Measuring Speed of Gravity and Dispersion using GW370817 in Cosmic Explorer
APA
(2025). Measuring Speed of Gravity and Dispersion using GW370817 in Cosmic Explorer. SciVideos. https://youtu.be/3SfnujDTfZM
MLA
Measuring Speed of Gravity and Dispersion using GW370817 in Cosmic Explorer. SciVideos, Jan. 06, 2025, https://youtu.be/3SfnujDTfZM
BibTex
@misc{ scivideos_ICTS:30663,
doi = {},
url = {https://youtu.be/3SfnujDTfZM},
author = {},
keywords = {},
language = {en},
title = {Measuring Speed of Gravity and Dispersion using GW370817 in Cosmic Explorer},
publisher = {},
year = {2025},
month = {jan},
note = {ICTS:30663 see, \url{https://scivideos.org/index.php/icts-tifr/30663}}
}
Abstract
Compact binary sources detected during the present observing run would last around a few hours in the band of next-generation ground-based gravitational wave detectors. This source observed from an Earth-centered and Earth-rotating frame, will move on the sky. In this talk, we’ll describe a way to use this apparent motion on the sky to measure the speed of gravity and test a wide array of beyond-standard model theories using a phenomenological dispersion relation. We do a full Bayesian parameter estimation on a typical GW170817-like system with higher modes (which should be detectable in future detectors) to measure the speed of gravity and the dispersion relation. I shall also describe how we do this run in a reasonable timeframe and the constraints that we get using one source with signal-to-noise around 1000 and one 40km Cosmic Explorer. The methods developed are fully general and can be used easily for both multiple detectors and detections.