Spatial variation of the temperature. Contours a till b show the gradual increase of temperature for −3.3 ≤ x ≤ 3.3, −3.2 ≤ x ≤ 3.2 (a at t = 0.6 s, b at t = 1.14 s, c at t = 1.3 s and d at t = 3.52 s). The significant increase in plasma temperature is shown in the last two plots respectively at t = 6.02 s for −2.7 ≤ x ≤ 2.7, −2.6 ≤ x ≤ 2.6 and t = 7.6 s for −1.5 ≤ x ≤ 1.5, −1.5 ≤ x ≤ 1.5. This increase due to the propagation of magneto-acoustic waves and their interaction with the magnetic configuration. The black lines in the lower figure denote magnetic field lines.