ACA Band 7 observations of W28F reveal shocked clumps with nH2 ~ (1-3)×10^5 cm^-3, Tgas ~50-170 K showing density-temperature anti-correlation, pressure balance with hot plasma, E/A-CH3OH ratio >0.9, and CH3OH/SiO spatial-spectral segregation attributed to slow vs fast shocks.
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An ACA map of a molecular cloud interacting with supernova remnant W28
ACA Band 7 observations of W28F reveal shocked clumps with nH2 ~ (1-3)×10^5 cm^-3, Tgas ~50-170 K showing density-temperature anti-correlation, pressure balance with hot plasma, E/A-CH3OH ratio >0.9, and CH3OH/SiO spatial-spectral segregation attributed to slow vs fast shocks.