LIGO Document P1300187-v25
- We anticipate the first direct detections of gravitational waves (GWs) with Advanced LIGO and Virgo later this decade. Though this groundbreaking technical achievement will be its own reward, a still greater prize could be observations of compact binary mergers in both gravitational and electromagnetic channels simultaneously. During Advanced LIGO and Virgo's first two years of operation, 2015 through 2016, we expect the global GW detector array to improve in sensitivity and livetime and expand from two to three detectors. We model the detection rate and the sky localization accuracy for binary neutron star (BNS) mergers across this transition. We have analyzed a large, astrophysically motivated source population using real-time detection and sky localization codes and higher-latency parameter estimation codes that have been expressly built for operation in the Advanced LIGO/Virgo era. We show that for most BNS events the rapid sky localization, available about a minute after a detection, is as accurate as the full parameter estimation. We demonstrate that Advanced Virgo will play an important role in sky localization, even though it is anticipated to come online with only one-third as much sensitivity as the Advanced LIGO detectors. We find that the median 90% confidence region shrinks from ~500 square degrees in 2015 to ~200 square degrees in 2016. A few distinct scenarios for the first LIGO/Virgo detections emerge from our simulations.
- Other Files:
- All simulated BNS signals, including those that are not detected, for 2015 scenario (2015_all_inj.txt, 4.5 MB)
- All simulated BNS signals, including those that are not detected, for 2016 scenario (2016_all_inj.txt, 4.5 MB)
- Detections and sky localization areas for 2015 scenario (2015_coinc.txt, 58.3 kB)
- Detections and sky localization areas for 2016 scenario (2016_coinc.txt, 51.0 kB)
- FITS sky maps for 2015 scenario (2015_fits.tar, 965.9 MB)
- FITS sky maps for 2016 scenario (2016_fits.tar, 795.8 MB)
- Raw SQLite database from GSTLAL analysis for 2015 scenario (H1L1-ALL_LLOID_1_injections-966384015-5184000.sqlite, 131.8 MB)
- Raw SQLite database from GSTLAL analysis for 2016 scenario (H1L1V1-ALL_LLOID_1_injections-966384015-5184000.sqlite, 2.7 GB)
- Simulated BNS signals for 2015 scenario (2015_inj.txt, 63.5 kB)
- Simulated BNS signals for 2016 scenario (2016_inj.txt, 49.5 kB)
- Sparkler slide, Keynote (first2years-slide.key, 3.3 MB)
- Sparkler slide, PDF (first2years-slide.pdf, 1.5 MB)
- arXiv preprint version of paper as published in ApJ.
- Published in ApJ vol. 795 pg. 105.
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