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dc.contributor.authorRueda, Jorge A.
dc.contributor.authorBoshkayev, K.
dc.contributor.authorIzzo, L.
dc.contributor.authorRuffini, R.
dc.contributor.authorLorén Aguilar, Pablo
dc.contributor.authorKuelebi, B.
dc.contributor.authorAznar Siguan, Gabriela
dc.contributor.authorGarcía-Berro Montilla, Enrique
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Física Aplicada
dc.date.accessioned2013-10-25T13:20:04Z
dc.date.available2013-10-25T13:20:04Z
dc.date.created2013-08
dc.date.issued2013-08
dc.identifier.citationRueda, J.A. [et al.]. A white dwarf merger as progenitor of the anomalous X-Ray pulsar 4U 0142+61?. "The astrophysical journal letters", Agost 2013, vol. 772, núm. 2, p. 1-4.
dc.identifier.issn2041-8205
dc.identifier.urihttp://hdl.handle.net/2117/20466
dc.description.abstractIt has been recently proposed that massive, fast-rotating, highly magnetized white dwarfs could describe the observational properties of some of soft gamma-ray repeaters and anomalous X-ray pulsars (AXPs). Moreover, it has also been shown that high-field magnetic white dwarfs can be the outcome of white dwarf binary mergers. The products of these mergers consist of a hot central white dwarf surrounded by a rapidly rotating disk. Here we show that the merger of a double degenerate system can explain the characteristics of the peculiar AXP 4U 0142+61. This scenario accounts for the observed infrared excess. We also show that the observed properties of 4U 0142+6 are consistent with an approximately 1.2 M ¿ white dwarf, remnant of the coalescence of an original system made of two white dwarfs of masses 0.6 M ¿ and 1.0 M ¿. Finally, we infer a post-merging age tWD ˜ 64 kyr and a magnetic field B ˜ 2 × 108 G. Evidence for such a magnetic field may come from the possible detection of the electron cyclotron absorption feature observed between the B and V bands at ˜1015 Hz in the spectrum of 4U 0142+61.
dc.format.extent4 p.
dc.language.isoeng
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.subjectÀrees temàtiques de la UPC::Física::Astronomia i astrofísica
dc.subject.lcshWhite dwarf stars
dc.subject.otherpulsars-general
dc.subject.otherpulsars-individual (4U 0142+61)
dc.subject.otherstars-magnetic field
dc.subject.otherstars-rotation
dc.subject.otherwhite dwarfs
dc.subject.othert tauri stars
dc.subject.otherneutron-stars
dc.subject.other4u-0142+61
dc.subject.otheraccretion
dc.subject.otherextinction
dc.subject.othersupernova evolution
dc.subject.otherrepeaters model disks
dc.subject.otherAstronomy & Astrophysics
dc.titleA white dwarf merger as progenitor of the anomalous X-Ray pulsar 4U 0142+61?
dc.typeArticle
dc.subject.lemacEstels nans
dc.contributor.groupUniversitat Politècnica de Catalunya. CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai
dc.contributor.groupUniversitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica
dc.identifier.doi10.1088/2041-8205/772/2/L24
dc.relation.publisherversionhttp://iopscience.iop.org/2041-8205/772/2/L24
dc.rights.accessOpen Access
local.identifier.drac12774162
dc.description.versionPostprint (published version)
local.citation.authorRueda, J.A.; Boshkayev , K.; Izzo, L.; Ruffini, R.; Loren, P.; Kuelebi, B.; Aznar, G.; Garcia-berro, E.
local.citation.publicationNameThe astrophysical journal letters
local.citation.volume772
local.citation.number2
local.citation.startingPage1
local.citation.endingPage4


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