Il Nuovo Cimento C

, Volume 14, Issue 3, pp 235–250 | Cite as

Search for monochromatic sources with the GEOGRAV gravitational-wave antenna

  • S. Frasca
  • C. La Posta


The data of 46 months of the GEOGRAV gravitational-wave antenna are analysed to search for monochromatic Doppler-shifted signals from rotating neutron stars, in the frequency band (856.2÷859.2) Hz. Two different methods were used. With the first, the gravitational radiation from the whole sky is investigated and a limit ofh≤1·10−21 is found. With the second method only the radiation from a single source is searched. The Galactic Centre and the Large Magellanic Cloud are considered as sources and the limit ofh≤6·10−22 is found.

PACS 95.85

Astronomical observations 

PACS 04.80

Experimental tests of general relativity and observations of gravitational radiation 


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  1. [1]
    H. Hirakawa, T. Tsubono andM. K. Fujimoto:Phys. Rev. D,17, 1919 (1978);S. Owa, M. K. Fujimoto, H. Hirakawa, K. Morimoto, T. Suzuki andK. Tsubono: inExperimental Gravitational Physics, edited byP. F. Michelson (World Scientific Publishing, 1988), p. 397.CrossRefADSGoogle Scholar
  2. [2]
    J. Hough, R. W. P. Drever, H. Ward, A. J. Munley, G. P. Newton, B. J. Meers, S. Hoggan andG. A. Kerr:Nature (London),303, 216 (1983).CrossRefADSGoogle Scholar
  3. [3]
    J. Livas: inGravitational Wave Data Analysis, edited byB. F. Schutz (Kluwer Academic Publishers, 1989), p. 217.Google Scholar
  4. [4]
    N. Kawashima, S. Kawamura, J. Hirao, J. Mizuno andLi Yong-gui: inXII International Conference on General Relativity and Gravitation (Boulder, Colo., 1989).Google Scholar
  5. [5]
    P. F. Michelson andR. C. Taber:J. Appl. Phys.,52, 4313 (1981);M. Bassan:Nuovo Cimento C,7, 303 (1984);G. V. Pallottino andG. Pizzella:Nuovo Cimento C,7, 155 (1984).CrossRefADSGoogle Scholar
  6. [6]
    F. Bronzini, S. Frasca, G. Pizzella, G. V. Pallottino andG. Vannaroni:Nuovo Cimento C,8, 300 (1985).Google Scholar
  7. [7]
    S. Frasca andM. Gabellieri:Rev. Sci. Instrum.,60, 198 (1989).CrossRefADSGoogle Scholar
  8. [8]
    R. V. Wagoner:X International Conference on General Relativity and Gravitation, Padova 1983; Astrophys. J.,278, 345 (1984).Google Scholar
  9. [9]
    K. S. Thorne: in300 Years of Gravitation, edited byS. W. Hawking andW. Israel (Cambridge, 1987), p. 330.Google Scholar
  10. [10]
    S. Frasca:Nuovo Cimento C,3, 237 (1980).ADSGoogle Scholar
  11. [11]
    P. Bonifazi, V. Ferrari, S. Frasca, G. V. Pallottino andG. Pizzella:Nuovo Cimento C,1, 465 (1978).ADSGoogle Scholar
  12. [12]
    This can be done by a lock-in or by taking the square modulus of the Fourier transform.Google Scholar

Copyright information

© Società Italiana di Fisica 1991

Authors and Affiliations

  • S. Frasca
    • 1
  • C. La Posta
    • 1
  1. 1.Dipartimento di FisicaUniversità «La Sapienza»Roma

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