| Thursday 26 December 2024 | |
| Events for day: Wednesday 19 July 2023 |
| 13:30 - 15:00 Weekly Seminar COSMOS-Web Survey:Detecting Cosmic Dawn Galaxies with the James Webb Space Telescope School ASTRONOMY I will present an overview of my studies on evolution of the central brightest group galaxies. I will also present COSMOS-Web survey and its significance in detecting and studying galaxies during cosmic dawn using the James Webb Space Telescope (JWST). Cosmic dawn, the epoch when the first stars and galaxies illuminated the early universe, holds crucial insights into its origins. The JWST, equipped with advanced instruments like NIRCam and MIRI, offers unprecedented capabilities to observe cosmic dawn galaxies. COSMOS-Web aims to map the earliest structures of the universe and will conduct a comprehensive survey of up to 1 million galaxies. ... 15:30 - 17:00 Geometry and Topology Weekly Seminar Pleijel Nodal Domain Theorem for the Robin Eigenvalue Problem School MATHEMATICS A nodal domain refers to a connected region where the eigenfunction is nonzero. The simplest topological invariant of nodal domains is the nodal count. The celebrated Pleijel nodal domain theorem gives an upper bound on the asymptotic behaviour of the nodal count of the Laplace eigenfunctions with Dirichlet boundary condition. There have been advancements in this direction including its extension to the Neumann problem and more generally to the Robin problem with a non-negative parameter as well as improvements of the Pleijel upper bound for the Dirichlet problem. In this talk, we discuss an implication of these results. In particular, we foc ... |