This course aims to teach learners about using gravitational wave signals from compact mergers to measure cosmological parameters, particularly focusing on the Hubble constant tension. The course covers topics such as cosmology with standard sirens, Bayesian approach, GW selection effects, handling incomplete galaxy catalogues, and measuring the Hubble constant with real data. The teaching method includes lectures and examples, and the intended audience is individuals interested in cosmology, gravitational wave astronomy, and parameter estimation.
Cosmology with Dark Sirens - Attempting to Solve the Hubble Constant Tension
Institute for Pure & Applied Mathematics (IPAM) via YouTube
Overview
Syllabus
Intro
Outline
Why use gravitational waves for cosmology?
Cosmology with standard sirens
A Bayesian approach
GW selection effects
An example with 250 (mock) binary neutron stara
What if the host galaxy is not in the catalogue?
The impact of incompleteness
Measuring the Hubble constant with real data
Probability that the host galaxy is in the catalogu
The problem with real galaxy catalogues
Pixelating the analysis
Impact of pixelation on a single event
How much does pixelation improve things?
What is the mass distribution of the BBH popu.
Correlation between population and cosmolog. parameters
Cosmology results from GWTC-3
Taught by
Institute for Pure & Applied Mathematics (IPAM)
