Special coverage

Simulaciones espacio-temporales (In Spanish)
CESGA: Usuarios de Supercomputación, 15 May 2012
SDSC's Trestles Provides Rapid Turnaround...
ScienceDaily, 14 July 2011
No naked black holes
ScienceNews, 3 October 2008
Intergalactic Projectiles
Physical Review Focus Article, 30 May 2007

Publications

Gerosa, D., Kesden, M., Berti, E., O'Shaughnessy, R., Sperhake, U.,
Resonant-plane locking and spin alignment in stellar-mass black-hole binaries: a diagnostic of compact-binary formation
arXiv:1302.4442 [gr-qc]
Sperhake, U.,
Numerical relativity in higher dimensions
arXiv:1301.3772 [gr-qc]
Witek, H., Cardoso, V., Ishibashi, A., Sperhake, U.,
Superradiant instabilities in astrophysical systems
arXiv:1212.0551 [gr-qc]
Sperhake, U., Berti, E., Cardoso, V., Pretorius, F.,
Universality, maximum radiation and absorption in high-energy collisions of black holes with spin
arXiv:1211.6114 [gr-qc]
Zilhão, M., Cardoso, V., Herdeiro, C., Lehner, L., Sperhake, U.,
Collisions of charged black holes
Phys. Rev. D 85 124062 (2012)
Zilhão, M., Cardoso, V., Gualtieri, L., Herdeiro, C., Sperhake, U., Witek, H.,
Dynamics of black holes in de Sitter spacetimes
Phys. Rev. D 85 104039 (2012)
Berti, E., Kesden, M., Sperhake, U.,
Effects of post-Newtonian Spin Alignment on the Distribution of Black-Hole Recoils
arXiv:1203.2920 [astro-ph]
Ajith, P., et al.,
The NINJA-2 catalog of hybrid post-Newtonian/numerical-relativity waveforms for non-precessing black-hole binaries
Class. Quantum Grav. 29 124001 (2012)
Cardoso, V., et al.,
NR/HEP: roadmap for the future
b arXiv:1201.5118 [hep-th]
Zilhão, M., Ansorg, M., Cardoso, V., Gualtieri, L., Herdeiro, C., Sperhake, U., Witek, H.,
Higher-dimensional puncture initial data
Phys. Rev. D 84 084039 (2011)
Witek, H., Cardoso, V., Gualtieri, L., Herdeiro, C., Sperhake, U., Zilhão, M.,
Numerical Relativity in D dimensional space-times: Collisions of unequal mass black holes
J. Phys. Conf. Ser. 314, 012104 (2011)
Zilhão, M., Cardoso, V., Gualtieri, L., Herdeiro, C., Nerozzi, A., Sperhake, U., Witek, H.,
Simulations of black holes in compactified spacetimes
J. Phys. Conf. Ser. 314, 012103 (2011)
Sperhake, U., Berti, E., Cardoso, V.,
Numerical simulations of black-hole binaries and gravitational wave emission
arXiv:1107.2819 [gr-qc]
Sperhake, U., Cardoso, V., Ott, C. D., Schnetter, E., Witek, H.,
Collisions of unequal mass black holes and the point particle limit
Phys. Rev. D 84 084038 (2011)
Sperhake, U., Brügmann, B., Müller, D., Sopuerta, C. F.,
11-orbit inspiral of a mass ratio 4:1 black-hole binary
Class. Quantum Grav. 28 134004 (2011)
Ott, C. D., Reisswig, C., Schnetter, E., O'Connor, E., Sperhake, U., Löffler, F., Diener, P., Abdikamalov, E., Hawke, I., Burrows, A.,
Dynamics and Gravitational Wave Signature of Collapsar Formation
Phys. Rev. Lett. 106 161103 (2011)
Reisswig, C., Ott, C. D., Sperhake, U., Schnetter, E.,
Gravitational Wave Extraction in Simulations of Rotating Stellar
Phys. Rev. D 83 064008 (2011)
Witek, H., Hilditch, D., Sperhake, U.,
Stability of the puncture method with a generalized BSSN formulation
Phys. Rev. D 83 104041 (2011)
Sperhake, U., Berti, E., Cardoso, V., Pretorius, F., Yunes, N.,
Superkicks in ultrarelativistic encounters of spinning black holes
Phys. Rev. D 83 024037 (2011)
Witek, H., Cardoso, V., Gualtieri, L. Herdeiro, C., Sperhake, U., Zilhão, M.,
Head-on collisions of unequal mass black holes in D=5 dimensions
Phys. Rev. D 83 044017 (2011)
Brizuela, D., Marti´n-García, J. M., Sperhake, U., Kokkotas, K. D.,
High-order perturbations of a spherical collapsing star
Phys. Rev. D 82 104039 (2010)
Zilhão, M., Witek, H., Sperhake, U., Cardoso, V., Gualtieri, L., Herdeiro, C., Nerozzi, A.,
Numerical relativity in higher dimensions
J. Phys. Conf. Ser. 229, 012074 (2010)
Witek, H., Cardoso, V., Gualtieri, L., Herdeiro, C., Nerozzi, A., Sperhake, U., Zilhão, M.,
Black holes in a box
J. Phys. Conf. Ser. 229, 012072 (2010)
Witek, H., Zilhão, M., Gualtieri, L., Cardoso, V., Nerozzi, A., Sperhake, U.,
Numerical relativity for D dimensional space-times: Head-on collisions of black holes and gravitational wave extraction
Phys. Rev. D 82 104014 (2010)
Witek, H., Cardoso, V., Herdeiro, C., Nerozzi, A., Sperhake, U., Zilhão, M.,
Black holes in a box: Towards the numerical evolution of black holes in AdS
Phys. Rev. D 82 104037 (2010)
Kesden, M., Sperhake, U., Berti, E.,
Relativistic Suppression of Black Hole Recoils
Astrophys. J. 715 1006-1011 (2010)
Sperhake, U., Cardoso, V., Pretorius, F., Berti, E., Hinderer, T., Yunes, N.,
Ultra-relativistic grazing collisions of black holes
Proceedings of the 12th Marcel Grossmann Meeting (2009)
Walter, P., Allen, J., Matzner, R., Anderson, M., Nerozzi, A., Sperhake, U.,
Using OpenGR for Numerical Relativity
Proceedings of the 12th Marcel Grossmann Meeting (2009)
Witek, H., Cardoso, V., Herdeiro, C., Nerozzi, A., Sperhake, U., Zilhão,
Black Holes in a Box
Proceedings of the 12th Marcel Grossmann Meeting (2009)
Berti, E., Cardoso, V., Hinderer, T., Lemos, M., Pretorius, F., Sperhake, U., Yunes, N.,
Semianalytic estimates of scattering thresholds and gravitational radiation in ultrarelativistic black hole encounters
Phys. Rev. D 81 104048 (2010)
Kesden, M., Sperhake, U. , Berti, E.,
Final spins from the merger of precessing binary black holes
Phys. Rev. D 81 084054 (2010)
Zilhão, M., Witek, H., Sperhake, U., Cardoso, V., Gualtieri, L., Herdeiro, C., Nerozzi, A.,
Numerical relativity for D dimensional axially symmetric space-times: formalism and code tests
Phys. Rev. D 81 084052 (2010)
Berti, E., Cardoso, V., Gualtieri, L., Pretorius, F., Sperhake, U.,
Comment on "Kerr Black Holes as Particle Accelerators to Arbitrarily High Energy"
Phys. Rev. Lett. 103 239001 (2009)
Sperhake, U., Cardoso, V., Pretorius, F., Berti, E., Hinerer, T., Yunes, N.,
Cross section, final spin and zoom-whirl behavior in high-energy black hole collisions
Phys. Rev. Lett. 103 131102 (2009)
Lovelace, G., Chen, Y., Cohen, M., Kaplan, J. D., Keppel, D., Matthews, K. D., Nichols, D. A., Scheel, M. A., Sperhake, U.,
Momentum flow in black-hole binaries: II. Numerical simulations of equal-mass, head-on mergers with antiparallel spins
Phys. Rev. D 82 064031 (2010)
Gabler, M., Sperhake, U., Andersson, N.,
Nonlinear radial oscillations of neutron stars
Phys. Rev. D 80 064012 (2009)
Aylott, B., et al.,
Status of NINJA: the Numerical INJection Analysis project
Class. Quant. Grav. 26 114008 (2009)
Aylott, B., et al.,
Testing gravitational-wave searches with numerical relativity waveforms: Results from the first Numerical INJection Analysis (NINJA) project
Class. Quant. Grav. 26 165008 (2009)
González, J. A., Sperhake, U., Brügmann, B.,
Black-hole binary simulations: the mass ratio 10:1
Phys. Rev. D 79 124006 (2009)
Sperhake, U., Cardoso, V., Pretorius, F., Berti, E., González, J. A.,
The high-energy collision of two black holes
Phys. Rev. Lett. 101 161101 (2008)
Gualtieri, L., Berti, E., Cardoso, V., Sperhake, U.,
Transformation of the multipolar components of gravitational radiation under rotations and boosts
Phys. Rev. D 78 044024 (2008)
Berti, E., Cardos, V., González, J.A., Sperhake, U., Brügmann, B.,
Multipolar analysis of spinning binaries
Class. Quant. Grav. 25 114035 (2008)
Sperhake, U., Berti, E., Cardoso, V., González, J.A., Brügmann, B., Ansorg, M.,
Eccentric binary black-hole mergers: The transition from inspiral to plunge in general relativity
Phys. Rev. D 78 064069 (2008)
Ajith, P., et al.,
A template bank for gravitational waveforms from coalescing binary black holes: I. non-spinning binaries
Phys. Rev. D 77 104017 (2008)
Marronetti, P., Tichy, W., Brügmann, B., González, J.A., Sperhake, U.,
High-spin binary black hole mergers
Phys. Rev. D 77 064010 (2008)
Brügmann, B., González, J.A., Hannam, M.D., Husa, S., Sperhake, U.,
Exploring black hole superkicks
Phys. Rev. D 77 124047 (2008)
Hannam, M.D., Husa, S., González, J.A., Sperhake, U., Brügmann, B.,
Where post-Newtonian and numerical-relativity waveforms meet
Phys. Rev. D 77 044020 (2008)
Husa, S., Hannam, M.D., González, J.A., Sperhake, U., Brügmann, B.,
Reducing eccentricity in black-hole binary evolutions with initial parameters from post-Newtonian inspiral
Phys. Rev. D 77 044037
Husa, S., González, J.A., Hannam, M.D., Brügmann, B., Sperhake, U.,
Reducing phase error in long numerical binary black hole evolutions with sixth order finite differencing
Class. Quant. Grav. 25 105006 (2008)
Sperhake, U., Brügmann, B., González, J.A., Hannam, M.D., Husa, S.
Head-on collisions of different initial data
Proceedings of the 11th Marcel Grossmann Meeting (2006)
Ajith, P. et al.,
Phenomenological template family for black-hole coalescence waveforms
Class. Quantum Grav. 24 S689-699 (2007)
Berti, E., Cardoso, V., González, J.A., Sperhake, U., Hannam, M.D., Husa, S., Brügmann, B.,
Inspiral, merger and ringdown of unequal mass black hole binaries: a multipolar analysis
Phys. Rev. D 76 064034 (2007)
González, J.A., Hannam, M.D., Sperhake, U., Brügmann, B., Husa, S.,
Supermassive kicks for spinning black holes
Phys. Rev. Lett. 98 231101 (2007)
Marronetti, P., Tichy, W., Brügmann, B., González, J.A., Hannam, M.D., Husa, S., Sperhake, U.,
Binary black holes on a budget: Simulations using workstations
Class. Quantum Grav. 24 S43-58 (2007)
Berti, E., Cardos, V., González, J.A., Sperhake, U.,
Mining information from binary black hole mergers: a comparison of estimation methods for complex exponentials in noise
Phys. Rev. D 75 124017 (2007)
Hannam, M.D., Husa, S., Ó Murchadha, N., Brügmann, B., González, J.A., Sperhake, U.,
Where do moving punctures go?
Proceedings of the 29th Spanish Relativity Meeting (2007)
Hannam, M.D., Husa, S., Brügmann, B., González, J.A., Sperhake, U.,
Beyond the Bowen-York extrinsic curvature for spinning black holes
Class. Quantum Grav. 23 S15-24 (2007)
González, J.A., Sperhake, U. and Brügmann, B., Hannam, M.D., Husa, S.,
Maximum kick from non-spinning black-hole binary inspiral
Phys. Rev. Lett. 98 091101 (2007)
Brügmann, B., González, J.A., Hannam, M.D., Husa, S., Sperhake, U., Tichy, W.,
Calibration of Moving Puncture Simulations
Phys. Rev. D 77 024027 (2008)
Sperhake, U.,
Binary black-hole evolutions of excision and puncture data
Phys. Rev. D 76 104015 (2007)
Sopuerta, C.F., Sperhake, U., Laguna, P.,
Hydro-without-Hydro Framework for Simulations of Black Hole-Neutron Star Binaries
Class. Quantum Grav. 23 S579-598 (2006)
Sperhake, U., Kelly, B., Laguna, P., Smith, K.L., Schnetter, E.,
Black hole head-on collisions and gravitational waves with fixed mesh-refinement and dynamic singularity excision
Phys Rev D 71 124042 (2005)
Wucknitz, O., Sperhake, U.,
Deflection of light and particles by moving gravitational lenses
Phys Rev D 69 063001 (2004)
Sperhake, U., Smith, K. L., Kelly, B., Laguna, P., Shoemaker, D.,
Impact of densitized lapse slicings on evolutions of a wobbling black hole
Phys Rev D 69 024012 1-10 (2004)
Shoemaker, D., Smith, K., Sperhake, U., Laguna, P., Schnetter, E., Fiske, D.,
Moving black holes via singularity excision
Class. Quantum Grav. 20 3729-3744 (2003)
Sperhake, U.,
Non-linear neutron star oscillations viewed as deviations from an equilibrium state
Proceedings of the 10th Hellenic Relativity Conference (2003)
Sperhake, U.,
Non-linear neutron star oscillations viewed as deviations from an equilibrium state
Proceedings of the 1st Advanced Research Workshop on Gravity, Astrophysics and Strings @ the Black Sea (2003)
Sperhake, U., Sjödin K. R. S., Vickers, J. A.,
Dynamic Cosmic Strings II: Numerical evolution of excited Cosmic Strings
Phys Rev D 63 024012 (2000)
Sjödin K. R. S., Sperhake U., Vickers, J. A.,
Dynamic Cosmic Strings I
Phys Rev D 63 024011 (2000)
Allard N., Koester D., Sperhake U., Jordan S., Finley D.,
Quasi-molecular satellites of Lyman beta observed with ORFEUS
Proceedings of the 11th European Workshop on White Dwarfs
Koester D., Sperkake U., Allard N.F., Finley D.S., Jordan S.,
Quasi-molecular satellites of Lyman beta in ORFEUS observations of DA white dwarfs
A&A 336, 276 (1998)
Sperhake U., Reimers D,
The ultraviolet spectrum of HS 1700+6416 revisited
Proc. 13th IAP Conf.

Theses

PhD thesis, Southampton, 2001
Non-linear numerical schemes in General Relativity
Diploma thesis, Sternwarte Hamburg-Bergedorf, 1997
Metal abundances of the Absorber-Systems toward HS1700+6416