Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011aipc.1357..105p&link_type=abstract
RADIO PULSARS: AN ASTROPHYSICAL KEY TO UNLOCK THE SECRETS OF THE UNIVERSE. AIP Conference Proceedings, Volume 1357, pp. 105-108
Astronomy and Astrophysics
Astrophysics
Relativity, Neutron Stars, Telescopes, Radiometers, Relativity And Gravitation, Neutron Stars, Space-Based Ultraviolet, Optical, And Infrared Telescopes, Photometers, Radiometers, And Colorimeters
Scientific paper
We present the evolution of the radio emission from the 2.8-s pulsar of the double pulsar system PSR J0737-3039A/B. We describe the changes in the pulse profile and flux density over five years of observations, culminating in the B pulsar's radio disappearance in 2008 March. Over this time, the flux density decreased by 0.177 mJy yr-1 at the brightest orbital phases and the pulse profile evolved from a single to a double peak. Relativistic spin precession, coupled with an elliptical beam, can model the pulse profile evolution well and the reappearance is expected to happen in ~2035 with the same part of the beam or in ~2014 if we assume a symmetric beam shape.
Breton Rene P.
Burgay Marta
Camilo Fernando
Ferdman Robert D.
Freire Paulo C.
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