Astronomy and Astrophysics – Astrophysics
Scientific paper
2003-10-15
Astronomy and Astrophysics
Astrophysics
4 pages, 1 figure, To appear in "Young Neutron Stars and Their Environments" (IAU Symposium 218, ASP Conference Proceedings),
Scientific paper
We present a model of a pulsar-driven supernova remnant, by using a hydrodynamics code, which simulates the evolution of a pulsar wind nebula when the pulsar is moving at a high velocity through its expanding supernova remnant. The simulation shows four different stages of the pulsar wind nebula: the supersonic expansion stage, the reverse shock interaction stage, the subsonic expansion stage and ultimately the bow shock stage. Due to the high velocity of the pulsar, the position of the pulsar is located at the head of the pulsar wind bubble, after the passage of the reverse shock. The resulting morphology of the pulsar wind bubble is therefore similar to the morphology of a bow shock pulsar wind nebula. We show how to distinguish these two different stages, and apply this method to the SNR G327.1-1.1, for which we argue that there is no bow shock around its pulsar wind nebula.
der Swaluw Eric van
Downes Turlough P.
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