This waveform repository contains files with the second time derivative of the quadrupole moments extracted from numerical simulations of neutron-star mergers. A description of these simulations and information on the simulation tool can be found in the references listed below. These references also provide details about the assumptions and approximations of the models. This repository contains in particular the waveforms used in [6].

The waveforms are sorted by the equation of state that was used in the respective simulation. See, e.g., [6] for the nomenclature of the models and the references for the equation of state model. The subfolders of every equation of state contain different waveforms for various binary masses specified in the filename. Example: The file secderivqpoles_16384Hz_sfhx_1215_lessvisc.dat provides data from a merger of a 1.2-1.5 solar mass merger described by the SFHX equation of state. Here the masses refer to the gravitational masses of the stars at infinite binary separation. 16384Hz refers to the sampling rate of 16384 Hertz. The flag *visc refers to different artificial viscosity scheme used in the simulation. Currently all models assume initially irrotational stars.

File format:

Every file contains 7 columns. Data are given in geometrical units. The first column provides the time with an arbitrary offset (multiply by 4.926e-3 to obtain the time in milliseconds). The next six columns provide the second time derivative of the quadrupole moment in the following order: xx-component, xy-component, xz-component, yy-component, yz-component, zz-component.

The simulations typically start a few orbits before merging.

Notes:

Using the data in this archive is permitted for non-commercial purposes under the condition of citing this WWW page and the corresponding references. If you intend to use these data for a scientific publication or project, please contact us (to provide access and further explanations on the models and their usage). All efforts have been made to eliminate errors, but no warranty whatsoever is provided. Please inform us of any errors or inconsistencies that you may detect.

Access and Contact:

The access to the repository is password protected. To obtain access, please contact

Andreas Bauswein (andreas.bauswein at h-its.org)

References:

Simulations:

[1] A. Bauswein and H.-T. Janka. Measuring Neutron-Star Properties via Gravitational Waves from Neutron-Star Mergers. Phys. Rev. Lett. 108, 011101 (2012)

[2] A. Bauswein, H.-T. Janka, K. Hebeler, and A. Schwenk. Equation-of-state dependence of the gravitational-wave signal from the ring-down phase of neutron-star mergers. Phys. Rev. D. 86, 063001 (2012)

[3] A. Bauswein, N. Stergioulas, and H.-T. Janka. Revealing the high-density equation of state through binary neutron star mergers. Phys. Rev. D. 90, 023002 (2014)

[4] J. Clark, A. Bauswein, L. Cadonati, H.-T. Janka, C. Pankow, and N. Stergioulas. Prospects for high frequency burst searches following binary neutron star coalescence with advanced gravitational wave detectors. Phys. Rev. D 90, 062004 (2014)

[5] A. Bauswein and N. Stergioulas. Unified picture of the post-merger dynamics and gravitational wave emission in neutron star mergers. Phys. Rev. D 91, 124056 (2015)

[6] J.A. Clark, A. Bauswein, N. Stergioulas, D. Shoemaker. Observing Gravitational Waves From The Post-Merger Phase Of Binary Neutron Star Coalescence. Classical and Quantum Gravity 33, 085003 (2016)

[7] A. Bauswein, N. Stergioulas, H.-T. Janka. Exploring properties of high-density matter through remnants of neutron-star mergers. European Physical Journal A 52, 56 (2016)

Code:

[8] R. Oechslin, S. Rosswog, and F.-K. Thielemann. Conformally flat smoothed particle hydrodynamics application to neutron star mergers. Phys. Rev. D. 65, 103005 (2002)

[9] R. Oechslin, H.-T. Janka, and A. Marek. Relativistic neutron star merger simulations with non-zero temperature equations of state. I. Variation of binary parameters and equation of state. Astron. Astrophys. 467, 395 (2007)

[10] A. Bauswein, H.-T. Janka, and R. Oechslin. Testing approximations of thermal effects in neutron star merger simulations. Phys. Rev. D. 82, 084043 (2010)

[11] A. Bauswein, H.-T. Janka, K. Hebeler, and A. Schwenk. Equation-of-state dependence of the gravitational-wave signal from the ring-down phase of neutron-star mergers. Phys. Rev. D. 86, 063001 (2012)