English

The Diffuse Ultraviolet Background Close to the Galactic Plane

Astrophysics of Galaxies 2020-04-14 v1

Abstract

We have used Voyager and Galex observations to map the diffuse Galactic light near the Galactic equator. We find that most of the observations are relatively faint with surface brightnesses of less than 5,000 photon units. This is important because many ultraviolet telescopes have not observed at low Galactic latitudes because of the fear of a bright diffuse emission. Our data are consistent with emission from interstellar dust grains with albedo (aa) of 0.2 -- 0.3 and phase function (gg) <0.7 < 0.7 at 1100 \AA; 0.2<a<0.5;g<0.80.2 < a < 0.5; g < 0.8 at 1500 \AA; and 0.4<a<0.6;g<0.40.4 < a < 0.6; g < 0.4 at 2300 \AA.

Keywords

Cite

@article{arxiv.2004.05347,
  title  = {The Diffuse Ultraviolet Background Close to the Galactic Plane},
  author = {Jayant Murthy and R. C. Henry and James Overduin},
  journal= {arXiv preprint arXiv:2004.05347},
  year   = {2020}
}

Comments

Submitted to MNRAS

R2 v1 2026-06-23T14:47:52.228Z