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astro-ph.EP2023
Constraints on Europa's water group torus from HST/COS observations
Lorenz Roth, H. Todd Smith, Kazuo Yoshioka +8
In-situ plasma measurements as well as remote mapping of energetic neutral atoms around Jupiter provide indirect evidence that an enhancement of neutral gas is present near the orb…
astro-ph.EP2021
On Charon's Far-Ultraviolet Surface Reflectance
Brian A. Keeney, Joel Wm. Parker, Nathaniel Cunningham +3
We present the first measurements of Charon's far-ultraviolet surface reflectance, obtained by the Alice spectrograph on New Horizons. We find no measurable flux shortward of 1650…
astro-ph.EP2018
The Lyman-α Sky Background as Observed by New Horizons
G. Randall Gladstone, Wayne R. Pryor, S. Alan Stern +22
Recent observations of interplanetary medium (IPM) atomic hydrogen Lyman-α (Lyα) emission in the outer solar system, made with the Alice ultraviolet spectrograph on New Horizons (N…