Season 12 Episode 1 PhD Seminar

Wednesday 5 Feb 2025, 18:15 → 19:30 Europe/Rome

Aula Conversi (VEF) and Zoom

51th meeting of physics PhD seminar series

https://uniroma1.zoom.us/

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https://forms.gle/FAKjaQMUoy3ZwHEY9

18:15 → 18:35 Ringing black holes: the soundtrack of spacetime

When two black holes collide, the system evolves through multiple phases. In the final phase, a new compact object forms and settles into equilibrium through the so-called ringdown, characterized by the emission of gravitational waves. The black hole’s response to a perturbation in this phase is described by exponentially damped sinusoids with discrete frequencies and damping times. These oscillations, known as quasinormal modes (QNMs), arise from black hole perturbation theory. Since the system is non-conservative, these frequencies are complex.

Speaker: Romeo Felice Rosato

Phd_seminars_Rosato.pptx

18:35 → 18:45 Dicussion

18:45 → 19:00 Coffee break

19:00 → 19:20 Mind the Bias: How Selection Effects Shape Our Understanding of the Universe

Selection biases are a fundamental challenge that can skew data and lead to misinterpretations across various disciplines. In this presentation, we explore the historical development of selection bias and examine illustrative examples from various fields, highlighting its pervasive impact. We then focus on the role of Bayesian inference in addressing and correcting for these biases

Speaker: Leonardo Iampieri

PHD Seminar.pdf

PHD Seminar.pptx

19:20 → 19:30 Discussion