G296.8-0.3: A Mysterious Supernova Remnant in Crux

Details G296.8-0.3: A Mysterious Supernova Remnant in Crux G296.8-0.3: A Mysterious Supernova Remnant in Crux

Oct 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006xmm..prop..148b&link_type=abstract

XMM-Newton Proposal ID #05037801

Physics

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, G296.8-0.3, Xmm-Newton Proposal 05037801

Scientific paper

G296.8-0.3 is an unusual supernova remnant (SNR) in Crux. Radio observations have revealed an intricate multiple-shell structure with sharp radio filaments, and a peculiar strip running across its center. The Spitzer Space Telescope has revealed sharp infrared (IR) filaments at 24 microns matching synchrotron radio filaments. The IR emission is most likely produced by dust immersed within the hot X-ray emitting plasma. Little is known about G296.8-0.3, and the origin of its peculiar morphology remains unexplained. We propose a spatially-resolved X-ray spectroscopy of G296.8-0.3 with the XMM-Newton EPIC camera. We will derive shock speeds, infer densities, pressures, and abundances in the X-ray emitting gas, allowing us to learn about the true nature of this mysterious SNR.

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