# The Lyman‐α Sky Background as Observed by New Horizons

title={The Lyman‐$\alpha$ Sky Background as Observed by New Horizons},
author={G. Gladstone and W. Pryor and S. Stern and K. Ennico and C. Olkin and J. Spencer and H. Weaver and L. Young and F. Bagenal and A. Cheng and N. Cunningham and H. Elliott and T. Greathouse and D. Hinson and J. Kammer and I. Linscott and J. Parker and K. Retherford and A. Steffl and D. Strobel and M. Summers and H. Throop and M. Versteeg and Michael W. Davis and The New Horizons Team},
journal={Geophysical Research Letters},
year={2018},
volume={45},
pages={8022-8028}
}
Recent observations of interplanetary medium (IPM) atomic hydrogen Lyman-{\alpha} (Ly{\alpha}) emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons (NH), 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 NH Alice data agree very well with the much earlier Voyager UVS results, after these are reduced by a factor of… Expand
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