The Structure and Spectrum of W44 s Pulsar Wind Nebula

Details The Structure and Spectrum of W44 s Pulsar Wind Nebula The Structure and Spectrum of W44 s Pulsar Wind Nebula

Sep 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004cxo..prop.1708p&link_type=abstract

Chandra Proposal ID #06500653

Physics

Chandra Proposal Id #06500653

Scientific paper

The evolved SNR W44 contains the oldest known Pulsar Wind Nebula (PWN) with an active pulsar. The PWN is an important evolutionary link between younger pulsars in PWNe (like the Crab) and the large population of radio pulsars. An off-axis ACIS observation provided the first image of the PWN, and allowed measurement of the spectral index of the pulsar and nebula. The poor resolution afforded only an upper limit for the termination shock radius, and precluded study of the interaction between the PWN and the surrounding gas. We propose a deep, on-axis ACIS-S observation to provide a clear view of the pulsar and PWN, and perform spectroscopy over more regions. We will obtain refined values of PWN parameters, and better understand its evolution and interaction with its environment.

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