Professor Leor Barack PhD, BSc

Professor of Theoretical Physics

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Professor Leor Barack is a Professor within Mathematical Sciences at the University of Southampton.

Background

2008 - date Senior Lecturer in Applied mathematics, University of Southampton

2004 - 2008 Lecturer in Applied mathematics, University of Southampton

Senior postdoctoral fellow, NASA center for gravitational wave astronomy and department of Physics, Brownsville, Texas

Marie Curie postdoctoral Fellow, Max Planck Institute for Gravitational Physics (Albert Einstein Institute), Germany

PhD Physics, Technion of Israel

BSc Physics, Ben-Gurion University (Israel)

Research

Responsibilities

Publications

Contact

Research interests

Dr Barack's research covers topics in mathematical and astrophysical Relativity, with a particular focus on the two-body problem in curved spacetime and its implications to gravitational-wave astronomy. He has studied various topics in general-relativistic dynamics and black hole perturbation theory, and is mostly known for his work on the problem of gravitational radiation reaction (or "self force") in astrophysical binaries undergoing radiative decay. His team in Southampton is developing theoretical models that predict the orbital evolution of compact stars as they radiatively inspiral into massive black holes -- a key source of gravitational waves for the planned spaceborne detector LISA (Laser Interferometer Space Antenna).

Research group

Applied Mathematics and Theoretical Physics

Affiliate research group

Relativistic Astrophysics

Director of Service teaching for Mathematics
Programme coordinator for Maths with Physics and Maths with Astronomy

Articles

Barack, L., & Giudice, P. (2017). Time-domain metric reconstruction for self-force applications. Physical Review D, 95, [104033]. DOI: 10.1103/PhysRevD.95.104033
Merlin Gonzalez, C., Ori, A., Pound, A., & Van De Meent, M. (2016). Completion of metric reconstruction for a particle orbiting a Kerr black hole. Physical Review D, 94(104066), 1-29. DOI: 10.1103/PhysRevD.94.104066
Akcay, S., Le Tiec, A., Barack, L., Sago, N., & Warburton, N. (2015). Comparison between self-force and post-Newtonian dynamics: Beyond circular orbits. Physical Review D, 91, 1-32. [124014]. DOI: 10.1103/PhysRevD.91.124014
Colleoni, M., & Barack, L. (2015). Overspinning a Kerr black hole: The effect of the self-force. Physical Review D, 91, [104024]. DOI: 10.1103/PhysRevD.91.104024
Colleoni, M., Barack, L., Shah, A., & Van De Meent, M. (2015). Self-force as a cosmic censor in the Kerr overspinning problem. Physical Review D, 92, [084044]. DOI: 10.1103/PhysRevD.92.084044
Isoyama, S., Barack, L., Dolan, S., Le Tiec, A., Nakano, H., Shah, A., ... Warburton, N. (2014). Gravitational Self-Force Correction to the Innermost Stable Circular Equatorial Orbit of a Kerr Black Hole. Physical Review Letters, 113, 1-5. [161101]. DOI: 10.1103/PhysRevLett.113.161101
Pound, A., Merlin, C., & Barack, L. (2014). Gravitational self-force from radiation-gauge metric perturbations. Physical Review D, 89(2), 24009. DOI: 10.1103/PhysRevD.89.024009
Dolan, S. R., Warburton, N., Harte, A. I., Le Tiec, A., Wardell, B., & Barack, L. (2014). Gravitational self-torque and spin precession in compact binaries. Physical Review D, 89(6), 64011. DOI: 10.1103/PhysRevD.89.064011
Akcay, S., Warburton, N., & Barack, L. (2013). Frequency-domain algorithm for the Lorenz-gauge gravitational self-force. Physical Review D, 88(10), 1-22. DOI: 10.1103/PhysRevD.88.104009
Warburton, N., Barack, L., & Sago, N. (2013). Isofrequency pairing of geodesic orbits in Kerr geometry. Physical Review D, 87(84012). DOI: 10.1103/PhysRevD.87.084012
Gundlach, C., Akcay, S., Barack, L., & Sago, N. (2012). Critical phenomena at the threshold of immediate merger in binary black hole systems: the extreme mass ratio case. Physical Review D, 86(84022), 084022-[17pp]. DOI: 10.1103/PhysRevD.86.084022
Warburton, N., Akcay, S., Barack, L., Jonathan, G., & Sago, N. (2012). Evolution of inspiral orbits around a Schwarzschild black hole. Physical Review D, 85(61501), 1-5.
Akcay, S., Barack, L., Damour, T., & Sago, N. (2012). Gravitational self-force and the effective-one-body formalism between the innermost stable circular orbit and the light ring. Physical Review D, 86(104041), 104041 -[37pp]. DOI: 10.1103/PhysRevD.86.104041
Le Tiec, A., Mroué, A. H., Barack, L., Buonanno, A., Pfeiffer, H. P., Sago, N., & Taracchini, A. (2011). Periastron advance in black hole binaries. Physical Review Letters, 82(14), 141101-[5pp]. DOI: 10.1103/PhysRevLett.107.141101
Warburton, N., & Barack, L. (2011). Self force on a scalar charge in Kerr spacetime: eccentric equatorial orbits. Physical Review D. DOI: 10.1103/PhysRevD.83.124038
Barack, L., & Dolan, S. (2011). Self force via m-mode regularization and 2+1D evolution: foundations and a scalar-field implementation on Schwarzschild. Physical Review D, 83(2), 024019-[31pp]. DOI: 10.1103/PhysRevD.83.024019
Dolan, S., Barack, L., & Wardell, B. (2011). Self-force via m-mode regularization and 2+1D evolution. II. Scalar-field implementation on Kerr spacetime. Physical Review D, 84(8), 084001-[21pp]. DOI: 10.1103/PhysRevD.84.084001
Barack, L., & Sago, N. (2010). Gravitational self-force on a particle in eccentric orbit around a Schwarzschild black hole. Physical Review D, 81(8), 84021. DOI: 10.1103/PhysRevD.81.084021
Barack, L., Damour, T., & Sago, N. (2010). Precession effect of the gravitational self-force in a Schwarzschild spacetime and the effective one-body formalism. Physical Review D, 82(8), 84036. DOI: 10.1103/PhysRevD.82.084036
Warburton, N., & Barack, L. (2010). Self force on a scalar charge in Kerr spacetime: circular equatorial orbits. Physical Review D, 81(8), 84039. DOI: 10.1103/PhysRevD.81.084039
Barack, L. (2009). Gravitational self force in extreme mass-ratio inspirals. Classical and Quantum Gravity, 26(21), 213001-213056. DOI: 10.1088/0264-9381/26/21/213001
Barack, L., & Sago, N. (2009). Gravitational self-force correction to the innermost stable circular orbit of a Schwarzschild black hole. Physical Review Letters, 102(19), 1-4. DOI: 10.1103/PhysRevLett.102.191101
Gair, J., Porter, E., Babak, S., & Barack, L. (2008). A constrained metropolis-hastings search for EMRIs in the mock LISA data challenge 1B. Classical and Quantum Gravity, 25, 184030.
Barack, L., Ori, A., & Sago, N. (2008). Frequency-domain calculation of the self-force: the high-frequency problem and its resolution. Physical Review D, 78, 1-16. DOI: 10.1103/PhysRevD.78.084021
Babak, S., Baker, J. G., Benaquista, M. J., Cornish, J. C., Crowder, J., Cutler, C., ... Woan, G. (2008). Report on the second Mock LISA Data Challenge. Classical and Quantum Gravity, 25(11), 114037-[8pp]. DOI: 10.1088/0264-9381/25/11/114037
Sago, N., Barack, L., & Detweiler, S. (2008). Two approaches for the gravitational self force in black hole spacetime: comparison of numerical results. Physical Review D, 78(12), 124024-[9pp]. DOI: 10.1103/PhysRevD.78.124024
Barack, L., & Sago, N. (2007). Gravitational self force on a particle in circular orbit around a Schwarzschild black hole. Physical Review D, 75(6), 064021-[25pp]. DOI: 10.1103/PhysRevD.75.064021
Barack, L., Golbourn, D. A., & Sago, N. (2007). M-mode regularization scheme for the self force in Kerr Spacetime. Physical Review D, 76(124036), 1-17.
Barack, L., & Golbourn, D. A. (2007). Scalar-field perturbations from a particle orbiting a black hole using numerical evolution in 2+1 dimensions. Physical Review D, 76(44020).
Barack, L., & Cutler, C. (2007). Using LISA EMRI sources to test off-Kerr deviations in the geometry of massive black holes. Physical Review D, 75(4), 042003-[11pp]. DOI: 10.1103/PhysRevD.75.042003
Barack, L., & Lousto, C. O. (2005). Perturbations of Schwarzschild black holes in the Lorenz gauge: formulation and numerical implementation. Physical Review D, 72(10), 104026-[25pp]. DOI: 10.1103/PhysRevD.72.104026
Barack, L., & Cutler, C. (2004). Confusion noise from LISA capture sources. Physical Review D, 70, 122002-[21pp]. DOI: 10.1103/PhysRevD.70.122002
Gair, J. R., Barack, L., Creighton, T., Cutler, C., Larson, S. L., Phinney, E. S., & Vallisneri, M. (2004). Event rate estimates for LISA extreme mass ratio capture sources. Classical and Quantum Gravity, 21, S1595-S1606. DOI: 10.1088/0264-9381/21/20/003
Barack, L., & Cutler, C. (2004). LISA capture sources: approximate waveforms, signal-to-noise ratios, and parameter estimation accuracy. Physical Review D, 69(8), 082005-[24pp]. DOI: 10.1103/PhysRevD.69.082005
Barack, L., & Ori, A. (2003). Gravitational self-force on a particle orbiting a Kerr black hole. Physical Review Letters, 90(11), 111101-[4pp]. DOI: 10.1103/PhysRevLett.90.111101
Barack, L., & Ori, A. (2003). Regularization parameters for the self force in Schwarzschild spacetime: II. gravitational and electromagnetic cases. Physical Review D, 67(2), 024029-[11pp]. DOI: 10.1103/PhysRevD.67.024029
Barack, L., Mino, Y., Nakano, H., Ori, A., & Sasaki, M. (2002). Calculating the gravitational self-force in Schwarzschild spacetime. Physical Review Letters, 88(9), 091101-[4pp]. DOI: 10.1103/PhysRevLett.88.091101
Barack, L., & Lousto, C. O. (2002). Computing the gravitational self-force on a compact object plunging into a Schwarzschild black hole. Physical Review D, 66(6), 061502-[5pp]. DOI: 10.1103/PhysRevD.66.061502
Barack, L., & Ori, A. (2002). Regularization parameters for the self-force in Schwarzschild spacetime: scalar case. Physical Review D, 66(8), 084022-[15pp]. DOI: 10.1103/PhysRevD.66.084022
Barack, L., & Ori, A. (2001). Gravitational self force and gauge transformations. Physical Review D, 64(12), 124003-[13pp]. DOI: 10.1103/PhysRevD.64.124003
Barack, L. (2001). Gravitational self force by mode sum regularization. Physical Review D, 64(8), 084021-[16pp]. DOI: 10.1103/PhysRevD.64.084021
Barack, L. (2000). Late time decay of scalar, electromagnetic, and gravitational perturbations outside rotating black holes. Physical Review D, 61(24026), 27pp. DOI: 10.1103/PhysRevD.61.024026
Barack, L., & Ori, A. (2000). Mode sum regularization approach for the self-force in black hole spacetime. Physical Review D, 61(61502), 5pp. DOI: 10.1103/PhysRevD.61.061502
Barack, L., & Burko, L. M. (2000). Radiation-reaction force on a particle plunging into a black hole. Physical Review D, 62(84040), 5pp. DOI: 10.1103/PhysRevD.62.084040
Barack, L. (2000). Self-force on a scalar particle in spherically-symmetric spacetime via mode-sum regularization: radial trajectories. Physical Review D, 62(84027), 21pp. DOI: 10.1103/PhysRevD.62.084027
Barack, L. (1999). Late time dynamics of scalar perturbations outside black holes: I. A shell toy-model. Physical Review D, 59(44016), 20pp. DOI: 10.1103/PhysRevD.59.044016
Barack, L. (1999). Late time dynamics of scalar perturbations outside black holes: II. Schwarzschild geometry. Physical Review D, 59(44017), 17pp. DOI: 10.1103/PhysRevD.59.044017
Barack, L., & Ori, A. (1999). Late-time decay of gravitational and electromagnetic perturbations along the event horizon. Physical Review D, 60(124005), 16pp. DOI: 10.1103/PhysRevD.60.124005
Barack, L., & Ori, A. (1999). Late-time decay of scalar perturbations outside rotating black holes. Physical Review Letters, 82(22), 4388-4391. DOI: 10.1103/PhysRevLett.82.4388

Book Chapter

Barack, L. (2011). Computational methods for the self force in black hole spacetimes. In L. Blanchet, A. Spallicci, & B. Whiting (Eds.), Mass and motion in general relativity (pp. 327-366). New York, USA: Springer.

Professor Leor Barack
B54/2007
Mathematical Sciences,
University of Southampton
Southampton
SO17 1BJ

Phone: +44-23 8059 5134
Email: L.Barack@southampton.ac.uk

Room Number:54/2007

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