Krzysztof Nalewajko (CAMK, Warsaw)
I will present the results of extremely precise astrometric near-infrared observations of the Galactic Center, including the massive black hole Sgr A* and a nearby star S2 around its pericenter passage in May 2018, with the GRAVITY instrument on the ESO Very Large Telescope Interferometer. These results have been presented in the following publications: https://arxiv.org/abs/1807.09409 , https://arxiv.org/abs/1810.12641 , https://arxiv.org/abs/1902.04193 , https://arxiv.org/abs/1904.05721 , https://arxiv.org/abs/2002.08374
Morgane Fortin (CAMK, Warsaw)
The speaker will update us on the newest discoveries about FGRBs. The talk will be delivered in the seminar room and will be based on: "Periodic activity from a fast radio burst source" by the CHIME/FRB Collaboration https://arxiv.org/pdf/2001.10275.pdf
