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dc.contributor.author
García, Federico
dc.contributor.author
Ranea Sandoval, Ignacio Francisco
dc.date.available
2016-09-07T19:25:55Z
dc.date.issued
2015-04
dc.identifier.citation
García, Federico; Ranea Sandoval, Ignacio Francisco; A simple mechanism for the anti-glitch observed in AXP 1E 2259+586; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 449; 1; 4-2015; 73-76
dc.identifier.issn
1745-3933
dc.identifier.uri
http://hdl.handle.net/11336/7534
dc.description.abstract
In this letter, we develop a simple internal mechanism that can account for the recent ?anti-glitch? observed for AXP 1E 2259+586 (|Δν/ν| ≳ 10− 7). We propose that the cumulative decay of the internal toroidal magnetic field component will eventually become large enough to turn an originally stable prolate stellar configuration into an unstable one. The subsequent rearrangement of the stellar structure will result in a sudden spin-down of the whole star. We present order-of-magnitude calculations to give confidence to this scenario, using a simple, but physically reasonable, analytical stellar model. We estimate the energy released by the proposed mechanism and show that it is in agreement with the observations. Based on this model, we predict that to achieve the observed sudden spin-down, a minimum magnetar-like value for the magnetic field strength is needed. Consequently, we do not expect this kind of anti-glitch activity to occur in normal pulsars.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Magnetic Fields
dc.subject
Stars: Neutron
dc.subject
X-Rays:Individual: 1e 2259+586
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
A simple mechanism for the anti-glitch observed in AXP 1E 2259+586
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2016-07-26T15:12:53Z
dc.journal.volume
449
dc.journal.number
1
dc.journal.pagination
73-76
dc.journal.pais
Reino Unido
dc.journal.ciudad
Oxford
dc.description.fil
Fil: García, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico la Plata. Instituto Argentino de Radioastronomia (i); Argentina. Universidad Nacional de la Plata. Facultad de Ciencias Astronómicas y Geofísicas; Argentina
dc.description.fil
Fil: Ranea Sandoval, Ignacio Francisco. Universidad Nacional de la Plata. Facultad de Cs.astronomicas y Geofisicas. Area Fisica Teorica; Argentina
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://mnrasl.oxfordjournals.org/content/449/1/L73.abstract
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnrasl/slv019
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