Modulation depth of the gyrosynchotron emission as identifier of fundamental sausage modes

We study the intensity, modulation depth and mean of gyrosynchrotron (GS) radiation as a function frequency line sight (LOS) in fast sausage modes. By solving 2.5D MHD ideal equations straight coronal loop considering chromosphere with typical flaring plasma parameters we analyse wavelet transform density GS emission for different radio frequencies spatial resolutions, given impulsive general perturbations energies microflare range. A analysis performed over showed that fundamental mode 7s first harmonic 3s developed, all initial energy used. For both high resolution (central pixel integration) low (entire integration), larger frequency, depth. However, integrations differ that, LOS angle respect to axis, results smaller depth, respectively. Fast modes triggered by instantaneous depositions order are able reproduce deep intensity depths observed solar events. As trends obtained Reznikova, Antolin, Van Doorsselaere (2014), linear forced oscillation, remain present when analysing more context, where is impulsive, nonlinear perturbation, it seems behaviour found can be used observational identifiers presence other quasi-periodic pulsation features. It inferred from this finite-amplitude have potential generate depths.