Main Objective: ALMA-Hinode-IRIS coordination on an active region for estimating the amount of the energy released by each of small reconnection events
Scientific Justification: Reconnection events in nanoflare energy range are a candidate for the heating of the corona in active regions. The number distribution of reconnection events as a function of energy is essential to evaluate the importance of nanoflares in the heating. ALMA observations would provide a new capability for newly exploring the released energy of reconnection events in the energy range around 10^(23)-10^(24) ergs. Transient heating of the plasma at the upper chromosphere, caused by reconnection events, should be observed as the transient increase in brightness temperature. The time series of the ALMA measurements, coordinated with Hinode and IRIS observations, are investigated to establish a new method for estimating the amount of the energy released by each of small reconnection events. Hinode and IRIS observations provide a counterpart of the energy release behaviors in the corona as well as in the chromosphere and would be helpful in the energy estimation. Repeated series of SP maps are used to investigate the magnetic origin at the photosphere for reconnection events. |
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