Particle acceleration and Tycho's supernova remnant

Astronomy and Astrophysics – Astronomy

Scientific paper

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Particle Acceleration, Supernova Remnants, Boundary Value Problems, Flow Equations, Radio Astronomy, Shock Waves, Two Fluid Models, X Ray Astronomy

Scientific paper

Particle acceleration in shock waves may be very efficient at converting bulk kinetic energy into energy density in high-energy particles. The author investigates the implications for the dynamics and evolution of a Sedov-type blast wave, with particular reference to determining the energy of the supernova event associated with Tycho's supernova remnant. He finds that X-ray and radio observations favour a low efficiency of conversion of kinetic energy to high-energy particles, a supernova explosion energy of about 8×1043J, and an ambient density of about 4 atom cm-3.

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