Searching for gravitational-wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array-Reference-Cited by-同舟云学术

Searching for gravitational-wave bursts from cosmic string cusps with the Parkes Pulsar Timing Array

Published:2020-12-02 Issue:1 Volume:501 Page:701-712
ISSN:0035-8711
Container-title:Monthly Notices of the Royal Astronomical Society
language:en
Short-container-title:

Author:

Yonemaru N¹²,Kuroyanagi S³⁴,Hobbs G²^ORCID,Takahashi K¹⁵,Zhu X-J⁶⁷^ORCID,Coles W A⁸,Dai S²^ORCID,Howard E²⁹¹⁰,Manchester R²,Reardon D⁷¹¹^ORCID,Russell C¹²,M Shannon R⁷¹¹^ORCID,Thyagarajan N¹³,Spiewak R⁷¹¹^ORCID,Wang J-B¹⁴¹⁵

Affiliation:

1. Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan

2. CSIRO Astronomy and Space Science, PO Box 76, Epping, NSW 1710, Australia

3. Graduate School of Science, Nagoya University, Nagoya 464-8601, Japan

4. Instituto de Física Teórica UAM-CSIC, Universidad Autonóma de Madrid, Cantoblanco, E-28049 Madrid, Spain

5. International Research Organization for Advanced Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan

6. School of Physics and Astronomy, Monash University, Clayton, VIC 3800, Australia

7. OzGrav: The Australian Research Council Centre of Excellence for Gravitational Wave Discovery

8. Electrical and Computer Engineering, University of California at San Diego, La Jolla, CA 92093, USA

9. Department of Physics and Astronomy, Macquarie University, Sydney 2109, Australia

10. Centre for Quantum Dynamics, Griffith University, Brisbane, Queensland 4111, Australia

11. Centre for Astrophysics and Supercomputing, Swinburne University of Technology, PO Box 218, Hawthorn, VIC 3122, Australia

12. CSIRO Scientific Computing Services, Australian Technology Park, Locked Bag 9013, Alexandria, NSW 1435, Australia

13. National Radio Astronomy Observatory, 1003 Lopezville Rd, Socorro, NM 87801, USA

14. Xinjiang Astronomical Observatory, Chinese Academy of Science, 150 Science 1-Street, Urumqi, Xinjiang 830011, China

15. Key Laboratory of Radio Astronomy, Chinese Academy of Science, 150 Science 1-Street, Urumqi, Xinjiang 830011, China

Abstract

ABSTRACT Cosmic strings are potential gravitational-wave (GW) sources that can be probed by pulsar timing arrays (PTAs). In this work we develop a detection algorithm for a GW burst from a cusp on a cosmic string, and apply it to Parkes PTA data. We find four events with a false alarm probability less than 1 per cent. However further investigation shows that all of these are likely to be spurious. As there are no convincing detections we place upper limits on the GW amplitude for different event durations. From these bounds we place limits on the cosmic string tension of Gμ ∼ 10−5, and highlight that this bound is independent from those obtained using other techniques. We discuss the physical implications of our results and the prospect of probing cosmic strings in the era of Square Kilometre Array.

Funder

JSPS

National Radio Astronomy Observatory

ARC

Youth Innovation Promotion Association of Chinese Academy of Sciences

National Key Research and Development Program of China

Chinese Academy of Sciences

Australian Research Council

Publisher

Oxford University Press (OUP)

Subject

Space and Planetary Science,Astronomy and Astrophysics