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Variable Very-High-Energy Gamma-Ray Emission from the Microquasar LS I +61 303

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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.

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ALBERT, J., et al. Variable Very-High-Energy Gamma-Ray Emission from the Microquasar LS I +61 303. Science. 2006. Vol. 312, num. 5781, pags. 1771-1773. ISSN 0036-8075. [consulted: 28 of June of 2026]. Available at: https://hdl.handle.net/2445/45325

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