Compact astrophysical sources can generate bright outbursts, which show strong variability on short time-scales. Since outbursts of this kind can be readily observed in high-energy detectors, most observations are in the high-energy regime. High time-resolution observations in the optical allow complementary insights into the processes in these outbursts, however the short duration and unpredictable nature of the outbursts so far has precluded successful high time-resolution observations in the optical.
In this work I present OPTIMA-Burst, an instrument I have developed for optical high time-resolution observations of high-energy transients. I report of the results of several long-duration observation campaigns, and describe the discovery of an unknown class of transient with extremely fast variability of very large amplitude.
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Compact astrophysical sources can generate bright outbursts, which show strong variability on short time-scales. Since outbursts of this kind can be readily observed in high-energy detectors, most observations are in the high-energy regime. High time-resolution observations in the optical allow complementary insights into the processes in these outbursts, however the short duration and unpredictable nature of the outbursts so far has precluded successful high time-resolution observations in the...
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