Computer Science – Numerical Analysis
Scientific paper
Jan 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994apj...421l..31a&link_type=abstract
Astrophysical Journal, Part 2 (ISSN 0004-637X), vol. 421, no 1, p. L31-L34
Computer Science
Numerical Analysis
33
Hydrodynamics, Light Emission, Magnetohydrodynamic Turbulence, Numerical Analysis, Particle Acceleration, Perturbation, Radio Emission, Shock Waves, Signatures, Supernovae, Three Dimensional Models, White Dwarf Stars, Deceleration, Emissivity, Magnetic Fields, Space Density, Telescopes, Very Large Array (Vla), Vorticity
Scientific paper
Numerical simulations describing the dynamical and radiative evolution of clumpy supernova ejecta are compared with observations of optical and radio emission knots in supernova remnant (SNR) Cassiopeia A. Three major phases are identified in the evolution of clumpy ejecta: a bow-shock phase, an instability phase, and a dispersal phase. The phenomenological and radiative signatures of each phase are discussed and compared with multi-epoch measurements of small-scale features in Cas A. Good correspondence is found between theory and observations. Both support the premise that compact radio emission features are controlled more by magnetic field amplification triggered in the instability phase than by in situ acceleration of new relativistic particles.
Anderson Martha C.
Jones Thomas W.
Kang Hyesung
Rudnick Lawrence
Tregillis Ian Lee
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