A Survey for Ancient Supernova Light Echoes in the Milky Way Galaxy

Details A Survey for Ancient Supernova Light Echoes in the Milky Way Galaxy A Survey for Ancient Supernova Light Echoes in the Milky Way Galaxy

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aas...20915010r&link_type=abstract

2007 AAS/AAPT Joint Meeting, American Astronomical Society Meeting 209, #150.10; Bulletin of the American Astronomical Society,

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Scientific paper

The SuperMACHO collaboration has discovered echoes from four ancient supernovae (SNe) in the Large Magellanic Cloud using difference image analysis (Rest et. al, 2005). These newly-discovered echoes are as old as the historical SNe in our Galaxy observed by Kepler, Tycho, and others. The surface brightness from the Type Ia SNe should be roughly the same as the LMC echoes, assuming a similar geometry and similar dust filaments. Scaling from the LMC data, we would expect the echoes of these historical lightechoes to be roughly 4-6 degree from their SNRs, move at 30"yr^-1, and be about 30" wide. We report on our progress in locating similar light echoes in the SMC and near historical Milky Way supernovae (Kepler, Tycho, 1181, Crab, 1006).

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