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http://hdl.handle.net/2445/122838
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DC Field | Value | Language |
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dc.contributor.author | Bordas Coma, Pol | - |
dc.contributor.author | Bosch i Ramon, Valentí | - |
dc.contributor.author | Cañellas, A. | - |
dc.contributor.author | Moldón Vara, Francisco Javier | - |
dc.contributor.author | Munar i Adrover, Pere | - |
dc.contributor.author | Paredes i Poy, Josep Maria | - |
dc.contributor.author | Ribó Gomis, Marc | - |
dc.contributor.author | Zabalza de Torres, Víctor | - |
dc.date.accessioned | 2018-06-07T13:43:04Z | - |
dc.date.available | 2018-06-07T13:43:04Z | - |
dc.date.issued | 2011-07-01 | - |
dc.identifier.issn | 2041-8205 | - |
dc.identifier.uri | http://hdl.handle.net/2445/122838 | - |
dc.description.abstract | The acceleration of particles up to GeV or higher energies in microquasars has been the subject of considerable theoretical and observational efforts in the past few years. Sco X-1 is a microquasar from which evidence of highly energetic particles in the jet has been found when it is in the so-called Horizontal Branch (HB), a state when the radio and hard X-ray fluxes are higher and a powerful relativistic jet is present. Here we present the first very high energy gamma-ray observations of Sco X-1 obtained with the MAGIC telescopes. An analysis of the whole dataset does not yield a significant signal, with 95% CL flux upper limits above 300 GeV at the level of 2.4x10^{-12} ph/cm^2/s. Simultaneous RXTE observations were conducted to search for TeV emission during particular X-ray states of the source. A selection of the gamma-ray data obtained during the HB based on the X-ray colors did not yield a signal either, with an upper limit of 3.4x10^{-12} ph/cm^2/s. These upper limits place a constraint on the maximum TeV luminosity to non-thermal X-ray luminosity of L_{VHE}/L_{ntX}<0.02, that can be related to a maximum TeV luminosity to jet power ratio of L_{VHE}/L_{j}<10^{-3}. Our upper limits indicate that the underlying high-energy emission physics in Sco X-1 must be inherently different from that of the hitherto detected gamma-ray binaries. | - |
dc.format.extent | 5 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/10.1088/2041-8205/735/1/L5 | - |
dc.relation.ispartof | Astrophysical Journal Letters, 2011, vol. 735, num. L5 | - |
dc.relation.uri | https://doi.org/10.1088/2041-8205/735/1/L5 | - |
dc.rights | (c) American Astronomical Society, 2011 | - |
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 X | - |
dc.subject.other | Particle accelerators | - |
dc.subject.other | X-ray binaries | - |
dc.subject.other | X-rays | - |
dc.title | A search for Very High Energy gamma-ray emission from Sco X-1 with the MAGIC telescopes | - |
dc.type | info:eu-repo/semantics/article | - |
dc.type | info:eu-repo/semantics/publishedVersion | - |
dc.identifier.idgrec | 594211 | - |
dc.date.updated | 2018-06-07T13:43:05Z | - |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | - |
Appears in Collections: | Articles publicats en revistes (Institut de Ciències del Cosmos (ICCUB)) Articles publicats en revistes (Física Quàntica i Astrofísica) |
Files in This Item:
File | Description | Size | Format | |
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594211.pdf | 243.8 kB | Adobe PDF | View/Open |
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