Why old Pulsars do not Glitch often
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Date
2014-06
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Addis Ababa University
Abstract
Some pulsars are stable in the universe, even though, many of them glitch i.e. their
spin frequencies increase suddenly. Young pulsars, such as the crab pulsar glitch within
short period of time i.e. they glitch within a few years. However, old pulsars do not
glitch as such. This thesis tries to analyze the causes behind these glitches and why
their frequencies decrease with the ages of pulsars. We study the gravitational tidal
force interaction between the core and the crust and employs its e ect on the long term
evolution of pulsar glitches. In particular, we have shown that old pulsars show less
glitches proportional to their ages and also we derived the time at which the crust and
the core of neutron star will be tidally locked.
Key Words: star: neutron star, pulsars: general, glitch: pulsar , tidal interaction
Description
Keywords
star, Neutron star, Pulsars, General, Glitch, Pulsar, Tidal Interaction