The Critical Role of LIGO-India in the Era of Next-Generation Observatories
Shiksha Pandey, Ish Gupta, Koustav Chandra, Bangalore S. Sathyaprakash

TL;DR
This paper evaluates the importance of LIGO-India in enhancing multi-messenger astronomy with next-generation gravitational wave detectors, showing it can achieve comparable performance to larger detectors despite shorter arms.
Contribution
It demonstrates that LIGO-India's shorter arms can be offset by increased baseline, maintaining high localization accuracy and early warning capabilities in future gravitational wave networks.
Findings
LIGO-India enables precise localization of over 10,000 binary neutron star mergers annually.
Replacing a 20 km Cosmic Explorer with LIGO-India yields similar performance in localization.
Networks including LIGO-India provide early warnings up to 10 minutes before merger.
Abstract
We examine the role of LIGO-India in facilitating multi-messenger astronomy in the era of next generation observatories. A network with two L-shaped Cosmic Explorer (CE) detectors and one triangular Einstein Telescope (ET) would precisely localize nearly the entire annual binary neutron star merger population up to a redshift of 0.5--over 10,000 events would be localized within , including approximately 150 events within . Luminosity distance would be measured to within 10% for over 9,000 events and within 1% for events. Surprisingly, replacing the 20 km CE detector with LIGO-India operating at A sensitivity (I) yields nearly identical performance. The factor-of-five shorter arms are offset by a fourfold increase in baseline relative to a second CE in the U.S., preserving localization accuracy, with over 9,000 events…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsAstronomical Observations and Instrumentation · Superconducting Materials and Applications · Pulsars and Gravitational Waves Research
