Simulations of rotating neutron star collapse with the puncture gauge: End state and gravitational waveforms
- Creators
- Dietrich, Tim
- Bernuzzi, Sebastiano
Abstract
We reexamine the gravitational collapse of rotating neutron stars to black holes by new 3+1 numerical relativity simulations employing the Z4c formulation of Einstein equations, the moving puncture gauge conditions, and a conservative mesh refinement scheme for the general relativistic hydrodynamics. The end state of the collapse is compared to the vacuum spacetime resulting from the evolution of spinning puncture initial data. Using a local analysis for the metric fields, we demonstrate that the two spacetimes actually agree. Gravitational waveforms are analyzed in some detail. We connect the emission of radiation to the collapse dynamics using simplified spacetime diagrams, and discuss the similarity of the waveform structure with the one of black hole perturbation theory.
Additional Information
© 2015 American Physical Society. Received 18 December 2014; published 23 February 2015. The authors thank Christian Reisswig and Christian Ott for discussions and for providing the waveform used in Fig. 7; Enno Harms for providing the data of the Teukolsky perturbative simulation used in Fig. 9; Bernd Brügmann, Alessandro Nagar, Pedro Montero, and Nicolas Sanchis- Gual for discussions; and Nathan Johnson-McDaniel for comments on the manuscript. This work was supported in part by DFG Grant SFB/Transregio 7 "Gravitational Wave Astronomy" and the Graduierten-Akademie Jena. S. B. acknowledges partial support from the National Science Foundation under Grants No. NSF AST-1333520, No. PHY-1404569, and No. AST-1205732. The authors acknowledge the Gauss Centre for Supercomputing e.V. for providing computing time on the GCS Supercomputer SuperMUC (Munich), the John von Neumann Institute for Computing (NIC) providing computing time of JUROPA (JSC), and the Extreme Science and Engineering Discovery Environment (XSEDE) for providing computer time on Stampede (Texas).Attached Files
Published - PhysRevD.91.044039.pdf
Submitted - 1412.5499v1.pdf
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Additional details
- Eprint ID
- 56799
- Resolver ID
- CaltechAUTHORS:20150421-084446860
- SFB/Transregio 7
- Deutsche Forschungsgemeinschaft (DFG)
- Graduierten-Akademie Jena
- AST-1333520
- NSF
- PHY-1404569
- NSF
- AST-1205732
- NSF
- Created
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2015-04-21Created from EPrint's datestamp field
- Updated
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2021-11-10Created from EPrint's last_modified field