Diffuse UV Background: GALEX Results

Details Diffuse UV Background: GALEX Results Diffuse UV Background: GALEX Results

2009-06-16

arxiv.org/abs/0906.2961v1

Astronomy and Astrophysics

Astrophysics

Galaxy Astrophysics

6 pages, 11 figures, submitted to Memorie della Societa Astronomica Italiana

Scientific paper

A bright UV GALEX image in the direction of a dense high galactic latitude interstellar dust cloud is examined to test (and to reject) the idea that a bright extragalactic UV background radiation field exists. A GALEX "Deep Imaging Survey" image of a second high latitude region (a region almost totally free of dust) shows a similar bright background, which, clearly, cannot be due to starlight scattered from interstellar dust. I speculate that the background is due to dark matter particles interacting with interstellar gas/dust nucleons.

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