| Friday 9 May 2025 | |
| Events for day: Wednesday 27 December 2023 |
| 13:30 - 15:00 Weekly Seminar Impact of AGN feedback on the dynamics of gas School ASTRONOMY Through hydrodynamic simulations, we examined the interstellar medium (ISM) within the circumnuclear disk (CND) of an AGN-dominated galaxy, with a specific focus on a Seyfert-2 type galaxy akin to NGC 1068. By incorporating mechanical feedback from the AGN and utilizing the CHIMES non-equilibrium chemistry network, we compared models with and without AGN feedback. Our results indicate that the presence of an AGN intensifies CO formation in dense, clumpy regions surrounding supermassive black holes (SMBHs). Our analysis suggests that the consistency of the disk's position angle across various CND radii can be attributed to mechanical AGN feedb ... 14:00 - 15:00 Combinatorics and Computing Weekly Seminar Remarks on the Almost Eventown Problem School MATHEMATICS We call a collection of subsets of an n-element set an almost eventown, if out of any three of the subsets at least two share an even number of elements. In joint work with Giorgis Petridis, we showed sharp bounds on the maximum size of almost eventowns for sufficiently large n. In this talk, I will discuss a slight refinement of the previous results based on a different method. https://us06web.zoom.us/j/83407340293?pwd=cXarB4geUkQrP9MMwe8Z71K94wYPpT.1 Meeting ID : 834 0734 0293 Passcode : 362880 Lecture Hall 1 Venue: Niavaran, Lecture Hall 1 ... 14:00 - 15:00 Weekly Seminar Fluctuations as a probe of entanglement School QUANTUM PHYSICS AND MATTER Entanglement is one of the key features of the quantum world, which, over the past decades, has been promoted to a unifying concept in exploring diverse phenomena ranging from black hole physics to condensed matter systems. Particularly, understanding entanglement and its dynamics has laid modern foundations for manybody physics. Unfortunately, directly probing entanglement in experiments requires very delicate, system-dependent tools whose complexity grows exponentially with system size. We argue that in systems with conservation laws, fluctuations of conserved extensive quantum observables provide an alternative route to probe entanglement ... 16:00 - 17:00 Mathematics Colloquium Limit structures in model theory School MATHEMATICS In this talk I will discuss two important model-theoretic constructions, namely ultra-product and Fraisse-Hrushovski constructions and overview some of their applications in various fields of mathematics. Subscribing the Mathematics Colloquium mailing list: https://groups.google.com/g/ipm-math-colloquium Venue: Niavaran, Lecture Hall 1 ... |