Volume 368, Number 3, March IV 2001
|Page(s)||1055 - 1062|
|Section||Interstellar and circumstellar matter|
|Published online||15 March 2001|
Scintillation measurements of the millisecond pulsar PSR J0030+0451 and pulsar space velocities
Istituto di Fisica Cosmica con Applicazioni all'Informatica, CNR, Via U. La Malfa 153, 90146 Palermo, Italy
2 Osservatorio Astronomico di Bologna, Via Ranzani 1, 40127 Bologna, Italy
3 Dipartimento di Astronomia, Università degli Studi di Bologna, Via Ranzani 1, 40127 Bologna, Italy
4 Research Centre for Theoretical Astrophysics, University of Sydney, NSW 2006, Australia
Corresponding author: L. Nicastro, email@example.com
Accepted: 12 January 2001
Scintillation observations of the nearby single millisecond pulsar (MSP) PSR J0030+0451 were carried out with the Parkes 64 m radiotelescope at three different epochs in 1999. From analysis of the dynamic spectrum we obtained the amplitude of the electron density power spectrum and a scintillation velocity km s-1. This result shows that the Shklovskii effect on the spin-down rate is negligible. We also performed a correlation analysis between pulsar proper motions (Vpm) and scintillation velocities (Viss) using updated measurements for a sample of 77 objects, 17 of which are MSPs. The full sample shows a correlation coefficient at an extremely high significance level, while for the MSP sub-sample (excluding 2 outliers) we obtain .
Key words: stars: kinematics / pulsars: individual: PSR J0030+0451 / ISM: general / ISM: kinematics and dynamics / ISM: structure / radio continuum: stars
© ESO, 2001
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