Zobrazeno 1 - 10
of 30
pro vyhledávání: '"Dorband, Ernst Nils"'
Autor:
Dorband, Ernst Nils
Numerical simulations of Kerr black holes are presented and the excitation of quasinormal modes is studied in detail. Issues concerning the extraction of gravitational waves from numerical space-times and analyzing them in a systematic way are discus
Externí odkaz:
http://etd.lsu.edu/docs/available/etd-03202007-163153/
Autor:
Reisswig, Christian, Husa, Sascha, Rezzolla, Luciano, Dorband, Ernst Nils, Pollney, Denis, Seiler, Jennifer
Publikováno v:
Phys.Rev.D80:124026,2009
Binary black-hole systems with spins aligned or anti-aligned to the orbital angular momentum provide the natural ground to start detailed studies of the influence of strong-field spin effects on gravitational wave observations of coalescing binaries.
Externí odkaz:
http://arxiv.org/abs/0907.0462
Autor:
Rezzolla, Luciano, Barausse, Enrico, Dorband, Ernst Nils, Pollney, Denis, Reisswig, Christian, Seiler, Jennifer, Husa, Sascha
Publikováno v:
Phys.Rev.D78:044002,2008
We provide a compact analytic formula to compute the spin of the black hole produced by the coalescence of two black holes. The expression, which uses an analytic fit of numerical-relativity data and relies on four assumptions, aims at modelling gene
Externí odkaz:
http://arxiv.org/abs/0712.3541
Publikováno v:
Phys.Rev.D77:084017,2008
We continue the program of constructing, within the Effective-One-Body (EOB) approach, high-accuracy analytic waveforms describing the signal emitted by inspiralling and coalescing black hole binaries. Here, we compare a recently derived, resummed 3
Externí odkaz:
http://arxiv.org/abs/0712.3003
Autor:
Rezzolla, Luciano, Diener, Peter, Dorband, Ernst Nils, Pollney, Denis, Reisswig, Christian, Schnetter, Erik, Seiler, Jennifer
Publikováno v:
Astrophys.J.674:L29-L32,2008
Determining the final spin of a black-hole (BH) binary is a question of key importance in astrophysics. Modelling this quantity in general is made difficult by the fact that it depends on the 7-dimensional space of parameters characterizing the two i
Externí odkaz:
http://arxiv.org/abs/0710.3345
Autor:
Rezzolla, Luciano, Dorband, Ernst Nils, Reisswig, Christian, Diener, Peter, Pollney, Denis, Schnetter, Erik, Szilagyi, Bela
Publikováno v:
Astrophys.J. 679:1422-1426,2008
Binary black-hole systems with spins aligned with the orbital angular momentum are of special interest as they may be the preferred end-state of the inspiral of generic supermassive binary black-hole systems. In view of this, we have computed the ins
Externí odkaz:
http://arxiv.org/abs/0708.3999
Autor:
Pollney, Denis, Reisswig, Christian, Rezzolla, Luciano, Szilagyi, Bela, Ansorg, Marcus, Deris, Barrett, Diener, Peter, Dorband, Ernst Nils, Koppitz, Michael, Nagar, Alessandro, Schnetter, Erik
Publikováno v:
Phys.Rev.D76:124002,2007
Binary black-hole systems with spins aligned with the orbital angular momentum are of special interest, as studies indicate that this configuration is preferred in nature. If the spins of the two bodies differ, there can be a prominent beaming of the
Externí odkaz:
http://arxiv.org/abs/0707.2559
Autor:
Pazos, Enrique, Dorband, Ernst Nils, Nagar, Alessandro, Palenzuela, Carlos, Schnetter, Erik, Tiglio, Manuel
Publikováno v:
Class.Quant.Grav.24:S341-S368,2007
We present a method for extracting gravitational waves from numerical spacetimes which generalizes and refines one of the standard methods based on the Regge--Wheeler--Zerilli perturbation formalism. [abridged] We then present fully nonlinear three-d
Externí odkaz:
http://arxiv.org/abs/gr-qc/0612149
Publikováno v:
Phys.Rev.D74:084028,2006
We present numerical results from three-dimensional evolutions of scalar perturbations of Kerr black holes. Our simulations make use of a high-order accurate multi-block code which naturally allows for fixed adaptivity and smooth inner (excision) and
Externí odkaz:
http://arxiv.org/abs/gr-qc/0608091
Publikováno v:
Class.Quant.Grav.23:S553-S578,2006
We describe a generic infrastructure for time evolution simulations in numerical relativity using multiple grid patches. After a motivation of this approach, we discuss the relative advantages of global and patch-local tensor bases. We describe both
Externí odkaz:
http://arxiv.org/abs/gr-qc/0602104