With the 1.6m new solar telescope (NST) of Big Bear Solar Observatory, many small-scale jet-like events are detected in the intergranular space surrounding individual granules (e.g., Goode et al. 2010, ApJL, 714, L31; Yurchyshyn et al. 2011, ApJL, 736, L31). These events occur with greater frequency and appear to be directly responsible for heating of the solar atmosphere. However, Observations show that in corona the higher temperature appears in active regions (if no flares, likely in magnetostatic equilibrium) and the hottest zone is located in their cores (Aschwanden et al. 2013, Sol.Phys., 283,5). Therefore, these small-scale eruptions are likely not correlated with the heating of those active regionsf ambient atmosphere. On the other hand, it is well known that oscillations/waves in sunspots (or plages) are global and continuous, thus we believe that the shocks evolved from those waves may provide energy to heat chromosphere and corona. Motivated by this belief, we are going to carry out some coordinated observations with the instruments of NST, Hinode and IRIS to re-check the oscillations in sunspots (plages) in different layers. |
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