What mechanism is responsible for the distinctive, broad-spectrum radio emission from SNRs?
Answer
Synchrotron radiation
Radio emission arises when high-speed electrons spiral around magnetic field lines amplified by the shock front, generating synchrotron radiation, which is a non-thermal process.

Related Questions
What powers the initial, prolonged optical glow of a supernova remnant for months to years?What element does Nickel-56 ($^{56} ext{Ni}$) primarily decay into?What physical process primarily generates the X-ray emission observed in supernova remnants?What mechanism is responsible for the distinctive, broad-spectrum radio emission from SNRs?Charged particles accelerated to extremely high energies within SNRs are known as what?What is the believed mechanism for accelerating particles within SNRs to generate cosmic rays?How is the amount of synthesized Nickel-56 ($^{56} ext{Ni}$) related to the supernova observation?What material generates the hot gas responsible for the long-lasting thermal X-ray emission?As a remnant ages, which emission phase eventually dwarfs the initial signal driven by radioactive decay?What specific characteristic derived from the X-ray spectrum informs astronomers about the shock wave?