Observation of the ejecta in the Cygnus Loop

Details Observation of the ejecta in the Cygnus Loop Observation of the ejecta in the Cygnus Loop

Oct 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005xmm..prop..204t&link_type=abstract

XMM-Newton Proposal ID #04054901

Physics

Supernovae, Supernova Remnants, Diffuse (Galactic) Emission And Isolated Neutron Stars, Cygnus Loop, Xmm-Newton Proposal 04054901

Scientific paper

Although the Cygnus Loop is a middle-aged SNR, it contains fresh ejecta in its center. Since the ejecta are higher temperature than that of the swept-up ISM, we can clearly detect Fe-L, Mg, Si, S emission lines from ejecta. However the ejecta are surrounded by the swept-up ISM, which makes us difficult to study the emission from O and N in the ejecta where the emission from the shell dominates. There is a blow-up region in the south of the Cygnus Loop where, we expect, the ejecta are spew out from the shell. There is no surrounding swept up matter. Due to its proximity, there is very little interstellar absorption feature. We propose to observe the south blow-up region to investigate the ejecta without obstacle.

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