[astroseminar at Sapienza] 12/04/2019 at 16:00: Pau Amaro Seoane ( Amaldi Research Center seminar)

[Elia Battistelli]

AMALDI RESEARCH CENTER SEMINAR

Title: Mapping spacetime around supermassive black holes with 
gravitational waves
Speaker: Pau Amaro Seoane
Institution: IEEC Institute of Space Studies of Catalonia
Date: Friday, 12 April 2019
Time: 4:00pm
Location: Aula Conversi, Marconi Building, Dept. of Physics, Sapienza 
University

Abstract:
The era of gravitational wave astronomy has arrived. We can now not 
just observe the universe, but listen to it with Gravitational Waves. 
When a compact object ventures too close a supermassive black hole, it 
is captured because of the emission of gravitational waves, to be 
eventually swallowed whole when it crosses the event horizon. When doing 
so, it radiates energy which can be thought of as a snapshot containing 
detailed information about spacetime and all the physical parameters of 
the system with ridiculous errors. The process represents a mapping of 
warped spacetime, a unique probe of gravity in the strong regime. Thanks 
to these captures, we are able to address fundamental questions: Do 
black holes exist, how do they win their colossal mass through their 
cosmic history, and what is the nature of their event horizon?

web: https://agenda.infn.it/event/17131/