Observing the X-ray light echo from the giant flare of Cas A's point source

Details Observing the X-ray light echo from the giant flare of Cas A's point source Observing the X-ray light echo from the giant flare of Cas A's point source

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop....8v&link_type=abstract

XMM-Newton Proposal ID #04002101

Physics

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Cas A Northern, Xmm-Newton Proposal 04002101

Scientific paper

One of the most interesting discoveries of the Spitzer telescope is the existence of a dust clouds near the supernova remnant Cas A that appear to move with a velocity close to the speed of light. The likely explanation is that these dust clouds are not moving, but that a very luminous light flash is briefly lighting up high density dust clouds. The probable origin of the light flash is a giant flare from the central point source of Cas A, similar to flare from soft gamma ray repeaters. We propose to obtain X-ray images of the dust clouds to look for Fe-K fluorescence emission at 6.4~keV, which would establish that the origin of the infrared emission is indeed a bright X-ray flare. This in turn would establish that the point source is a magnetar.

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