Radio pulsations from the γ-ray millisecond pulsar PSR J2039–5617

  title={Radio pulsations from the $\gamma$-ray millisecond pulsar PSR J2039–5617},
  author={A. Corongiu and Roberto P. Mignani and Albertus S. Seyffert and Colin J. Clark and Christo Venter and Lars Nieder and Andrea Possenti and Marta Burgay and Andrea Belfiore and A De Luca and Alessandro Ridolfi and Zorawar Wadiasingh},
  journal={arXiv: High Energy Astrophysical Phenomena},
The predicted nature of the candidate redback pulsar 4FGL J2039.5-56.17 was recently confirmed by the discovery of $\gamma$-ray millisecond pulsations (Clark et al. 2020, hereafter Paper I), which identify this $\gamma$-ray source as PSR J2039-5617. We observed 4FGL 2039.5-5617 with the Parkes radio telescope in 2016 and 2019. We detect radio pulsations at 1.4 GHz and 3.1 GHz, at the 2.6 ms period discovered in $\gamma$-rays, and also at 0.7 GHz in one 2015 archival observation. In all bands… 

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