km s$^{-1}$). We note that such an analysis from XRT observations was not possible as continuous observations for individual XRT filters were not available.

We further study the evolution of temperature at the locations of ARTBs as well as along the hot loop that is rooted at the two ARTBs. For this purpose, we performed a DEM analysis by employing the method of on the six coronal channels of AIA namely 94, 131,171, 193, 211, and 335 [Å]{}. Figure \[fig:aia\_dem\] displays the DEM curves obtained at ARTB A (top panel) and B (middle panel), and at the loop-top (bottom panel) during their peak emission. The DEM curves obtained at both foot-points A  and B  show similar features with respect to temperature. The DEM curves also suggest that both the ARTBs as well as the loop-top show multi-thermal emission.

![DEM curves obtained using six AIA coronal passbands at ARTBs A (top panel), B  (middle panel), and loop-top (bottom panel). DEM profiles are fitted with 4 Gaussian functions and polynomial of degree 2.[]{data-label="fig:aia_dem"}](fig9.eps){width="50.00000%"}

![Time evolution of DEM components (top panel) and corresponding temperature (bottom panel) at ARTB A. The Lines are color-coded as same to that of 4 Gaussian components used to 