Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/121054
Citations | ||
Scopus | Web of Science® | Altmetric |
---|---|---|
?
|
?
|
Type: | Journal article |
Title: | Searches for gravitational waves from known pulsars at two harmonics in 2015-2017 LIGO data |
Author: | Abbott, B.P. Abbott, R. Abbott, T.D. Abraham, S. Acernese, F. Ackley, K. Adams, C. Adhikari, R.X. Adya, V.B. Affeldt, C. Agathos, M. Agatsuma, K. Aggarwal, N. Aguiar, O.D. Aiello, L. Ain, A. Ajith, P. Allen, G. Allocca, A. Aloy, M.A. et al. |
Citation: | The Astrophysical Journal: an international review of astronomy and astronomical physics, 2019; 879(1):10-1-10-28 |
Publisher: | American Astronomical Society |
Issue Date: | 2019 |
ISSN: | 0004-637X 1538-4357 |
Statement of Responsibility: | B.P. Abbott … D. Beniwal … D.D. Brown … H. Cao … A.A. Ciobanu … M.R. Ganija … C. Ingram … W. Kim … E.J. King … J. Munch … S. Ng … D.J. Ottaway … P.J. Veitch … et al. (The LIGO Scientific Collaboration and the Virgo Collaboration) |
Abstract: | We present a search for gravitational waves from 222 pulsars with rotation frequencies ≥ 10 Hz. We use advanced LIGO data from its first and second observing runs spanning 2015–2017, which provides the highest-sensitivity gravitational-wave data so far obtained. In this search we target emission from both the l = m = 2 mass quadrupole mode, with a frequency at twice that of the pulsar's rotation, and the l = 2, m = 1 mode, with a frequency at the pulsar rotation frequency. The search finds no evidence for gravitational-wave emission from any pulsar at either frequency. For the l = m = 2 mode search, we provide updated upper limits on the gravitational-wave amplitude, mass quadrupole moment, and fiducial ellipticity for 167 pulsars, and the first such limits for a further 55. For 20 young pulsars these results give limits that are below those inferred from the pulsars' spin-down. For the Crab and Vela pulsars our results constrain gravitational-wave emission to account for less than 0.017% and 0.18% of the spin-down luminosity, respectively. For the recycled millisecond pulsar J0711−6830 our limits are only a factor of 1.3 above the spin-down limit, assuming the canonical value of 10³⁸ kg m² for the star's moment of inertia, and imply a gravitational-wave-derived upper limit on the star's ellipticity of 1.2 × 10⁻⁸. We also place new limits on the emission amplitude at the rotation frequency of the pulsars. |
Keywords: | Gravitational waves; pulsars: general; stars: neutron |
Rights: | © 2019. The American Astronomical Society. All rights reserved. |
DOI: | 10.3847/1538-4357/ab20cb |
Grant ID: | ARC |
Published version: | https://iopscience.iop.org/article/10.3847/1538-4357/ab20cb |
Appears in Collections: | Aurora harvest 8 Physics publications |
Files in This Item:
There are no files associated with this item.
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.