eROSITA is the primary instrument onboard the Russian-German "Spectrum-Roentgen-Gamma" (SRG) mission which was successfully launched from Baikonur on July 13, 2019. It will perform the first imaging all-sky survey in the energy range up to 10 keV with an unprecedented spectral and angular resolution. eRosita is expected to be 25 times more sensitive than the pioneering ROSAT mission of the 1990s and is expected to detect 100,000 galaxy clusters, 3 million active galactic nuclei and 700,000 stars in the Milky Way. A large number of new detections will open a new era of X-ray astronomy, especially bringing us into the field of population studies. The survey will provide new insights into a wide range of astrophysical phenomena, including AGNs, galaxy clusters, accreting binaries, active stars and diffuse emission within the Galaxy, as well as solar system bodies. In this talk, I will give a very brief introduction on the instrument, the observational mode, scientific goals and recent highlights of SRG/eRosita.

Long Ji obtained his PhD degree in astrophysics from Institute of High Energy Physics, CAS in 2016. Since then, he has been working at Eberhard Karls University of Tübingen, Germany. Most of his researches focus on the observations of compact objects (i.e., black holes or neutron stars) in low/high mass X-ray binaries, and Gamma-ray binaries.