2011

Orbits in a non-Kerr Dynamical System

Contopoulos, G., Lukes-Gerakopoulos, G., Apostolatos, T. A.

Understand

We study the orbits in a Manko-Novikov type metric (MN) which is a perturbed Kerr metric.

  • There are periodic, quasi-periodic, and chaotic orbits, which are found in configuration space and on a surface of section for various values of the energy E and the z-component of the angular momentum Lz.
  • For relatively large Lz there are two permissible regions of non-plunging motion bounded by two closed curves of zero velocity (CZV), while in the Kerr metric there is only one closed CZV of non-plunging motion.
  • The inner permissible region of the MN metric contains mainly chaotic orbits, but it contains also a large island of stability.

Built on

  • Contopoulos, G. [1978], “Higher order resonances in dynamical systems”, Celest. Mech

    1978

    Earlier work this paper cites.

  • Contopoulos, G., & Zikides, M. [1980], “Periodic orbits and ergodic components of a resonant dynamical system”, Astron. and Astrop

    1980

    Earlier work this paper cites.

  • Contopoulos G., Varvoglis H. & Barbanis B. [1987], “Large degree stochasticity in a galactic model”, Astron. and Astrop

    1987

    Earlier work this paper cites.

  • Manko, V. S., & Novikov, I. D. [1992], “Generalizations of the Kerr and Kerr-Newman metrics possessing an arbitrary set of mass-multipole moments”, Class. Quant. Grav

    1992

    Earlier work this paper cites.

  • Bender, P.,Danzmann P., and the LISA Study Team [1998], “Laser Interferometer Space Antenna for the Detection of Gravitational Waves, Pre-Phase A Report” MPQ 233

    1998

    Earlier work this paper cites.

Similar

  • Contopoulos, G. [2002], “Order and chaos in dynamical astronomy” (Springer, Berlin)

    2002

    Cited alongside, same era.

  • Gair, J. R., & Glampedakis, K. [2006], “Improved approximate inspirals of test bodies into Kerr black holes” Phys. Rev. D

    2006

    Cited alongside, same era.

  • Flanagan, É. É., & Hinderer, T. [2007], “Evolution of the Carter constant for inspirals into a black hole: Effect of the black hole quadrupole”, Phys. Rev. D

    2007

    Cited alongside, same era.

  • Brink, J. [2008], “Spacetime encodings. II. Pictures of integrability”, Phys. Rev. D

    2008

    Cited alongside, same era.

  • Gair, J. R., Li, C., & Mandel, I. [2008], “Observable properties of orbits in exact bumpy spacetimes”, Phys. Rev. D

    2008

    Cited alongside, same era.

Then

  • Apostolatos, T. A., Lukes-Gerakopoulos, G., & Contopoulos, G. [2009], “How to Observe a Non-Kerr Spacetime Using Gravitational Waves”, Phys. Rev. Let

    2009

    Later among the works it cites.

  • Johannsen, T., & Psaltis, D. [2010], “Testing the No-hair Theorem with Observations in the Electromagnetic Spectrum. I. Properties of a Quasi-Kerr Spacetime”, Astrop. J

    2010

    Later among the works it cites.

  • Johannsen, T., & Psaltis, D. [2010], “Testing the No-hair Theorem with Observations in the Electromagnetic Spectrum. II. Black Hole Images”, Astrop. J

    2010

    Later among the works it cites.

  • Lukes-Gerakopoulos, G., Apostolatos, T. A., & Contopoulos, G. [2010], “Observable signature of a background deviating from the Kerr metric” Phys. Rev. D

    2010

    Later among the works it cites.

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