An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system (Articolo in rivista)

Type
Label
  • An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system (Articolo in rivista) (literal)
Anno
  • 2003-01-01T00:00:00+01:00 (literal)
Alternative label
  • Burgay, M. 1; D'Amico, N. 2; Possenti, A. 3 ; Manchester, R. N. 4; Lyne, A. G. 5; Joshi, B. C. 5; McLaughlin, M. A. 5; Kramer, M. 5; Sarkissian, J. M. 4; Camilo, F. 6; et al. (2003)
    An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system
    in Nature (Lond.)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Burgay, M. 1; D'Amico, N. 2; Possenti, A. 3 ; Manchester, R. N. 4; Lyne, A. G. 5; Joshi, B. C. 5; McLaughlin, M. A. 5; Kramer, M. 5; Sarkissian, J. M. 4; Camilo, F. 6; et al. (literal)
Pagina inizio
  • 531 (literal)
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  • 426 (literal)
Rivista
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  • Il lavoro riporta la scoperta di una pulsar binaria con periodo di rotazione di 2.4 ore. Si e' stimato che il tempo di merger fra le due stelle di neutroni del sistema e' di soli 85 milioni di anni. Tale scoperta pubblicata sulla rivista Nature ha avuto grande risonanza sui media cartacei ed elettronici sia nazionali che internazionali. (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1 Università degli Studi di Bologna, Dipartimento di Astronomia 2 Università degli Studi di Cagliari, Dipartimento di Fisica 3 Osservatorio Astronomico di Cagliari - INAF 4 Australia Telescope National Facility, CSIRO 5 University of Manchester, Jodrell Bank Observatory, Macclesfield 6 Columbia Astrophysics Laboratory, Columbia University (literal)
Titolo
  • An increased estimate of the merger rate of double neutron stars from observations of a highly relativistic system (literal)
Abstract
  • The merger of close binary systems containing two neutron stars should produce a burst of gravitational waves, as predicted by the theory of general relativity. A reliable estimate of the double-neutron-star merger rate in the Galaxy is crucial in order to predict whether current gravity wave detectors will be successful in detecting such bursts. Present estimates of this rate are rather low, because we know of only a few double-neutron-star binaries with merger times less than the age of the Universe. Here we report the discovery of a 22-ms pulsar, PSR J0737-3039, which is a member of a highly relativistic double-neutron-star binary with an orbital period of 2.4 hours. This system will merge in about 85Myr, a time much shorter than for any other known neutron-star binary. Together with the relatively low radio luminosity of PSR J0737-3039, this timescale implies an order-of-magnitude increase in the predicted merger rate for double-neutron-star systems in our Galaxy (and in the rest of the Universe). (literal)
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