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Título: | Radio pulsations from a neutron star within the gamma-ray binary LS I +61° 303 |
Autor: | Weng, Shan-Shan; Qian, Liying; Wang, Bo-Jun; Torres, Diego F. CSIC ORCID; Papitto, Alessandro CSIC ORCID; Jiang, Peng; Xu, Renxin; Li, Jian CSIC ORCID; Yan, Jing-Zhi; Liu, Qing-Zhong; Ge, Ming-Yu; Yuan, Qi-Rong | Palabras clave: | Compact astrophysical objects High-energy astrophysics |
Fecha de publicación: | 17-mar-2022 | Editor: | Nature Publishing Group | Citación: | Nature Astronomy 6: 698-702 (2022) | Resumen: | LS I +61° 303 is one of the rare gamma-ray binaries that emit most of their luminosity in photons with energies beyond 100 MeV (ref. ). It is well characterized—the ~26.5 day orbital period is clearly detected at many wavelengths—and other aspects of its multifrequency behaviour make it the most interesting example of its class. The morphology of high-resolution radio images changes with orbital phase, displaying a cometary tail pointing away from the high-mass star component and LS I +61° 303 also shows superorbital variability. A couple of energetic (~10 erg s), short, magnetar-like bursts have been plausibly ascribed to it. Although the phenomenology of LS I +61° 303 has been the subject of theoretical scrutiny for decades, there has been a lack of certainty regarding the nature of the compact object in the binary that has hampered our understanding of the source. Here, using observations with the Five-hundred-meter Aperture Spherical radio Telescope, we report the existence of transient radio pulsations from the direction of LS I +61° 303 with a period P = 269.15508 ± 0.00016 ms at a significance of >20σ. These pulsations strongly argue for the existence of a rotating neutron star within LS I +61° 303. | Versión del editor: | http://doi.org/10.1038/s41550-022-01630-1 | URI: | http://hdl.handle.net/10261/280097 | DOI: | 10.1038/s41550-022-01630-1 | Identificadores: | doi: 10.1038/s41550-022-01630-1 issn: 2397-3366 |
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