The pulsar kick velocity distribution | Zendy

Bradley M. S. Hansen | Zendy; E. S. Phinney | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

The pulsar kick velocity distribution

Author(s) -

Bradley M. S. Hansen,

E. S. Phinney

Publication year - 1997

Publication title -

monthly notices of the royal astronomical society

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.058

H-Index - 383

eISSN - 1365-8711

pISSN - 0035-8711

DOI - 10.1093/mnras/291.3.569

Subject(s) - pulsar , physics , astrophysics , population , monte carlo method , velocity dispersion , dispersion (optics) , proper motion , astronomy , statistical physics , statistics , stars , galaxy , medicine , mathematics , optics , environmental health

We analyse the sample of pulsar proper motions, taking detailed account ofthe selection effects of the original surveys. We treat censored data usingsurvival statistics. From a comparison of our results with Monte Carlosimulations, we find that the mean birth speed of a pulsar is 250-300 km/s,rather than the 450 km/s foundby Lyne & Lorimer (1994). The resultantdistribution is consistent with a maxwellian with dispersion $ \sigma_v = 190km/s$. Despite the large birth velocities, we find that the pulsars with longcharacteristic ages show the asymmetric drift, indicating that they aredynamically old. These pulsars may result from the low velocity tail of theyounger population, although modified by their origin in binaries and byevolution in the galactic potential.Comment: Latex, 10 pages, and 11 postscript figures. Accepted by Monthly Notice

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research