Very low breaking index for the Vela pulsar

Article Abstract:

Analysis of the rotation rate and the rate of change of the Vela pulsar observed over 25 years reveals a breaking index value of 1.4 plus or minus 0.2. The breaking appears to be due to a varying magnetic moment or effective moment of inertia rather than due to a constant magnetic dipole. The pulsar is probably older than believed and the deduced velocities of the supernova ejecta and an X-ray jet from the pulsar are lowered.

Supernova remnants

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Transient radio bursts from rotating neutron stars

Article Abstract:

A search for radio sources that vary on much shorter time scale than minutes to hours, which are eleven objects characterized by single, dispersed bursts having durations between bursts range from 2 and 30 ms are reported. This population is related to the classes of isolated neutron stars observed at X-ray and gamma-ray wavelengths.

United States, Observations, Observatories, Astronomical observatories, Radio sources (Astronomy), Radio sources (Astronomical bodies)

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Evidence for free precession in a pulsar

Article Abstract:

Research on the pulse of radio emission from the pulsar PSR B1828-11 is presented. Whilst the majority of pulsars have pulse shapes which are stable and slow down at a steady rate, this pulsar shows more variation.

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