منابع مشابه
The Diffuse Ultraviolet Background Radiation
I review the nature of the diffuse cosmic ultraviolet background radiation. The ultraviolet background is the last frontier: all the other diffuse backgrounds have been examined, at least at some level. The ultraviolet background has only begun to be explored; it offers rich promise of new astrophysical knowledge.
متن کاملDiffuse solar ultraviolet radiation.
The solar UV exposure to the eyes of humans is due to the direct and diffuse components of solar radiation. The direct ocular UV exposures to the eyes are reduced due to the natural aversion of the majority of people from looking directly at the sun. The diffuse UV is incident from all directions and as a result, it is more difficult to minimise the ocular exposure to this component of the sola...
متن کاملPlanck 2015 results - X. Diffuse component separation: Foreground maps
Planck has mapped the microwave sky in temperature over nine frequency bands between 30 and 857 GHz and in polarization over seven frequency bands between 30 and 353 GHz in polarization. In this paper we consider the problem of diffuse astrophysical component separation, and process these maps within a Bayesian framework to derive an internally consistent set of full-sky astrophysical component...
متن کاملIntense Diffuse Far-ultraviolet Emission from the Orion Nebula
We present spectra of the diffuse far-UV (900–1200 ) emission from a region near the Orion Nebula: the Å first high-resolution spectra of the diffuse background radiation. These observations were made using serendipitous Far Ultraviolet Spectroscopic Explorer (FUSE) observations and were only possible because of the strength of the diffuse emission (≈ photons cm 2 sr 1 s 1 ) and the sensitivity...
متن کاملDiffuse Component of the Solar Ultraviolet Radiation in Tree Shade
This paper has provided the first set of quantitative data of diffuse erythemal UV and UVA in tree shade at a sub-tropical Southern Hemisphere latitude. Over the summer, approximately 60% of the erythemal UV radiation in the tree shade is due to the diffuse component. Similarly, approximately 56% of the UVA radiation in the tree shade is due to the diffuse component. In the tree shade these dif...
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ژورنال
عنوان ژورنال: Astrophysics and Space Science
سال: 2013
ISSN: 0004-640X,1572-946X
DOI: 10.1007/s10509-013-1612-1