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Article: Birth kick distributions and the spin-kick correlation of young pulsars

TitleBirth kick distributions and the spin-kick correlation of young pulsars
Authors
KeywordsPulsars: General
Stars: Rotation
Supemovae: General
Issue Date2007
PublisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637X
Citation
Astrophysical Journal, 2007, v. 660 n. 2 I, p. 1357-1374 How to Cite?
AbstractEvidence from pulsar wind nebula symmetry axes and radio polarization observations suggests that pulsar motions correlate with the spin directions. We assemble this evidence for young isolated pulsars and show how it can be used to quantitatively constrain birth kick scenarios. We illustrate by computing several plausible, but idealized, models where the momentum thrust is proportional to the neutrino cooling luminosity of the proto-neutron star. Our kick simulations include the effects of pulsar acceleration and spin-up and our maximum likelihood comparison with the data constrains the model parameters. The fit to the pulsar spin and velocity measurements suggests that (1) the anisotropic momentum required amounts to ∼10% of the neutrino flux, (2) while a prekick spin of the star is required, the preferred magnitude is small 10-20 rad s -1, so that for the best-fit models (3) the bulk of the spin is kick-induced with Ω̄ ∼ 120 rad s -1 and (4) the models suggest that the anisotropy emerges on a timescale τ ∼ 1-3 s. © 2007. The American Astronomical Society. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/180485
ISSN
2015 Impact Factor: 5.909
2015 SCImago Journal Rankings: 3.266
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorNg, CYen_US
dc.contributor.authorRomani, RWen_US
dc.date.accessioned2013-01-28T01:38:45Z-
dc.date.available2013-01-28T01:38:45Z-
dc.date.issued2007en_US
dc.identifier.citationAstrophysical Journal, 2007, v. 660 n. 2 I, p. 1357-1374en_US
dc.identifier.issn0004-637Xen_US
dc.identifier.urihttp://hdl.handle.net/10722/180485-
dc.description.abstractEvidence from pulsar wind nebula symmetry axes and radio polarization observations suggests that pulsar motions correlate with the spin directions. We assemble this evidence for young isolated pulsars and show how it can be used to quantitatively constrain birth kick scenarios. We illustrate by computing several plausible, but idealized, models where the momentum thrust is proportional to the neutrino cooling luminosity of the proto-neutron star. Our kick simulations include the effects of pulsar acceleration and spin-up and our maximum likelihood comparison with the data constrains the model parameters. The fit to the pulsar spin and velocity measurements suggests that (1) the anisotropic momentum required amounts to ∼10% of the neutrino flux, (2) while a prekick spin of the star is required, the preferred magnitude is small 10-20 rad s -1, so that for the best-fit models (3) the bulk of the spin is kick-induced with Ω̄ ∼ 120 rad s -1 and (4) the models suggest that the anisotropy emerges on a timescale τ ∼ 1-3 s. © 2007. The American Astronomical Society. All rights reserved.en_US
dc.languageengen_US
dc.publisherInstitute of Physics Publishing Ltd. The Journal's web site is located at http://iopscience.iop.org/0004-637Xen_US
dc.relation.ispartofAstrophysical Journalen_US
dc.subjectPulsars: Generalen_US
dc.subjectStars: Rotationen_US
dc.subjectSupemovae: Generalen_US
dc.titleBirth kick distributions and the spin-kick correlation of young pulsarsen_US
dc.typeArticleen_US
dc.identifier.emailNg, CY: stephen_ng@hku.hken_US
dc.identifier.authorityNg, CY=rp01706en_US
dc.description.naturelink_to_OA_fulltexten_US
dc.identifier.doi10.1086/513597en_US
dc.identifier.scopuseid_2-s2.0-34249871392en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-34249871392&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume660en_US
dc.identifier.issue2 Ien_US
dc.identifier.spage1357en_US
dc.identifier.epage1374en_US
dc.identifier.isiWOS:000246571300040-
dc.publisher.placeUnited Kingdomen_US
dc.identifier.scopusauthoridNg, CY=24830903500en_US
dc.identifier.scopusauthoridRomani, RW=35248859100en_US
dc.customcontrol.immutablejt 130807-

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