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The pulsar kick velocity distribution

Hansen, Brad M. S. and Phinney, E. Sterl (1997) The pulsar kick velocity distribution. Monthly Notices of the Royal Astronomical Society, 291 (3). pp. 569-577. ISSN 0035-8711. doi:10.1093/mnras/291.3.569.

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We analyse the sample of pulsar proper motions, taking detailed account of the selection effects of the original surveys. We treat censored data using survival statistics. From a comparison of our results with Monte Carlo simulations, we find that the mean birth speed of a pulsar is ~250-300 km s^(-1), rather than the 450 km s^(+1) found by Lyne & Lorimer. The resultant distribution is consistent with a Maxwellian with dispersion σ_v = 190 km s^(-1) . Despite the large birth velocities, we find that the pulsars with long characteristic ages show the asymmetric drift, indicating that they are dynamically old. These pulsars may result from the low-velocity tail of the younger population, although modified by their origin in binaries and by evolution in the galactic potential.

Item Type:Article
Related URLs:
URLURL TypeDescription Paper
Hansen, Brad M. S.0000-0001-7840-3502
Phinney, E. Sterl0000-0002-9656-4032
Additional Information:© 1997 RAS. Accepted 1997 June 30. Received 1997 June 30; in original form 1996 November 1. This work was supported by NSF grant AST93-15455 and NASA grant NAG5-2756. We would like to thank the referee Philipp Podsiadlowski for comments on the original manuscript.
Funding AgencyGrant Number
NSFAST 93-15455
Subject Keywords:methods: statistical - stars: kinematics - pulsars: general
Issue or Number:3
Record Number:CaltechAUTHORS:20190205-142100363
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Official Citation:Brad M. S. Hansen, E. Sterl Phinney; The pulsar kick velocity distribution, Monthly Notices of the Royal Astronomical Society, Volume 291, Issue 3, 1 November 1997, Pages 569–577,
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:92690
Deposited By: George Porter
Deposited On:05 Feb 2019 22:52
Last Modified:16 Nov 2021 03:52

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