XMM-Newton Proposal 03044401

Details XMM-Newton Proposal 03044401 XMM-Newton Proposal 03044401

Oct 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004xmm..prop..153g&link_type=abstract

XMM-Newton Proposal ID #03044401

Computer Science

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Ctb 87, Xmm-Newton Proposal 03044401

Scientific paper

The existence of pulsar wind nebulae (PWNe) without associated supernova remnants (SNR) is a puzzle. The two most plausible explanations for the lack of a SNR shell are that the SN ejecta is expanding into a low-density bubble created by the massive star progenitor, or that the ejecta expelled in the SN explosion had an anomalously low kinetic energy. The simplest way to differentiate between these two models is to determine the composition of their surroundings. In this proposal, we request {it XMM} observations of two ``naked'' PWNe which appear to be interacting with their surroundings, a process that typically generates thermal X-rays. Detecting this X-ray emission and determining the chemical abundance of the thermal

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