5 papers · 1 filter
The Cosmic Ultraviolet Background at the Galactic Poles
Jayant Murthy, James Overduin, Raj Manas +3
We have used archival GALEX data to separate the cosmic ultraviolet background at the Galactic Poles into two components: the dust scattered light and an offset. We have modeled th…
Observations of High Galactic Latitude Line and Continuum Emission (912 - 1600 Ã ) with New Horizons
Jayant Murthy, James Overduin, Seth Redfield +5
We present observations of the cosmic ultraviolet background (CUVB) from 912 - 1600 A using the Stem aperture of the Alice spectrograph on the New Horizons spacecraft at 56 AU from…
Modelling the scattering by porous aggregate dust grains in the Far-Ultraviolet halos of Spica and Achernar
Nilanjana Dey Choudhury, P. Shalima, Keerthana U. +1
Far-Ultraviolet (FUV) halos have been detected around six bright stars by Murthy and Henry (2011) using GALEX observations. These halos are thought to be caused by forward scatteri…
The Lyman alpha Sky as Observed by New Horizons
G. R. Gladstone, J. M. Shull, W. R. Pryor +22
During September 2023 the Alice ultraviolet spectrograph on the New Horizons (NH) spacecraft was used to map diffuse Lyman alpha (Lya) emission over most of the sky, at a range of…
Excess Ultraviolet Emission at High Galactic Latitudes: A New Horizons View
Jayant Murthy, J. Michael Shull, Marc Postman +11
We present new observations of the cosmic ultraviolet background (CUVB) at high Galactic latitudes (), made using the Alice UV spectrograph on board the New Horiz…