ultraviolet source


  • WordNet 3.6
    • n ultraviolet source any source of illumination that emits ultraviolet radiation
    • ***


In literature:

Ultraviolet radiation could serve as an extraterrestrial energy source for organic synthesis.
"Significant Achievements in Space Bioscience 1958-1964" by National Aeronautics and Space Administration

In news:

Oceanographers with the Nova Southeastern University have found that some deep-sea crabs have eyes sensitive to ultraviolet light, which help them locate and sort glowing plankton, their source of food.
Among the equipment they're installing for this purpose are carbon, paper and reverse-osmosis filters that remove impurities, ultraviolet light sources that zap microbes, and soft-drink carbonators that make bubbly waters from the tap.
Other American Ultraviolet purchases over the past five years include UV Source, maker of the Green Spot, and Aetek UV Systems, developer of UV systems for the web industry.

In science:

However, in several cases an Extreme Ultraviolet (EUV) ionisation source is needed to explain the properties of the nebula or some part of it or some particular emission lines.
Understanding ULX Nebulae in the Framework of Supercritical Accretion
Our sample of infra-red bright reddened quasars may therefore represent a transition phase between the starburst and optical quasar phases where the dust has not yet fully cleared preventing the sources from being selected as ultraviolet-luminous quasars.
Heavily Reddened Quasars at z~2 in the UKIDSS Large Area Survey: A Transitional Phase in AGN Evolution
It is particularly important in those parts of the electromagnetic spectrum where laser sources are (presently) not available such as the vacuum ultraviolet, soft and hard X-rays, parts of the infrared, etc.,.
The world of synchrotrons
The ultraviolet domain is potentially a rich source of diagnostic lines.
Spectroscopic Diagnostics for AGNs
We obtain photometric redshifts for most of the sources in our survey using a method based on empirically-built templates spanning from ultraviolet to mid-infrared wavelengths.
Spitzer view on the evolution of star-forming galaxies from z=0 to z~3
In star-forming regions, which are shielded from ultraviolet radiation, the main source of ionization is by cosmic rays.
The chemistry of high-mass star formation
Another potential source of nonperturbative corrections are ultraviolet renormalons, poles on the negative real axis of the b-plane .
Review of Theoretical Status: the Long and Short of High Energy Jets
The Optical Monitor (Mason et al. 2001) has detected a total of 2148 point sources mostly in the U band, but partly also in ultraviolet (UV) bands (Audard et al. 2007); of these, 1893 objects have 2MASS counterparts, i.e., are most likely to be stellar.
X-rays from young stars - a summary of highlights from the XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST)
Most of the early Lyα observations of sources in the local Universe were made with the International Ultraviolet Explorer (IUE), which obtained integrated low resolution spectra through a large (∼ 20 arcsec) aperture, see e.g.
Understanding Lyman-alpha emitters
For the SDSS/WISE quasars deliberately selected as the most luminous infrared sources, the median log LI R/Lbol = 0.1, with extremes reaching values of ∼ 2, indicating that ultraviolet-derived Lbol can be seriously underestimated even for type 1 quasars.
Infrared Classification and Luminosities For Dusty AGN and the Most Luminous Quasars
We know, at the moment, at least three sources for n! behaviour: infrared and ultraviolet renormalons and instantons.
In combat with nonperturbative QCD
The new Fe IV results should be particularly useful for the analysis and application to ultraviolet to optical spectra from astrophysical and laboratory sources.
Atomic data from the Iron Project.LVIII. New radiative transition probabilities for Fe IV including fine structure
In particular, the dephasing for a linear combination X (t) = P αiXi (t) of 1/f noise sources with high ultraviolet cutoffs can be obtained following the procedure described.
Dephasing of Josephson qubits close to optimal points
All three source components and the hot dust component emit strongly at ultraviolet to near-IR wavelengths.
Decomposing Dusty Galaxies. I. Multi-Component Spectral Energy Distribution Fitting
F I G . 6 . — Cross-sectional views illustrating the optically-th in dust-shell approximation used to calculate the SEDs of dust components that are directly heated by ultraviolet and optical radiation from the SB and AGN source components (see text).
Decomposing Dusty Galaxies. I. Multi-Component Spectral Energy Distribution Fitting