Issue |
A&A
Volume 368, Number 3, March IV 2001
|
|
---|---|---|
Page(s) | 1055 - 1062 | |
Section | Interstellar and circumstellar matter | |
DOI | https://doi.org/10.1051/0004-6361:20010074 | |
Published online | 15 March 2001 |
Scintillation measurements of the millisecond pulsar PSR J0030+0451 and pulsar space velocities
1
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, nicastro@ifcai.pa.cnr.it
Received:
6
December
2000
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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