A new look at the birthrate of supernova remnants

Details A new look at the birthrate of supernova remnants A new look at the birthrate of supernova remnants

Sep 1982

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1982japa....3..351s&link_type=abstract

Journal of Astrophysics and Astronomy, vol. 3, Sept. 1982, p. 351-361.

Astronomy and Astrophysics

Astrophysics

11

Pulsars, Stellar Evolution, Supernova Remnants, Interstellar Matter, Milky Way Galaxy, Neutron Stars, Stellar Envelopes, Stellar Luminosity, Stellar Magnetic Fields

Scientific paper

A homogeneous catalog of shell-type supernova remnants is reanalyzed, and the radio data are found to be consistent with a birthrate of one in 22 + or - 3 yr. The approach is based on the secular decrease of surface brightness of the historical remnants whose ages are precisely known. The above-mentioned birthrate is significantly higher than most previous estimates which range from one in 50-150 yr, and is consistent with the supernova rate in our Galaxy derived from historical observations, as well as with recent estimates of the pulsar birthrate.

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