General Relativity and Gravitation

, Volume 36, Issue 2, pp 293–301

Gravitomagnetic Measurement of the Angular Momentum of Celestial Bodies

  • A. Tartaglia
  • M. L. Ruggiero


The asymmetry in the time delay for light rays propagating on opposite sides of a spinning body is analyzed. A frequency shift in the perceived signals is found. A practical procedure is proposed for evidencing the asymmetry, allowing for a measurement of the specific angular momentum of the rotating mass. Orders of magnitude are considered and discussed.

Gravitomagnetism rotating source time delay 


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  1. [1]
    Shapiro, I. I. (1964). Phys. Rev. Lett. 13, 789.Google Scholar
  2. [2]
    Shapiro, I. I. (1966). Phys. Rev. 141, 1219.Google Scholar
  3. [3]
    Einstein, A. (1950). The Meaning of Relativity, Princeton University Press, Princeton, NewJersey.Google Scholar
  4. [4]
    Shapiro, I. I., Ash, M. E., Ingalls, R. P., Smith, W. B., Campbell, D. B., Dyce, R. B., Jurgens, R. F., and Pettengill, G. H. (1971). Phys. Rev. Lett. 26, 1132.Google Scholar
  5. [5]
    Anderson, J. D., Esposito, P. B., Martin, W., Thornton, C. L., and Muhleman, D. O. (1975). Astrophys. J. 200, 221.Google Scholar
  6. [6]
    Shapiro, I. I., Reasenberg, R. D., MacNeil, P. E., Goldstein, R. B., Brenkle, J. P., Cain, D. L., Komarek, T., Zygielbaum, A. I., Cuddihy, W. F., and Michael, W. H., Jr. (1977). J. Geophys. Res. 82, 4329.Google Scholar
  7. [7]
    Reasenberg, R. D., Shapiro, I. I., MacNeil, P. E., Goldstein, R. B., Breidenthal, J. C., Brenkle, J. B., Cain, D. L., Kaufman, T. M., Komarek, T. A., and Zygielbaum, A. I. (1979). Astrophys. J. 234, L219.Google Scholar
  8. [8]
    Ciufolini, I., and Ricci, F. (2002). Class. Quant. Grav. 19, 3863.Google Scholar
  9. [9]
    Straumann, N. (1988). General Relativity and Relativistic Astrophysics, Springer-Verlag, Berlin, 184 p.Google Scholar
  10. [10]
    Ohanian, H. C., and Ruffini, R. (1994). Gravitation and Spacetime, W.W. Norton and Company, New York.Google Scholar
  11. [11]
    Ruggiero, M. L., and Tartaglia, A. (2002). Nuovo Cimento B 117, 743 (gr-qc/0207065). _Google Scholar
  12. [13]
    [12] Davies, R.W. (1974). In Proceedings of the LVI School of Physics Enrico Fermi, B. Bertotti (Ed.), Academic Press, New York, 405 p.Google Scholar
  13. [13]
    Bertotti, B., and Giampieri, G. (1992). Class. Quant. Grav. 9, 777.Google Scholar

Copyright information

© Plenum Publishing Corporation 2004

Authors and Affiliations

  • A. Tartaglia
    • 1
  • M. L. Ruggiero
    • 1
  1. 1.Dip. FisicaPolitecnico, and INFNTorinoItaly

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