Two new young galactic supernova remnants

Details Two new young galactic supernova remnants Two new young galactic supernova remnants

Dec 1984

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984natur.312..527g&link_type=abstract

Nature (ISSN 0028-0836), vol. 312, Dec. 6, 1984, p. 527-529.

Astronomy and Astrophysics

Astronomy

39

Milky Way Galaxy, Radio Sources (Astronomy), Stellar Evolution, Supernova Remnants, Astronomical Coordinates, Stellar Spectrophotometry, Very Large Array (Vla)

Scientific paper

Substantial reductions in the distances inferred for the remnants of several 'historical' supernovae, coupled with a galactic supernova rate of 1 every 25 yrs or so, have raised the possibility that many young but distant galactic supernova remnants may be missing from present catalogues. The Very Large Array (VLA) and the Cambridge 5-km telescope have been used to observe 32 small-diameter objects selected from galactic plane radio surveys. These observations reveal both a new young shell remnant (which, at only about 1 arc min in extent, is the smallest angular size galactic remnant yet discovered), and a very peculiar radio source, probably a supernova remnant only a few hundred years old, which is still in the free expansion phase.

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