The Diffuse Radiation Field at High Galactic Latitudes
Astrophysics of Galaxies
2018-05-23 v4
Abstract
We have used GALEX observations of the North and South Galactic poles to study the diffuse ultraviolet background at locations where the Galactic light is expected to be at a minimum. We find offsets of 230 -- 290 photon units in the FUV (1531 \AA) and 480 -- 580 photon units in the NUV (2361 \AA). Of this, approximately 120 photon units can be ascribed to dust scattered light and another 110 (190 in the NUV) photon units to extragalactic radiation. The remaining radiation is, as yet, unidentified and amounts to photon units in the FUV and photon units in the NUV. We find that molecular hydrogen fluorescence contributes to the FUV when the 100 m surface brightness is greater than 1.08 MJy sr.
Keywords
Cite
@article{arxiv.1701.07644,
title = {The Diffuse Radiation Field at High Galactic Latitudes},
author = {M. S. Akshaya and Jayant Murthy and S. Ravichandran and R. C. Henry and James Overduin},
journal= {arXiv preprint arXiv:1701.07644},
year = {2018}
}
Comments
11 pages and 13 figures