Season 10 Episode 3 PhD Seminar

Wednesday 22 May 2024, 18:15 → 19:15 Europe/Rome

Aula Conversi (VEF) and Zoom

46rd meeting of physics PhD seminar series

https://uniroma1.zoom.us/

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https://groups.google.com/u/1/a/uniroma1.it/g/phd-seminars

You can submit abstracts using the following link:

https://forms.gle/FAKjaQMUoy3ZwHEY9

18:15 → 18:35 Cosmology with dark sirens gravitational waves and galaxy catalogs: attempting to solve the Hubble constant tension

The rate of the universe's expansion, known as the Hubble constant, remains debated. Gravitational wave standard sirens offer an independent measurement method, using signals from events like binary neutron star mergers that encode distance and redshift information from their electromagnetic (EM) counterparts. The initial measurement from GW170817 showed promise, but more data is needed for accuracy. My work focuses on the dark sirens method, using gravitational wave events without EM counterparts to refine the Hubble constant. This approach estimates potential host galaxy redshift using galaxy catalogs. With increased observations and improved techniques, we aim to reduce systematic errors and achieve precise measurements.

Speaker: Sarah Ferraiuolo

PhD_seminar.pdf

18:35 → 18:45 Dicussion

18:45 → 19:05 How to find a positron

Have you ever wondered how particle physicists know which particles are flying around their experiments? Well in this talk I'll walk you through the process, from the detector design to the software used to reconstruct physical quantities.

Speaker: Elizabeth Sarah Long

2024PhDSeminarsVetoReconstruction.pdf

19:05 → 19:15 Discussion