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The Low-Frequency Array (LOFAR) is a pan-European radio telescope with immense data collection and processing capabilities, making it an unprecedented and powerful instrument for conducting the deepest and widest radio surveys at the lowest frequencies accessible from the ground. Over recent years, we have addressed key issues related to the analysis and calibration of radio data, allowing us to now produce thermal noise-limited maps at low frequencies. Coupled with the excellent imaging from the Euclid space telescope, these maps enable studies across a broad range of scientific topics, including (i) shocks in merging clusters, (ii) radio feedback processes, (iii) star formation in distant galaxies, and (iv) the most distant radio AGN, near the epoch of reionisation. In this talk, I will first discuss solutions to the main technical challenges. Subsequently, I will present scientific highlights related to these four topics.

BIO

Prof.Huub Röttgering,Director of Leiden Observatory.Röttgering's main interest is the origin and evolution of active and star-forming galaxies, clusters of galaxies and large-scale structures in the Universe.He carried out numerous projects based on radio, mm-submm, optical, IR and X-ray observations taken with ground- and space-based observing facilities. His second interest is the development of astronomical observing facilities.Rottgering has a considerable interest indeveloping interferometric techniques. As PI of the project the Development and Commissioning of LOFAR for astronomy (DCLA) and as first chair of LOFAR's Astronomy Research Committee (ARC), Rottgering has been playing a leading role in the development of LOFAR. He is also involved in the development of ground and space based optical and infrared interferometers (MIDI on the VLT interferometer, and ESA's Darwin and NASA's TPF space interferometers).

Host: Zheng Cai