Time evolution of 2D model which is heated for 1 s at position x = 7 Mm, z = 6.3 Mm with 50 J/m³ over a region spanning 100 × 100 km². The panels show the temperature at t = 0.6 s (top) when the maximum temperature is 2.25 MK, at t = 1.8 s (middle) when the maximum temperature is 1.63 MK, and at t = 10 s (bottom) where the maximum temperature is 1.16 MK. The temperature increases rapidly in the heated region, reaching 2.4 MK at 1 s, and plasma is heated by thermal conduction along the field as the plasma cools. Note that the upper boundary is set to have zero temperature gradient, so the entire atmosphere cools as well. Magnetic field lines are indicated with thin grey contours and contours of constant β are shown with white numbered lines.