README.md

4-OGC: Catalog of gravitational waves from compact-binary mergers

**Alexander H. Nitz ^1,2, Sumit Kumar^1,2, Yi-Fan Wang（王一帆)^1,2, Shilpa Kastha^1,2, Shichao Wu (吴仕超)^1,2, Marlin Schaefer^1,2, Rahul Dhurkunde^1,2, Collin D. Capano^1,2,3,

<sub>1. Albert-Einstein-Institut, Max-Planck-Institut for Gravitationsphysik, D-30167 Hannover, Germany
2. Leibniz Universitat Hannover, D-30167 Hannover, Germany
3. Department of Mathematics, University of Massachusetts, Dartmouth, MA 02747, USA</sub>

Introduction

We present the fourth Open Gravitational-wave Catalog (4-OGC) of binary neutron star (BNS), binary black hole (BBH) and neutron star-black hole (NSBH) mergers. The catalog includes observations from 2015-2020 covering the first through third observing runs (O1, O2, O3a, O3b) of Advanced LIGO and Advanced Virgo. The updated catalog includes 7 BBH mergers which were not previously reported with high significance during O3b for a total of 94 observations: 90 BBHs, 2 NSBHs, and 2 BNSs. The most confident new detection, GW200318_191337, has component masses 49.1(+16.4-12.0) Msun and 31.6(+12.0-11.6) Msun; its redshift of 0.84(+0.4-0.35) (90% credible interval) may make it the most distant merger so far. We provide reference parameter estimates for each of these sources using an up-to-date model accounting for instrumental calibration uncertainty. The corresponding data release also includes our full set of sub-threshold candidates.

Links

• Arxiv Preprint Paper
• Data Release Repository
• Search Results including the catalog of subthreshold candidates and related summary files.
• Posterior samples data release for individual compact-binary merger observations
  • Plots of the parameter estimate for each merger

License and Citation

This work is licensed under a Creative Commons Attribution-ShareAlike 3.0 United States License.

We encourage use of these data in derivative works. If you use the material provided here, please cite the paper using the reference:

@article{Nitz:2021zwj,
    author = {Nitz, Alexander H. and Kumar, Sumit and Wang, Yi-Fan and Kastha, Shilpa and Wu, Shichao and Sch\"afer, Marlin and Dhurkunde, Rahul and Capano, Collin D.},
    title = "{4-OGC: Catalog of gravitational waves from compact-binary mergers}",
    eprint = "2112.06878",
    archivePrefix = "arXiv",
    primaryClass = "astro-ph.HE",
    month = "12",
    year = "2021"
}