Oxford University Press, Monthly Notices of the Royal Astronomical Society, 3(328), p. 911-913, 2001
DOI: 10.1046/j.1365-8711.2001.04946.x
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We have detected the rare phenomenon of stable, drifting sub-pulse behaviour in two pulsars discovered in the recent Swinburne intermediate latitude pulsar survey. The pulsars; PSR J1231-47 and PSR J1919+0134, have approximate periods (P) of 1.873 and 1.6039 seconds respectively. Both pulsars have multi-component profiles, and distinct drifting is observed across them. We have identified a single drift mode in both pulsars: the drift rate for PSR J1231-47 being 5.4(1) ms P^{-1} and 5.8(2) ms P^{-1} for PSR 1919+0134. The drifting is linear across the profile with no departure from linearity at the edges within the sensitivity of our observations. ; Comment: 4 pages, 2 figures. Accepted by Monthly Notices of the Royal Astronomical Society