AbstractObservations show that almost all pulsars exhibit measurable departures from the cubic law predicted for the slow down. This has been largely attributed to rotational irregularities – timing noise, glitches, and precession. Here, we present an analysis of ‘reliable’ frequency second-derivative for 262 radio pulsars having characteristic ages ∼103–1010yr and periods in the range ∼1.6ms to 4s. We find a high degree of correlation between the value predicted by dipole braking mechanism, ν ¨ dipole , and the measured value, ν ¨ . We argue that the relationship is suggestive of some other systematic process(es) in the pulsar spin-down in addition to the magnetic dipole mechanism and the timing noise. Based on this relationship we are able to quantify the rate of instability in radio pulsars.


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    Title :

    Radio pulsar spin-down stability


    Contributors:

    Published in:

    Advances in Space Research ; 40 , 10 ; 1517-1521


    Publication date :

    2007-01-25


    Size :

    5 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




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