Einstein@Home DISCOVERY OF a PALFA MILLISECOND PULSAR IN AN ECCENTRIC BINARY ORBIT

@article{Knispel2015EinsteinHomeDO,
  title={Einstein@Home DISCOVERY OF a PALFA MILLISECOND PULSAR IN AN ECCENTRIC BINARY ORBIT},
  author={Benjamin Knispel and Andrew G. Lyne and Ben W. Stappers and Paulo C. C. Freire and Patrick Lazarus and Bruce Allen and Carsten Aulbert and Oliver Bock and Slavko Bogdanov and Adam Brazier and Fernando Camilo and F. Cardoso and Shami Chatterjee and James M. Cordes and Fronefield Crawford and Julia S. Deneva and Heinz-Bernd Eggenstein and Henning Fehrmann and Robert D. Ferdman and Jason W. T. Hessels and Fredrick A. Jenet and Chen Karako-Argaman and Victoria M. Kaspi and Joeri van Leeuwen and Duncan R. Lorimer and Ryan S. Lynch and Bernd Machenschalk and E. C. Madsen and Maura Mclaughlin and Chitrang Patel and Scott M. Ransom and Paul Scholz and Xavier Siemens and L. G. Spitler and Ingrid H. Stairs and Kevin Stovall and Joseph K. Swiggum and Arun Venkataraman and Robert S. Wharton and W. W. Zhu},
  journal={The Astrophysical Journal},
  year={2015},
  volume={806},
  pages={140}
}
We report the discovery of the millisecond pulsar (MSP) PSR J1950+2414 (P = 4.3 ms) in a binary system with an eccentric (e = 0.08) 22 day orbit in Pulsar Arecibo L-band Feed Array survey observations with the Arecibo telescope. Its companion star has a median mass of 0.3 M⊙ and is most likely a white dwarf (WD). Fully recycled MSPs like this one are thought to be old neutron stars spun-up by mass transfer from a companion star. This process should circularize the orbit, as is observed for the… 

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