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Explore the application of gravitational wave standard sirens for cosmological measurements in this lecture from the Summer School on Gravitational-Wave Astronomy. Learn how gravitational wave observations can be used as standard sirens to measure cosmological distances and parameters, providing an independent method for probing the expansion history of the universe. Discover the theoretical foundations of using binary neutron star and black hole mergers as distance indicators, understand the methodology for extracting cosmological information from gravitational wave data, and examine how these measurements complement traditional cosmological probes. Gain insights into the current capabilities and future prospects of gravitational wave cosmography, including its role in addressing fundamental questions about dark energy and the Hubble constant. The lecture covers practical aspects of data analysis, statistical methods for parameter estimation, and the challenges involved in using gravitational wave events for precision cosmology.
