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http://hdl.handle.net/2445/45325| Title: | Variable Very-High-Energy Gamma-Ray Emission from the Microquasar LS I +61 303 |
| Author: | Albert, J. Aliu, E. Armada, A. Bordas Coma, Pol Bosch i Ramon, Valentí Cortina Blanco, Juan Domingo Santamaría, Eva Errando, M. Fernández, Enrique Firpo, R. Flix, J. López, J. Martinez, Manuel Moralejo, Abelardo Oña-Wilhelmi, Emma de Paredes i Poy, Josep Maria Ribó Gomis, Marc Sidro Martín, Núria Tescaro, Diego Zapatero, J. |
| Keywords: | Quàsars Estels binaris Radioastronomia Raigs còsmics Jets (Astrofísica) Astronomia de raigs gamma Astrofísica Quasars Double stars Radio astronomy Cosmic rays Astrophysical jets Gamma ray astronomy Astrophysics |
| Issue Date: | 2006 |
| Publisher: | American Association for the Advancement of Science |
| Abstract: | Microquasars are binary star systems with relativistic radio-emitting jets. They are potential sources of cosmic rays and can be used to elucidate the physics of relativistic jets. We report the detection of variable gamma-ray emission above 100 gigaelectron volts from the microquasar LS I 61 + 303. Six orbital cycles were recorded. Several detections occur at a similar orbital phase, which suggests that the emission is periodic. The strongest gamma-ray emission is not observed when the two stars are closest to one another, implying a strong orbital modulation of the emission or absorption processes. |
| Note: | Versió postprint del document publicat a: http://dx.doi.org/10.1126/science.1128177 |
| It is part of: | Science, 2006, vol. 312, num. 5781, p. 1771-1773 |
| URI: | http://hdl.handle.net/2445/45325 |
| Related resource: | http://dx.doi.org/10.1126/science.1128177 |
| ISSN: | 0036-8075 |
| Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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| 546720.pdf | 180.59 kB | Adobe PDF | View/Open |
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