CHRONOS Science Program
Yuki Inoue, Mario Juvenal S Onglao III, Vivek Kumar, Daiki Tanabe (on behalf of CHRONOS collaboration)

TL;DR
CHRONOS is a proposed cryogenic, quantum non-demolition gravitational-wave detector targeting sub-Hz frequencies, aiming to enhance detection of astrophysical signals and primordial backgrounds, bridging existing observatories across a broad spectrum.
Contribution
It introduces a novel cryogenic torsion-bar interferometer with quantum non-demolition readout, expanding gravitational-wave detection capabilities into the sub-Hz regime.
Findings
Enables long-duration tracking of binary inspirals before merger
Improves source localization and parameter estimation
Probes stochastic gravitational-wave background and primordial signals
Abstract
Cryogenic sub-Hz cROss torsion-bar detector with quantum NOn-demolition Speed meter(CHRONOS) is a proposed next-generation ground-based gravitational-wave observatory designed to explore the sub-Hz frequency band with unprecedented sensitivity. Utilizing a cryogenic torsion-bar interferometric configuration with quantum non-demolition speed-meter readout, CHRONOS targets a frequency window that bridges space-based missions and current high-frequency ground-based detectors, opening a new frontier in gravitational-wave astronomy. The observatory will enable long-duration tracking of compact binary inspirals well before merger, significantly improving source localization, parameter estimation, and tests of general relativity. In addition to transient signals, CHRONOS is optimized to probe the stochastic gravitational-wave background (SGWB) in the sub-Hz regime, providing powerful…
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Taxonomy
TopicsPulsars and Gravitational Waves Research · Advanced Frequency and Time Standards · Cosmology and Gravitation Theories
