Abstract We present optical photometry of six intermediate polars that exhibit transitions to a low-flux state. For four these systems, DW Cnc, V515 And, V1223 Sgr, and RX J2133.7+5107, we are able perform timing analysis in out the low states. find that, for Cnc dominant periodicities light curves change as flux decreases, indicating sources’ accretion properties they transition variability is...

Narrow-band radio spikes have been recorded during a solar flare with unprecedented resolution. This unique example allows us to study the effect of low resolution in previously published peak-flux distributions of radio spikes. We give a general, analytical expression for how an actual peak-flux distribution is changed in shape if the peaks are determined with low temporal and/or frequency res...