| Title: |
Search for continuous gravitational waves from unknown neutron stars in binary systems with long orbital periods in O3 data |
| Authors: |
Covas, P.; Papa, M.; Prix, R. |
| Source: |
The Astrophysical Journal |
| Publication Year: |
2025 |
| Collection: |
Max Planck Society: MPG.PuRe |
| Description: |
Gravitational waves emitted by asymmetric rotating neutron stars are the primary targets of continuous gravitational-wave searches. Neutron stars in binary systems are particularly interesting due to the potential for non-axisymmetric deformations induced by a companion star. However, all-sky searches for unknown neutron stars in binary systems are very computationally expensive and this limits their sensitivity and/or breadth. In this paper we present results of a search for signals with gravitational-wave frequencies between $50$ and $150$~Hz, from systems with orbital periods between $100$ and $1\,000$ days and projected semi-major axes between $40$ and $200$~light-seconds. This parameter-space region has never been directly searched before. We do not detect any signal, and our results exclude gravitational-wave amplitudes above $1.25 \times 10^{-25}$ at $144.32$~Hz with $95\%$ confidence. Our improved search pipeline is more sensitive than any previous all-sky binary search by about $75\%$. |
| Document Type: |
article in journal/newspaper |
| File Description: |
application/pdf |
| Language: |
unknown |
| Relation: |
info:eu-repo/semantics/altIdentifier/arxiv/2409.16196 |
| Availability: |
https://hdl.handle.net/21.11116/0000-000F-E139-3; https://hdl.handle.net/21.11116/0000-000F-E13B-1; https://hdl.handle.net/21.11116/0000-0011-53BC-C |
| Rights: |
info:eu-repo/semantics/openAccess ; http://creativecommons.org/licenses/by/4.0/ |
| Accession Number: |
edsbas.AD53AF52 |
| Database: |
BASE |