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Il Nuovo Cimento C

, Volume 8, Issue 4, pp 410–414 | Cite as

An analysis of pulsar timing irregularities: is it induced by a source of gravitational waves in the galaxy?

  • M. Cerdonio
  • S. Vitale
Article
  • 14 Downloads

Summary

A statistical analysis of the irregularities in the pulse arrival times for the some 30 pulsars, for which the timing noise measurements are available, indicates that, at a confidence level of 96%, the timing noise is induced by a hypothetical source within our Galaxy. The source would be located at 08 h 38 min right ascension, −3° declination and 0.9 kpc distance from the solar system. We suggest and discuss the possibility that the interaction between the «source» and the pulsars is due to gravitational waves, emitted in bursts by the hypothetical source with yearly rate over the past 105 years.

PACS. 94.40

Cosmic rays 

PACS. 97.60

Late stages of stellar evolution (including black holes) 

PACS. 04.80

Experimental test of general relativity and observation of gravitational radiation 

Riassunto

Un'analisi statistica delle irregolarità nei tempi di arrivo degli impulsi per circa 30 pulsars indica che, ad un livello di confidenza del 96%, il rumore nei tempi di arrivo è indotto da un'ipotetica sorgente nella galassia. La sorgente sarebbe localizzata a 08 h 38 min di ascensione retta, −3° di declinazione e 0.9 kpc di distanza dal sistema solare. Suggeriamo e discutiamo la possibilità che l'interazione tra la «sorgente» e le pulsar sia dovuta a onde gravitazionali, da essa emesse nell'arco degli ultimi 105 anni.

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Copyright information

© Società Italiana di Fisica 1985

Authors and Affiliations

  • M. Cerdonio
    • 1
  • S. Vitale
    • 1
  1. 1.Dipartimento di Fisica dell'UniversitàTrentoItalia

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