bank, Jodrell Bank and Parkes.Here we present updated astrometric and binary timing parameters based on the current set of data, and discuss the implications for the stellar masses and the nature of the companion. We also describe our recent searches (using all available data) for pulsed signals from a potential neutron-star companion whose beam may be precessing into our line of sight.
Kasian Laura E.
PALFA Consortium
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