Timing properties of the X-ray accreting pulsar 1A 0535+262 studied with Insight-HXMT
Another paper on observations of 1A~0535+262 with Insight-HXMT in 2020. This time we looked at evolution of the pulse profiles:
The observed changes indeed seem to confirm our previous spectra-based suggestion that the source did transition to super-critical state in this outburst!