Zch » ZAR ( kBC/ k AR)
The preceding shows the general approach in obtaining cavity parameters for model testing. With sufficient data resolution and discrimination available for other coronal loops, of the type that was available for loop BC in AR 2776, we should be able to obtain a much better idea of how well this cavity resonator model works and whether it can be suitably generalized.
The reader should be aware of why the period found here (» 69 s) differs from that estimated in the June 22 post (» 52 s). In particular, note the latter assumed global kink mode oscillations for a total loop length L = 9.3 x 10 9 cm
 .Zugzda and Locans, op. cit.