The Mean Pulse Profile of PSR J0737-3039A | Zendy

R. N. Manchester | Zendy; M. Krämer | Zendy; Andrea Possenti | Zendy; A. G. Lyne | Zendy; M. Burgay | Zendy; I. H. Stairs | Zendy; A. W. Hotan | Zendy; M. A. McLaughlin | Zendy; D. R. Lorimer | Zendy; G. Hobbs | Zendy; John Sarkissian | Zendy; N. D’Amico | Zendy; F. Camilo | Zendy; B. C. Joshi | Zendy; P. C. C. Freire | Zendy

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The Mean Pulse Profile of PSR J0737-3039A

Author(s) -

R. N. Manchester,

M. Krämer,

Andrea Possenti,

A. G. Lyne,

M. Burgay,

I. H. Stairs,

A. W. Hotan,

M. A. McLaughlin,

D. R. Lorimer,

G. Hobbs,

John Sarkissian,

N. D’Amico,

F. Camilo,

B. C. Joshi,

P. C. C. Freire

Publication year - 2005

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/429128

Subject(s) - pulsar , physics , astrophysics , millisecond pulsar , pulse (music) , radio telescope , spin (aerodynamics) , interval (graph theory) , telescope , beam (structure) , general relativity , orbit (dynamics) , range (aeronautics) , astronomy , optics , theoretical physics , mathematics , detector , aerospace engineering , combinatorics , engineering , thermodynamics

General relativity predicts that the spin axes of the pulsars in thedouble-pulsar system (PSR J0737-3039A/B) will precess rapidly, in generalleading to a change in the observed pulse profiles. We have observed thissystem over a one-year interval using the Parkes 64-m radio telescope at threefrequencies: 680, 1390 and 3030 MHz. These data, combined with the short surveyobservation made two years earlier, show no evidence for significant changes inthe pulse profile of PSR J0737-3039A, the 22-ms pulsar. The limit on variationsof the profile 10% width is about 0.5 deg per year. These results imply anangle delta between the pulsar spin axis and the orbit normal of <~ 60 deg,consistent with recent evolutionary studies of the system. Although a widerange of system parameters remain consistent with the data, the model proposedby Jenet & Ransom (2004) can be ruled out. A non-zero ellipticity for theradiation beam gives slightly but not significantly improved fits to the data,so that a circular beam describes the data equally well within theuncertainties.Comment: 7 pages, 4 figures, accepted by ApJ Letter

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