Redefining Millisecond Pulsar Ages!

Details Redefining Millisecond Pulsar Ages! Redefining Millisecond Pulsar Ages!

May 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009aas...21442902k&link_type=abstract

American Astronomical Society, AAS Meeting #214, #429.02; Bulletin of the American Astronomical Society, Vol. 41, p.699

Physics

Scientific paper

The only method to estimate pulsar ages, in the absence of additional constraints from the companion or remnant, has been to calculate the "characteristic or spin-down age". Whilst the spin-down age may give realistic values for normal pulsars, it can fail for pulsars with very short periods due to a multitude of factors.
We show that this generic method can significantly be improved to achieve estimates closer to the true age as the spin-down age may over- or under-estimate the age of the millisecond pulsar by more than a factor of 10. Here, we propose a new method to estimate millisecond pulsar ages that parametrically incorporates evolutionary constraints and relevant physics limiting the two main observables, ie. P-Pdot. We will elaborate on this new technique, the implications and potential solutions it offers to long lasting fundamental problems regarding millisecond pulsar evolution and the underlying age distribution.

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