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Article: Evolution of magnetic field and spin period in accreting neutron stars

TitleEvolution of magnetic field and spin period in accreting neutron stars
Authors
KeywordsStars: magnetic fields
Stars: neutron
Stars: rotation
Issue Date2000
PublisherE D P Sciences. The Journal's web site is located at http://www.aanda.org
Citation
Astronomy And Astrophysics, 2000, v. 361 n. 3, p. 1001-1004 How to Cite?
AbstractBased on the accretion-induced magnetic field decay model, in which a frozen field and an incompressible fluid are assumed, we obtain the following results: (1) an analytic relation between the magnetic field and spin period, if the fastness parameter of the accretion disk is neglected (The evolutionary tracks of accreting neutron stars in the P-B diagram in our model are different from the equilibrium period lines when the influence of the fastness parameter is taken into account.); (2) the theoretical minimum spin period of an accret-ing neutron star is max(1.1ms (ΔM/M ⊙) -1R 6 -5/14 I 45(M/M ⊙) -1/2, 1.1ms (M/M ⊙) -1/2 R 6 17/14) independent of the accretion rate (X-ray luminosity) but dependent on the total accretion mass, ΔM; however, the minimum magnetic field depends on the accretion rate; (3) the magnetic field strength decreases faster with time than does the period.
Persistent Identifierhttp://hdl.handle.net/10722/80832
ISSN
2014 Impact Factor: 4.378
2015 SCImago Journal Rankings: 2.446
References

 

DC FieldValueLanguage
dc.contributor.authorCheng, KSen_HK
dc.contributor.authorZhang, CMen_HK
dc.date.accessioned2010-09-06T08:10:46Z-
dc.date.available2010-09-06T08:10:46Z-
dc.date.issued2000en_HK
dc.identifier.citationAstronomy And Astrophysics, 2000, v. 361 n. 3, p. 1001-1004en_HK
dc.identifier.issn0004-6361en_HK
dc.identifier.urihttp://hdl.handle.net/10722/80832-
dc.description.abstractBased on the accretion-induced magnetic field decay model, in which a frozen field and an incompressible fluid are assumed, we obtain the following results: (1) an analytic relation between the magnetic field and spin period, if the fastness parameter of the accretion disk is neglected (The evolutionary tracks of accreting neutron stars in the P-B diagram in our model are different from the equilibrium period lines when the influence of the fastness parameter is taken into account.); (2) the theoretical minimum spin period of an accret-ing neutron star is max(1.1ms (ΔM/M ⊙) -1R 6 -5/14 I 45(M/M ⊙) -1/2, 1.1ms (M/M ⊙) -1/2 R 6 17/14) independent of the accretion rate (X-ray luminosity) but dependent on the total accretion mass, ΔM; however, the minimum magnetic field depends on the accretion rate; (3) the magnetic field strength decreases faster with time than does the period.en_HK
dc.languageengen_HK
dc.publisherE D P Sciences. The Journal's web site is located at http://www.aanda.orgen_HK
dc.relation.ispartofAstronomy and Astrophysicsen_HK
dc.subjectStars: magnetic fieldsen_HK
dc.subjectStars: neutronen_HK
dc.subjectStars: rotationen_HK
dc.titleEvolution of magnetic field and spin period in accreting neutron starsen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0004-6361&volume=361&spage=1001&epage=1004&date=2000&atitle=Evolution+of+Magnetic+Field+and+Spin+Period+in+Accreting+Neutron+Starsen_HK
dc.identifier.emailCheng, KS: hrspksc@hkucc.hku.hken_HK
dc.identifier.authorityCheng, KS=rp00675en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.scopuseid_2-s2.0-0009496518en_HK
dc.identifier.hkuros55905en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0009496518&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume361en_HK
dc.identifier.issue3en_HK
dc.identifier.spage1001en_HK
dc.identifier.epage1004en_HK
dc.publisher.placeFranceen_HK
dc.identifier.scopusauthoridCheng, KS=9745798500en_HK
dc.identifier.scopusauthoridZhang, CM=7405492355en_HK

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