Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/122845
Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Zabalza de Torres, Víctor | - |
dc.contributor.author | Bosch i Ramon, Valentí | - |
dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.date.accessioned | 2018-06-07T14:59:15Z | - |
dc.date.available | 2018-06-07T14:59:15Z | - |
dc.date.issued | 2011-12-10 | - |
dc.identifier.issn | 0004-637X | - |
dc.identifier.uri | http://hdl.handle.net/2445/122845 | - |
dc.description.abstract | Gamma-ray loud X-ray binaries are binary systems that show non-thermal broadband emission from radio to gamma rays. If the system comprises a massive star and a young non-accreting pulsar, their winds will collide producing broadband non-thermal emission, most likely originated in the shocked pulsar wind. Thermal X-ray emission is expected from the shocked stellar wind, but until now it has neither been detected nor studied in the context of gamma-ray binaries. We present a semi-analytic model of the thermal X-ray emission from the shocked stellar wind in pulsar gamma-ray binaries, and find that the thermal X-ray emission increases monotonically with the pulsar spin-down luminosity, reaching luminosities of the order of 10^33 erg/s. The lack of thermal features in the X-ray spectrum of gamma-ray binaries can then be used to constrain the properties of the pulsar and stellar winds. By fitting the observed X-ray spectra of gamma-ray binaries with a source model composed of an absorbed non-thermal power law and the computed thermal X-ray emission, we are able to derive upper limits on the spin-down luminosity of the putative pulsar. We applied this method to LS 5039, the only gamma-ray binary with a radial, powerful wind, and obtain an upper limit on the pulsar spin-down luminosity of ~6x10^36 erg/s. Given the energetic constraints from its high-energy gamma-ray emission, a non-thermal to spin-down luminosity ratio very close to unity may be required. | - |
dc.format.extent | 9 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Institute of Physics (IOP) | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1088/0004-637X/743/1/7 | - |
dc.relation.ispartof | Astrophysical Journal, 2011, vol. 743, num. 7 | - |
dc.relation.uri | https://doi.org/10.1088/0004-637X/743/1/7 | - |
dc.rights | (c) American Astronomical Society, 2011 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Estels binaris de raigs X | - |
dc.subject.classification | Raigs gamma | - |
dc.subject.other | X-ray binaries | - |
dc.subject.other | Gamma rays | - |
dc.title | Thermal X-Ray emission from the shocked stellar wind of pulsar gamma-ray binaries | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 602763 | - |
dc.date.updated | 2018-06-07T14:59:15Z | - |
dc.relation.projectID | info:eu-repo/grantAgreement/EC/FP7/252463/EU//STUDYPHYSGRAYBIN | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) Publicacions de projectes de recerca finançats per la UE |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
602763.pdf | 515.32 kB | Adobe PDF | View/Open |
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.