New black hole mergers from a search pipeline for gravitational waves with higher-order harmonics

ORAL

Abstract

Nearly all of the previous gravitational wave (GW) searches in the LIGO-Virgo data included GW waveforms with only the dominant quadrupole mode, i.e., omitting higher-order harmonics which are predicted by general relativity. I will present detections of ~10 new black hole mergers in the LIGO-Virgo O3 data from a novel search pipeline that includes the higher-order harmonics. Some of the new detections have astrophysically interesting properties such as BH masses in the IMBH and upper mass gap ranges, high-redshifts (1<z<2), asymmetric mass ratios and positive effective spins.

*We gratefully acknowledge support from the Friends of the Institute for Advanced Study Membership and from the W. M. Keck Foundation Fund. This research has made use of data, software and/or web tools obtained from the Gravitational Wave Open Science Center, a service of LIGO Laboratory, the LIGO Scientific Collaboration and the Virgo Collaboration.

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Publication: arXiv: 2312.06631, 2310.15233

Presenters

  • Digvijay Wadekar

    • Institute for Advanced Study

Authors

  • Digvijay Wadekar

    • Institute for Advanced Study

  • Tejaswi Venumadhav

    • UC Santa Barbara
    • University of California, Santa Barbara

  • Javier Roulet

    • Caltech

  • Ajit Mehta

    • UC Santa Barbara

  • Barak Zackay

    • Weizmann Institute

  • Jonathan Mushkin

    • Weizmann Institute
    • Weizmann institute of science

  • Seth Olsen

    • Princeton University

  • Matias Zaldarriaga

    • Institute for Advanced Study