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The Anomalous Acceleration of PSR J2043+1711: Long-period Orbital Companion or Stellar Flyby?

  • Authors: Thomas Donlon, Sukanya Chakrabarti, Michael T. Lam, Daniel Huber, Daniel Hey, Enrico Ramirez-Ruiz, Benjamin Shappee, David L. Kaplan, Gabriella Agazie, Akash Anumarlapudi, Anne M. Archibald, Zaven Arzoumanian, Paul T. Baker, Paul R. Brook, H. Thankful Cromartie, Kathryn Crowter, Megan E. DeCesar, Paul B. Demorest, Timothy Dolch, Elizabeth C. Ferrara, William Fiore, Emmanuel Fonseca, Gabriel E. Freedman, Nate Garver-Daniels, Peter A. Gentile, Joseph Glaser, Deborah C. Good, Jeffrey S. Hazboun, Mark Huber, Ross J. Jennings, Megan L. Jones, Matthew Kerr, Duncan R. Lorimer, Jing Luo, Ryan S. Lynch, Alexander McEwen, Maura A. McLaughlin, Natasha McMann, Bradley W. Meyers, Cherry Ng, David J. Nice, Timothy T. Pennucci, Benetge B. P. Perera, Nihan S. Pol, Henri A. Radovan, Scott M. Ransom, Paul S. Ray, Ann Schmiedekamp, Carl Schmiedekamp, Brent J. Shapiro-Albert, Ingrid H. Stairs, Kevin Stovall, Abhimanyu Susobhanan, Joseph K. Swiggum, Michael A. Tucker, Haley M. Wahl

Thomas Donlon et al 2025 The Astrophysical Journal 983 .

  • Provider: AAS Journals

Caption: Figure 3.

The spectrum and corresponding line-of-sight velocity measurement of Gaia DR3 1811439569904158208. R ∼ 1200 spectra are shown for a standard Gaia star with a well-known radial velocity, and Gaia DR3 1811439569904158208. The absorption lines that were used to compute line-of-sight velocity are highlighted in gray. The distribution of line-of-sight velocity measurements (after subtracting the velocity of the standard star) from 1000 bootstraps is provided in the bottom panel; it has a median and standard deviation of RV = −4 ± 14 km s−1.

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