Please use this identifier to cite or link to this item:
http://hdl.handle.net/2445/162273
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DC Field | Value | Language |
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dc.contributor.author | Del Palacio, S. | - |
dc.contributor.author | García, F. | - |
dc.contributor.author | Altamirano, Diego | - |
dc.contributor.author | Barbá, R. H. | - |
dc.contributor.author | Bosch i Ramon, Valentí | - |
dc.contributor.author | Corcoran, Michael F. | - |
dc.contributor.author | De Becker, M. | - |
dc.contributor.author | Hamaguchi, K. | - |
dc.contributor.author | Maíz Apellániz, J. | - |
dc.contributor.author | Munar i Adrover, Pere | - |
dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.contributor.author | Romero, Gustavo E. | - |
dc.contributor.author | Sana, H. | - |
dc.contributor.author | Tavani, M. | - |
dc.contributor.author | Ud-Doula, A. | - |
dc.date.accessioned | 2020-05-25T11:50:11Z | - |
dc.date.available | 2020-05-25T11:50:11Z | - |
dc.date.issued | 2020-05-01 | - |
dc.identifier.issn | 0035-8711 | - |
dc.identifier.uri | http://hdl.handle.net/2445/162273 | - |
dc.description.abstract | We conducted an observational campaign towards one of the most massive and luminous colliding wind binaries in the Galaxy, HD~93129A, close to its periastron passage in 2018. During this time the source was predicted to be in its maximum of high-energy emission. Here we present our data analysis from the X-ray satellites \textit{Chandra} and \textit{NuSTAR} and the γ-ray satellite \textit{AGILE}. High-energy emission coincident with HD~93129A was detected in the X-ray band up to ∼18~keV, whereas in the γ-ray band only upper limits were obtained. We interpret the derived fluxes using a non-thermal radiative model for the wind-collision region. We establish a conservative upper limit for the fraction of the wind kinetic power that is converted into relativistic electron acceleration, fNT,e<0.02. In addition, we set a lower limit for the magnetic field in the wind-collision region as BWCR>0.3~G. We also argue a putative interpretation of the emission from which we estimate fNT,e≈0.006 and BWCR≈0.5~G. We conclude that multi-wavelength, dedicated observing campaigns during carefully selected epochs are a powerful tool for characterising the relativistic particle content and magnetic field intensity in colliding wind binaries. | - |
dc.format.extent | 10 p. | - |
dc.format.mimetype | application/pdf | - |
dc.language.iso | eng | - |
dc.publisher | Royal Astronomical Society | - |
dc.relation.isformatof | Reproducció del document publicat a: https://doi.org/10.1093/mnras/staa1156 | - |
dc.relation.ispartof | Monthly Notices of the Royal Astronomical Society, 2020, vol. 494, num. 4, p. 6043-6052 | - |
dc.relation.uri | https://doi.org/10.1093/mnras/staa1156 | - |
dc.rights | (c) Del Palacio, S. et al., 2020 | - |
dc.source | Articles publicats en revistes (Física Quàntica i Astrofísica) | - |
dc.subject.classification | Acceleradors de partícules | - |
dc.subject.classification | Estels binaris de raigs X | - |
dc.subject.classification | Raigs gamma | - |
dc.subject.other | Particle accelerators | - |
dc.subject.other | X-ray binaries | - |
dc.subject.other | Gamma rays | - |
dc.title | The high-energy emission from HD 93129A near periastron | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 701055 | - |
dc.date.updated | 2020-05-25T11:50:12Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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701055.pdf | 666.77 kB | Adobe PDF | View/Open |
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