English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Gravitational waveforms from SpEC simulations : neutron star-neutron star and low-mass black hole-neutron star binaries

Foucart, F., Duez, M. D., Hinderer, T., Caro, J., Williamson, A. R., Boyle, M., et al. (in preparation). Gravitational waveforms from SpEC simulations: neutron star-neutron star and low-mass black hole-neutron star binaries.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/21.11116/0000-0002-B98E-E Version Permalink: http://hdl.handle.net/21.11116/0000-0002-EBB4-A
Genre: Paper

Files

show Files
hide Files
:
1812.06988.pdf (Preprint), 3MB
Name:
1812.06988.pdf
Description:
File downloaded from arXiv at 2019-01-07 10:07
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-

Locators

show

Creators

show
hide
 Creators:
Foucart, Francois, Author
Duez, Matthew D., Author
Hinderer, Tanja, Author
Caro, Jesus, Author
Williamson, Andrew R., Author
Boyle, Michael, Author
Buonanno, Alessandra1, Author              
Haas, Roland, Author
Hemberger, Daniel A., Author
Kidder, Lawrence E., Author
Pfeiffer, Harald1, Author              
Scheel, Mark A., Author
Affiliations:
1Astrophysical and Cosmological Relativity, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_1933290              

Content

show
hide
Free keywords: General Relativity and Quantum Cosmology, gr-qc, Astrophysics, High Energy Astrophysical Phenomena, astro-ph.HE
 Abstract: Gravitational waveforms from numerical simulations are a critical tool to test and analytically calibrate the waveform models used to study the properties of merging compact objects. In this paper, we present a series of high-accuracy waveforms produced with the SpEC code for systems involving at least one neutron star. We provide for the first time waveforms with sub-radian accuracy over more than twenty cycles for low-mass black hole-neutron star binaries, including binaries with non-spinning objects, and binaries with rapidly spinning neutron stars that maximize the impact on the gravitational wave signal of the near-resonant growth of the fundamental excitation mode of the neutron star (f-mode). We also provide for the first time with SpEC a high-accuracy neutron star-neutron star waveform. These waveforms are made publicly available as part of the SxS catalogue. We compare our results to analytical waveform models currently implemented in data analysis pipelines. For most simulations, the models lie outside of the predicted numerical errors in the last few orbits before merger, but do not show systematic deviations from the numerical results: comparing different models appears to provide reasonable estimates of the modeling errors. The sole exception is the equal-mass simulation using a rapidly counter-rotating neutron star to maximize the impact of the excitation of the f-mode, for which all models perform poorly. This is however expected, as even the single model that takes f-mode excitation into account ignores the significant impact of the neutron star spin on the f-mode excitation frequency.

Details

show
hide
Language(s):
 Dates: 2018-12-17
 Publication Status: Not specified
 Pages: 17p, 10 figures
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1812.06988
URI: http://arxiv.org/abs/1812.06988
 Degree: -

Event

show

Legal Case

show

Project information

show

Source

show