Which component of the SNR structure is the leading edge where the blast wave is currently creating the highest temperatures?
Answer
The Forward Shock
The Forward Shock is the leading edge of the blast wave where it smashes into the surrounding ISM, creating the highest temperatures measured in millions of Kelvin.

Related Questions
What temperature range do gases immediately behind powerful supernova shock fronts routinely exceed?What physical process converts kinetic energy into the extreme thermal heat observed in a supernova remnant?What state of matter results when electrons are violently stripped from atomic nuclei due to the immense thermal energy in an SNR?Due to material being heated to millions of degrees, what type of high-energy electromagnetic radiation do SNRs predominantly emit?Which component of the SNR structure is the leading edge where the blast wave is currently creating the highest temperatures?What is the primary consequence of the heating and cooling cycle of SNR material regarding galactic chemistry?What observation tool allows astronomers to map the temperature distribution within a supernova remnant?How long can supernova remnants exist as transient structures at high temperatures before dissipating?What causes the extreme thermal signature of an SNR to subside over time during its evolution?What specific structure involves a weaker shock propagating backward into the material originally expelled by the star?