Radio emission from young supernova remnants - Effects of an inhomogeneous circumstellar medium

Details Radio emission from young supernova remnants - Effects of an inhomogeneous circumstellar medium Radio emission from young supernova remnants - Effects of an inhomogeneous circumstellar medium

Jul 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989apjs...70..497d&link_type=abstract

Astrophysical Journal Supplement Series (ISSN 0067-0049), vol. 70, July 1989, p. 497-538. Research supported by Los Alamos Natio

Astronomy and Astrophysics

Astrophysics

37

Nebulae, Radio Emission, Shock Wave Propagation, Stellar Envelopes, Supernova Remnants, Taylor Instability, Hydrodynamic Equations, Particle Acceleration, Relativistic Electron Beams, Stellar Luminosity, Stellar Magnetic Fields

Scientific paper

The evolution of young supernova remnants has been modeled using a one-dimensional hydrodynamics code. Rayleigh-Taylor instabilities and the growth of Rayleigh-Taylor fingers have been included in the code. Turbulent dynamo amplification of magnetic fields and both turbulent and shock acceleration of relativistic electrons have been included macroscopically. From this, the distribution of synchrotron luminosity in the remnant has been calculated. It is found that the radio morphology of model remnants expanding into a homogeneous medium does not agree with observations. Expansion into a circumstellar medium with many small cloudlets does produce radio shells which agree with observations. It is suggested that supernova remnants reflect the interaction of ejected matter with a cloudy circumstellar medium.

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