What mechanism is responsible for the powerful Radio Emission often detected from SNRs?
Answer
Synchrotron radiation created when high-energy electrons spiral around magnetic field lines within the shocked gas.
Radio emission is a key observational signature, typically attributed to the synchrotron process. This powerful radiation arises when high-energy, relativistic electrons are accelerated and forced to spiral around existing magnetic field lines within the regions affected by the shock wave. This process is highly efficient in environments where the forward shock is strongly accelerating particles, placing the remnant firmly within the dynamic Sedov phase. Radio surveys are therefore excellent tools for mapping the overall large-scale structure, often clearly revealing the shell shape.
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