Speaker
Description
Lobster Eye Imager for Astronomy (LEIA) is a pathfinder of the wide-field X-ray telescope of the Einstein Probe (EP) mission. The piggyback imager, launched in 2022 July, has a mostly unvignetted field of view of 18°. 6 × 18°.6. Its spatial resolution is in the range of 4–7 arcmin in FWHM and the focal spot effective area is 2–3 square centimeter, both showing only mild fluctuations across the field of view. LEIA has started its regular scientific surveys since Nov. 2022, and has finished its first all sky survey. In this talk, we report on the results from its all sky survey. By now LEIA has detected more than 300 sources, of which more than 60 show high variabilities (more than a factor of 10). These sources have been carefully identified following a series of cross-matches with astronomical data bases and multiwavelength catalogues. It has also caught several fast X-ray transients, including GRB 230307A and two novae.
