Pulsar scattering in space and time
Talk presented in the 11th EVN Symposium 2012 in Bordeaux, 11 October 2012
O. Wucknitz [1,2]
- Max-Planck-Institut für Radioastronomie, Auf dem Hügel 69, 53121 Bonn, Germany
- Argelander-Institut für Astronomie, Auf dem Hügel 71, 53121 Bonn, Germany
Abstract
I report on a recent global VLBI experiment in which I study the scatter broadening of pulsars in the spatial and time domain simultaneously.
Depending on the distribution of scattering screen(s), geometry predicts that the less spatially broadened parts of the signal arrive earlier than the more broadened parts. This means that over one pulse period the size of the scattering disk should grow from pointlike to the maximum size. An equivalent description is that the pulse profile shows less temporal broadening on the longer baselines.
In this talk I will show the first results and discuss if/how the autocorrelations can be used for the amplitude calibration. This requires a thorough investigation of the digitisation and the sampler statistics.
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Script last modified on 7 Sep 2010
Last change to this data base entry on 8 Oct 2012