The Lyman‐α Sky Background as Observed by New Horizons

  title={The Lyman‐$\alpha$ Sky Background as Observed by New Horizons},
  author={G. Randall Gladstone and Wayne R. Pryor and S. Alan Stern and Kimberly Ennico and Cathy B. Olkin and John R. Spencer and H. Weaver and Leslie A. Young and Fran Bagenal and Andrew F. Cheng and Nathaniel Cunningham and H. A. Elliott and Thomas K. Greathouse and David Hinson and Joshua A. Kammer and Ivan R. Linscott and Joel Wm. Parker and Kurt D. Retherford and Andrew J. Steffl and Darrell F. Strobel and Michael E. Summers and H. B. Throop and Maarten H. Versteeg and Michael W. Davis and The New Horizons Team},
  journal={Geophysical Research Letters},
  pages={8022 - 8028}
Recent observations of interplanetary medium atomic hydrogen Lyman‐α emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons, are presented. The observations include regularly spaced great circle scans of the sky and pointed observations near the downstream and upstream flow directions of interstellar H atoms. The New Horizons Alice data agree very well with the much earlier Voyager UVS results, after these are reduced by a factor of 2.4 in brightness… 

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