OT060420 and the Systematic Automated All-sky Search for Bright Optical Transients

Astronomy and Astrophysics – Astronomy

Scientific paper

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Scientific paper

Real-time detection of bright optical transients has an important role in modern astronomy, and many robotic telescopes have been built and operated for this purpose. However, since traditional narrow-angle telescopes cover only a very small portion of the sky at a given time, one can reasonably assume that some bright short-timescale transients may not be recorded by the available narrow-angle sky surveys.
In this study we applied a systematic all-sky automated search for bright short-timescale optical transients. The search used two panoramic all-sky cameras located in the northern and southern hemispheres, and could automatically alert on optical transients brighter than 5.5th magnitude that lasted for 12 minutes or more.
After three years of operation, we recorded a seemingly 5th magnitude optical transient detected for approximately 12 minutes by two CONCAM all-sky cameras located in Cerro Pachon -Chile and La Palma -Spain.
The data were also used to deduce upper limits to the frequency of short-timescale bright transient events.

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