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Perera, B. B. P., Kim, C., McLaughlin, M. A., Ferdman, R. D. 
ORCID: https://orcid.org/0000-0002-2223-1235, Kramer, M., Stairs, I. H., Freire, P. C. C. and Possenti, A.
(2014)
Realistic modeling of the pulse profile of PSR J0737-3039A.
Astrophysical Journal, 787 (1).
ISSN 0004-637X
Abstract
The Double Pulsar, PSR J0737-3039A/B, is a unique system in which both neutron stars have been detected as radio pulsars. As shown in Ferdman et al., there is no evidence for pulse profile evolution of the A pulsar, and the geometry of the pulsar was fit well with a double-pole circular radio beam model. Assuming a more realistic polar cap model with a vacuum retarded dipole magnetosphere configuration including special relativistic effects, we create synthesized pulse profiles for A given the best-fit geometry from the simple circular beam model. By fitting synthesized pulse profiles to those observed from pulsar A, we constrain the geometry of the radio beam, namely the half-opening angle and the emission altitude, to be similar to 30 degrees and similar to 10 neutron star radii, respectively. Combining the observational constraints of PSR J0737-3039A/B, we are able to construct the full three-dimensional orbital geometry of the Double Pulsar. The relative angle between the spin axes of the two pulsars (Delta(S)) is estimated to be similar to(138 degrees +/- 5 degrees) at the current epoch and will likely remain constant until tidal interactions become important in similar to 85 Myr, at merger.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | general binaries,general pulsars,neutron stars |
| Depositing User: | LivePure Connector |
| Date Deposited: | 10 Jul 2018 15:30 |
| Last Modified: | 13 Jul 2023 10:30 |
| URI: | https://ueaeprints.uea.ac.uk/id/eprint/67571 |
| DOI: | 10.1088/0004-637X/787/1/51 |
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