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

Journal Article · Sat Jul 01 04:00:00 EDT 1989 · Astrophysical Journal, Supplement Series; (USA)

DOI:https://doi.org/10.1086/191347· OSTI ID:5557159

Dickel, J R; Eilek, J A; Jones, E M; Reynolds, S P ^[1]

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1. Illinois Univ., Urbana (USA)

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. 77 refs.

• OSTI ID: 5557159
• Journal Information: Astrophysical Journal, Supplement Series; (USA), Journal Name: Astrophysical Journal, Supplement Series; (USA) Vol. 70; ISSN APJSA; ISSN 0067-0049
• Country of Publication: United States
• Language: English

Related Subjects

640102* -- Astrophysics & Cosmology-- Stars & Quasi-Stellar
Radio & X-Ray Sources
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ACCELERATION
BEAMS
COMPUTER CODES
COMPUTERIZED SIMULATION
COSMIC RADIO SOURCES
ELECTROMAGNETIC RADIATION
ELECTRON BEAMS
ENERGY RANGE
EXPANSION
FLUID MECHANICS
HYDRODYNAMICS
INSTABILITY
LEPTON BEAMS
LUMINOSITY
MAGNETIC FIELDS
MECHANICS
NEBULAE
OPTICAL PROPERTIES
PARTICLE BEAMS
PHYSICAL PROPERTIES
RADIATIONS
RADIOWAVE RADIATION
RAYLEIGH-TAYLOR INSTABILITY
RELATIVISTIC RANGE
SHOCK WAVES
SIMULATION
STAR EVOLUTION
SUPERNOVA REMNANTS
WAVE PROPAGATION