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arXiv · 1906.03375

Learning Transient Universe in Near-Ultraviolet By Wide-angle Cameras

J. Wang·E. W. Liang·J. Y. Wei
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Abstract

We perform a detailed analysis and simulations on the transient detection capability in the near-ultraviolet (NUV) band by focusing on some major local transient events. These events include the tidal disruption event due to a supermassive blackhole, the shock breakout of a core-collapse supernova and the flare of a late-type star. Our simulations show that a set of small wide-angle NUV cameras can allow us to detect and study numerous galactic and extra-galactic transient events. Based on the analysis and simulations, here we propose a space-based NUV sky patrol mission by updating the proposal that was originally submitted to the Chinese Space Station mission in 2011. The mission proposed here is composed of a set of eight small wide-field NUV cameras each with a diameter of 20cm. The total sky area simultaneously covered by the NUV cameras is as large as 3000$\mathrm{deg^2}$. The survey cadence ranges from 30 to 300s. The transient events are required to be detected by a dedicated on-board software in real time.

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J. Wang, E. W. Liang, J. Y. Wei. 2019-06-08. Learning Transient Universe in Near-Ultraviolet By Wide-angle Cameras. https://doi.org/10.1088/1538-3873%2Fab2749

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