All articles tagged with #stochastic siren
Scientists propose using the stochastic gravitational-wave background—the faint, background hum from countless distant mergers—to measure the Hubble constant, offering an independent, multi‑messenger approach that could help resolve the long‑standing Hubble tension as gravitational‑wave detectors grow more sensitive.
Researchers from the University of Illinois and University of Chicago propose the stochastic-siren method, using the gravitational-wave background from countless distant black-hole mergers to infer the Hubble constant. This independent approach can tighten expansion-rate measurements, rule out very slow cosmic expansion with current data, and become more powerful as gravitational-wave detectors improve and the background is detected, potentially helping resolve the Hubble tension.