Astronomy and Astrophysics – Astronomy
Scientific paper
Jun 1976
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1976pazh....2..299a&link_type=abstract
Pis'ma v Astronomicheskii Zhurnal, vol. 2, June 1976, p. 299-302. In Russian.
Astronomy and Astrophysics
Astronomy
Novae, Radio Sources (Astronomy), Cosmic Rays, Field Strength, Galactic Radiation, Magnetic Fields, Particle Energy, Relativistic Particles, Spectral Energy Distribution
Scientific paper
A search for radio emission from Nova Cygni 1975 was conducted at a frequency of 989 MHz from September 9 to 22, 1975. A radio burst was detected whose maximum was observed 15 days after the visible-light maximum and lasted for about 3 days. It is shown that the temporal variation of the radio flux can be explained in terms of Shklovsky's (1960) model of a variable radio source in which synchrotron radio emission originates in a homogeneous and isotropic cloud of relativistic electrons expanding with a constant velocity. The magnetic-field intensity is estimated to be about 0.9 oersted, and a spectral index of approximately unity is determined for the energy distribution of the emitting relativistic particles. The role of novae as sources of galactic cosmic rays is evaluated.
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