Millisecond Pulsar Velocities

Details Millisecond Pulsar Velocities Millisecond Pulsar Velocities

1998-11-25

arxiv.org/abs/astro-ph/9811398v1

Astronomy and Astrophysics

Astrophysics

10 pages LaTeX including 2 LaTeX tables and 3 postscript figures; submitted to MNRAS

Scientific paper

10.1046/j.1365-8711.1999.02685.x

We present improved timing parameters for 13 millisecond pulsars (MSPs) including 9 new proper motion measurements. These new proper motions bring to 23 the number of MSPs with measured transverse velocities. In light of these new results we present and compare the kinematic properties of MSPs with those of ordinary pulsars. The mean transverse velocity of MSPs was found to be 85+/-13 km/s; a value consistent with most models for the origin and evolution of MSPs and approximately a factor of four lower than that of ordinary pulsars. We also find that, in contrast to young ordinary pulsars, the vast majority of which are moving away from the Galactic plane, almost half of the MSPs are moving towards the plane. This near isotropy would be expected of a population that has reached dynamic equilibrium. Accurate measurements of MSP velocities have allowed us to correct their measured spin-down rates for Doppler acceleration effects, and thereby derive their intrinsic magnetic field strengths and characteristic ages. We find that close to half of our sample of MSPs have a characteristic age comparable to or greater than the age of the Galaxy.

Affiliated with

Also associated with

No associations

Rating

Millisecond Pulsar Velocities does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Millisecond Pulsar Velocities, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Millisecond Pulsar Velocities will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-458554