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Title: The Diffuse Radiation Field at High Galactic Latitudes
Authors: Akshaya, M. S
Murthy, J
Ravichandran, S
Henry, R. C
Overduin, J
Keywords: Dust, extinction;Local interstellar matter;Surveys;Ultraviolet: general;Ultraviolet: ISM
Issue Date: 10-May-2018
Publisher: IOP Publishing
Citation: The Astrophysical Journal Letters, Vol. 858, No. 2, L101
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 far-UV (1531 Å) and 480–580 photon units in the near-UV (2361 Å). Of this, approximately 120 photon units can be ascribed to dust-scattered light and another 110 photon units (190 in the near-UV) to extragalactic radiation. The remaining radiation is, as yet, unidentified and amounts to 120–180 photon units in the far-UV and 300–400 photon units in the near-UV. We find that molecular hydrogen fluorescence contributes to the far-UV when the 100 μm surface brightness is greater than 1.08 MJy sr−1.
Description: Restricted Access
ISSN: 2041-8205
???metadata.dc.rights???: © The American Astronomical Society
Appears in Collections:IIAP Publications

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