A remark on the evolution of radio sources associated with supernova remnants

Details A remark on the evolution of radio sources associated with supernova remnants A remark on the evolution of radio sources associated with supernova remnants

May 1976

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pazh....2..244s&link_type=abstract

Pis'ma v Astronomicheskii Zhurnal, vol. 2, May 1976, p. 244-247. In Russian.

Astronomy and Astrophysics

Astronomy

2

Radio Sources (Astronomy), Stellar Evolution, Supernova Remnants, Energy Conservation, Magnetic Fields, Relativistic Particles, Stellar Envelopes

Scientific paper

A hypothesis is put forward and justified that the total energy of relativistic particles and magnetic fields generated during the 'convective' stage of the evolution of shells expelled in the explosions is conserved during the expansion of supernova remnants. This assumption easily explains the observed dependence of the mean surface radio brightness of a source on the inverse fourth power of its linear diameter. The evolution of the radio spectrum of Cassiopeia A is explained by a continuous generation of relativistic particles in the convective zone of this remnant.

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