2016/10/31 by J. C. N. de Araújo, José C. N. de Araujo, Jaziel G. Coelho +2 · 13 citations
Earth and Planetary Sciences · Physics and Astronomy · #Amplitude #Astronomy #Astrophysics #Atomic and Subatomic Physics Research #Context (archaeology) #Einstein Telescope #Geophysics and Gravity Measurements #Gravitational wave #Gravitational-wave observatory #LIGO #Neutron star #Observable #Optics #Physics #Pulsar #Pulsars and Gravitational Waves Research #Quantum mechanics #astro-ph.HE #astro-ph.SR
paper · pdf · doi:10.1140/epjc/s10052-017-4925-3
published in The European Physical Journal C 77(5) (Springer Science+Business Media) · 45 pages, 6 figures
arxiv created 2017/02/13 · openalex publication_date 2017/05/01 · arxiv updated 2017/05/29 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
In one of our previous articles we have considered the role of a time dependent magnetic ellipticity on the pulsars’ braking indices and on the putative gravitational waves these objects can emit. Since only nine of more than 2000 known pulsars have accurately measured braking indices, it is of interest to extend this study to all known pulsars, in particular as regards gravitational wave generation. To do so, as shown in our previous article, we need to know some pulsars’ observable quantities such as: periods and their time derivatives, and estimated distances to the Earth. Moreover, we also need to know the pulsars’ masses and radii, for which we are adopting current fiducial values. Our results show that the gravitational wave amplitude is at best h ∼ 10-28 . This leads to a pessimistic prospect for the detection of gravitational waves generated by these pulsars, even for Advanced LIGO and Advanced Virgo, and the planned Einstein Telescope, if the ellipticity has a magnetic origin.