The NANOGrav 12.5 yr Data Set: Polarimetry and Faraday Rotation Measures from Observations of Millisecond Pulsars with the Green Bank Telescope

@article{Wahl2022TheN1,
  title={The NANOGrav 12.5 yr Data Set: Polarimetry and Faraday Rotation Measures from Observations of Millisecond Pulsars with the Green Bank Telescope},
  author={Haley M. Wahl and Maura Mclaughlin and Peter A. Gentile and M. L. Jones and Ren{\'e}e Spiewak and Zaven Arzoumanian and Kathryn Crowter and Paul B. Demorest and Megan E. DeCesar and Timothy Dolch and J. A. Ellis and Robert D. Ferdman and Elizabeth C. Ferrara and Emmanuel Fonseca and Nathan Garver-Daniels and G. Jones and Michael T. Lam and Lina Levin and Natalia Lewandowska and Duncan R. Lorimer and Ryan S. Lynch and Dustin R. Madison and Cherry Ng and David J. Nice and Timothy T. Pennucci and Scott M. Ransom and Paul. S. Ray and Ingrid H. Stairs and Kevin Stovall and Joseph K. Swiggum and W. W. Zhu},
  journal={The Astrophysical Journal},
  year={2022},
  volume={926}
}
In this work, we present polarization profiles for 23 millisecond pulsars observed at 820 and 1500 MHz with the Green Bank Telescope as part of the NANOGrav pulsar timing array. We calibrate the data using Mueller matrix solutions calculated from observations of PSRs B1929+10 and J1022+1001. We discuss the polarization profiles, which can be used to constrain pulsar emission geometry, and present both the first published radio polarization profiles for nine pulsars and the discovery of very low… 

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