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| dc.contributor | Universitat Politècnica de Catalunya. Departament de Física Aplicada |
|---|---|
| dc.contributor | Universitat Politècnica de Catalunya. CTE-CRAE - Grup de Recerca en Ciències i Tecnologies de l'Espai |
| dc.contributor | Universitat Politècnica de Catalunya. GAA - Grup d'Astronomia i Astrofísica |
| dc.contributor.author | Rueda, Jorge A. |
| dc.contributor.author | Boshkayev, K. |
| dc.contributor.author | Izzo, L. |
| dc.contributor.author | Ruffini, R. |
| dc.contributor.author | Lorén Aguilar, Pablo |
| dc.contributor.author | Kuelebi, B. |
| dc.contributor.author | Aznar Siguan, Gabriela |
| dc.contributor.author | García-Berro Montilla, Enrique |
| dc.date | 2013-08 |
| dc.identifier.citation | Rueda, 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.citation | 2041-8205 |
| dc.identifier.citation | 10.1088/2041-8205/772/2/L24 |
| dc.identifier.uri | http://hdl.handle.net/2117/20466 |
| dc.description.abstract | It 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.language.iso | eng |
| dc.relation | http://iopscience.iop.org/2041-8205/772/2/L24 |
| dc.rights | Attribution-NonCommercial-NoDerivs 3.0 Spain |
| dc.rights | info:eu-repo/semantics/openAccess |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/3.0/es/ |
| dc.subject | Àrees temàtiques de la UPC::Física::Astronomia i astrofísica |
| dc.subject | White dwarf stars |
| dc.subject | pulsars-general |
| dc.subject | pulsars-individual (4U 0142+61) |
| dc.subject | stars-magnetic field |
| dc.subject | stars-rotation |
| dc.subject | white dwarfs |
| dc.subject | t tauri stars |
| dc.subject | neutron-stars |
| dc.subject | 4u-0142+61 |
| dc.subject | accretion |
| dc.subject | extinction |
| dc.subject | supernova evolution |
| dc.subject | repeaters model disks |
| dc.subject | Astronomy & Astrophysics |
| dc.subject | Estels nans |
| dc.title | A white dwarf merger as progenitor of the anomalous X-Ray pulsar 4U 0142+61? |
| dc.type | info:eu-repo/semantics/publishedVersion |
| dc.type | info:eu-repo/semantics/article |
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