Components of the diffuse ultraviolet radiation at high latitudes
- Title
- Components of the diffuse ultraviolet radiation at high latitudes
- Creator
- Akshaya M.S.; Murthy J.; Ravichandran S.; Henry R.C.; Overduin J.
- Description
- We have used data from the Galaxy Evolution Explorer to study the different components of the diffuse ultraviolet background in the region between the Galactic latitudes 70?-80?. We find an offset at zero dust column density (E(B ? V) = 0) of 240 18 photon units in the FUV (1539 and 394 37 photon units in the NUV (2316 . This is approximately half of the total observed radiation with the remainder divided between an extragalactic component of 114 18 photon units in the FUV and 194 37 photon units in the NUV and starlight scattered by Galactic dust at high latitudes. The optical constants of the dust grains were found to be a = 0.4 0.1 and g = 0.8 0.1 (FUV) and a = 0.4 0.1 and g = 0.5 0.1 (NUV). We cannot differentiate between a Galactic or extragalactic origin for the zero-offset but can affirm that it is not from any known source. 2019 Oxford University Press. All rights reserved.
- Source
- Monthly Notices of the Royal Astronomical Society, Vol-489, No. 1, pp. 1120-1126.
- Date
- 2019-01-01
- Publisher
- Oxford University Press
- Subject
- Diffuse radiation; Dust; Extinction; ISM: clouds; Ultraviolet: ISM
- Coverage
- Akshaya M.S., Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, 560 029, India; Murthy J., Indian Institute of Astrophysics, Bengaluru, 560 034, India; Ravichandran S., Department of Physics and Electronics, CHRIST (Deemed to be University), Bengaluru, 560 029, India; Henry R.C., Henry A. Rowland Department of Physics and Astronomy, Johns Hopkins University, Baltimore, 21218, MD, United States; Overduin J., Department of Physics, Astronomy and Geosciences, Towson University, Towson, 21252, MD, United States
- Rights
- All Open Access; Green Open Access
- Relation
- ISSN: 358711; CODEN: MNRAA
- Format
- Online
- Language
- English
- Type
- Article
Collection
Citation
Akshaya M.S.; Murthy J.; Ravichandran S.; Henry R.C.; Overduin J., “Components of the diffuse ultraviolet radiation at high latitudes,” CHRIST (Deemed To Be University) Institutional Repository, accessed February 25, 2025, https://archives.christuniversity.in/items/show/16521.