Echoes of Galactic Supernovae
نویسنده
چکیده
Light echoes from ancient supernova offer a unique and powerful opportunity to study supernovae and their relationships to supernova remnants (SNRs), as well as interstellar dust and Galactic structure. The use of this relatively simple phenomenon of light echoes in such studies is just now developing into an exciting new field of study. This is one of the very rare occasions in astronomy that the cause and effect of the same astronomical event can be observed, in that we can study the physics of the SNR as it appears now and also the physics of the explosion that produced it hundreds of years ago.
منابع مشابه
Scattered-light Echoes from the Historical Galactic Supernovae Cassiopeia a and Tycho
We report the discovery of an extensive system of scattered light echo arclets associated with the recent supernovae in the local neighbourhood of the Milky Way: Tycho (SN 1572) and Cassiopeia A. Existing work suggests that the Tycho SN was a thermonuclear explosion while the Cas A supernova was a core collapse explosion. Precise classifications according to modern nomenclature require spectra ...
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