Acis/hst Observations of Relativistic Wisps in the Crab Nebula

Physics

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Chandra Proposal Id #01500847

Scientific paper

The Crab Nebula offers a unique opportunity to study the physics of pulsar winds and relativistic plasmas. Comparison of ROSAT and HST observations reveals a fundamental connection between dynamic optical structure (e.g., wisps moving at 0.5c) and bright X-ray emission (e.g., the well-known X-ray torus). This connection is not surprising because both phenomena reflect the short lifetimes of the most energetic particles in the nebula. In an approved HST program we will monitor the Crab at 10-day intervals during 8 months in 1998-99. Here we request 5 AXAF ACIS visits to the Crab during this time. This X-ray/optical campaign offers a unique opportunity to tie the dynamical structure of the pulsar wind to the evolution of the particle population which is driving those dynamics.

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