| Title | Radio pulsations from a neutron star within the gamma-ray binary LS I+61 degrees 303 |
| Authors | Weng, Shan-Shan Qian, Lei Wang, Bo-Jun Torres, D. F. Papitto, A. Jiang, Peng Xu, Renxin Li, Jian Yan, Jing-Zhi Liu, Qing-Zhong Ge, Ming-Yu Yuan, Qi-Rong |
| Affiliation | Nanjing Normal Univ, Dept Phys, Nanjing, Peoples R China Nanjing Normal Univ, Inst Theoret Phys, Nanjing, Peoples R China Chinese Acad Sci, Natl Astron Observ, Beijing, Peoples R China Chinese Acad Sci, Natl Astron Observ, CAS Key Lab Fast, Beijing, Peoples R China Peking Univ, Kavli Inst Astron & Astrophys, Beijing, Peoples R China Peking Univ, Sch Phys, Dept Astron, Beijing, Peoples R China Inst Catalana Recerca & Estudis Avancats ICREA, Barcelona, Spain CSIC, Inst Space Sci, ICE, Barcelona, Spain Inst Estudis Espacials Catalunya IEEC, Barcelona, Spain INAF Osservatorio Astron Roma OAR, Rome, Italy Univ Sci & Technol China, Dept Astron, CAS Key Lab Res Galaxies & Cosmol, Hefei, Peoples R China Univ Sci & Technol China, Sch Astron & Space Sci, Hefei, Peoples R China Chinese Acad Sci, Purple Mt Observ, Key Lab Dark Matter & Space Astron, Nanjing, Peoples R China Chinese Acad Sci, Inst High Energy Phys, Key Lab Particle Astrophys, Beijing, Peoples R China |
| Keywords | X-RAY INTERSTELLAR SCINTILLATION MODEL VARIABILITY PULSARS BURSTS SEARCH |
| Issue Date | Mar-2022 |
| Publisher | NATURE ASTRONOMY |
| Abstract | LS I +61 degrees 303 is one of the rare gamma-ray binaries(1) that emit most of their luminosity in photons with energies beyond 100 MeV (ref.(2)). It is well characterized-the similar to 26.5 day orbital period is clearly detected at many wavelengths(2-4)-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 components and LS I +61 degrees 303 also shows superorbital variability(3,6-9). A couple of energetic (similar to 10(37) erg s(-1)), short, magnetar-like bursts have been plausibly ascribed to it(10)(-13). Although the phenomenology of LS I +61 degrees 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 degrees 303 with a period P = 269.15508 +/- 0.00016 ms at a significance of >20 sigma. These pulsations strongly argue for the existence of a rotating neutron star within LS I +61 degrees 303. |
| URI | http://hdl.handle.net/20.500.11897/639353 |
| ISSN | 2397-3366 |
| DOI | 10.1038/s41550-022-01630-1 |
| Indexed | SCI(E) |
| Appears in Collections: | 科维理天文与天体物理研究所 物理学院 |
