Parkes observations for project P282 semester 2006APRS

From 1989 to 2005, we have discovered a total of 23 millisecond pulsars in 47 Tucanae and obtained coherent timing solutions for 18 of those. This dataset has already allowed studies of stellar evolution and cluster dynamics and the first detection of the interstellar medium in a globular cluster. The remaining scientific objectives of this project can now be accomplished with less intensive, long-term timing: we want to keep track of the rotational phase of these pulsars and increase the number and precision of measured proper motions. We will also monitor the long-term behaviour of a few interesting systems: orbital change for a set of 4 eclipsing binary pulsars; check the existence of a planet orbiting 47TucH and check if the 47TucI-G association is really a wide double millisecond pulsar. The full analysis of all the previous data is ongoing: we have recently found a new pulsar (47TucZ) and determined the timing solutions of two others (the binary pulsar with the shortest orbital period, 47TucR, and 47TucY). This has allowed the identification of these two pulsars in X-rays using Chandra and the identification of the companion of 47TucY in optical HST data.