Year: 2024
Type: article
Abstract: We present the results of two searches for gravitational waves from the postmerger remnants of the binary neutron star coalescence events GW170817 and GW190425. The searches are fully coherent over 1800 s of data from the second (for GW170817) and third (for GW190425) observing runs of the LIGO and Virgo observatories. The searches compute the matched filter $\mathcal{F}$-statistic, and use a piecewise model of the rapidly changing frequency evolution appropriate for young neutron stars. No detection is claimed. The peak root-sum-squared strain upper limit at 50% detection probability (${h}_{\mathrm{rss}}^{50%}$) of both searches occurs at 1700 Hz and is estimated at $1.64\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}22}\text{ }\text{ }{\mathrm{Hz}}^{\ensuremath{-}1/2}$ for GW170817, and $1.0\ifmmode\times\else\texttimes\fi{}{10}^{\ensuremath{-}22}\text{ }\text{ }{\mathrm{Hz}}^{\ensuremath{-}1/2}$ for GW190425. This is the first gravitational wave search for a neutron star remnant of GW190425.
Authors: Benjamin Grace, Karl Wette, Susan M. Scott
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: green
Funders: National Science and Technology Council, National Science Foundation, Australian Government, Istituto Nazionale di Fisica Nucleare Sezione di Padova, National Research Foundation, Ministry of Education, Culture, Sports, Science and Technology, Swinburne University of Technology, Academia Sinica, Ministry of Science, ICT and Future Planning, National Research Foundation of Korea, Max-Planck-Gesellschaft, State Government of Victoria, Centre National de la Recherche Scientifique, Istituto Nazionale di Fisica Nucleare, Ministry of Science and ICT, South Korea, National Science and Technology Council, Science and Technology Facilities Council, Australian Research Council, Japan Society for the Promotion of Science
Award: G8570682797
OpenAlex ID: W4403085675