Results 1 to 10 of about 124,058 (295)

The Ultraviolet-X-Ray Connection in AGN Outflows [PDF]

open access: yesSpace Science Reviews, 2010
In this paper I review the recent progress in understanding the physics of the gas outflowing from active galactic nuclei and its impact on the surrounding environment, using the combined information provided by multiwavelength Ultraviolet-X-ray campaigns.
Costantini, Elisa
openaire   +5 more sources

Irradiation of Ultraviolet Rays to Vienna Sausage

open access: bronzeNIPPON SHOKUHIN KOGYO GAKKAISHI, 1967
Tadashi Sato, Hiroshi Suzuki
openalex   +4 more sources

Electromagnetic Radiation [PDF]

open access: yes, 2010
Electromagnetic radiation, commonly referred to as light, underpins all spectroscopic techniques, ranging from the highly energetic gamma rays, through x-rays, ultraviolet, visible, infrared, microwaves to the low-energy radio waves.
Andrews, D.L.
core   +1 more source

Design study of time-preserving grating monochromators for ultrashort pulses in the extreme-ultraviolet and soft X-rays [PDF]

open access: yes, 2017
The design of grating-based instruments to handle and condition coherent ultrafast pulses in the extreme-ultraviolet is discussed. The main application of such instruments is the monochromatization of high-order laser harmonics and free-electron-laser ...
Fabris, Nicola   +3 more
core   +3 more sources

THE ULTRAVIOLET RAYS IN THE TREATMENT OF CHILBLAIN [PDF]

open access: yesJournal of the American Medical Association, 1919
Chilblain, or erythema pernio, is a form of erythema that appears in the late fall and winter months in individuals with a poor peripheral circulation and a disturbed vasomotor mechanism. In the mild cases there is merely a slight dusky or dark red discoloration of the regions with feeble peripheral circulation, as the tip of the nose, the lobes of the
openaire   +2 more sources

Correlated X-ray/UV/optical emission and short term variability in a Seyfert 1 galaxy NGC 4593

open access: yes, 2017
We present a detailed multi-frequency analysis of an intense monitoring programme of Seyfert 1 galaxy NGC 4593 over a duration of nearly for a month with Swift observatory. We used 185 pointings to study the variability in six ultraviolet/optical and two
Naik, Sachindra, Pal, Main
core   +1 more source

Mass-loss rates for transiting exoplanets

open access: yes, 2011
Exoplanets at small orbital distances from their host stars are submitted to intense levels of energetic radiations, X-rays and extreme ultraviolet (EUV).
Anderson   +123 more
core   +1 more source

A Brief History of AGN [PDF]

open access: yes, 1999
Astronomers knew early in the twentieth century that some galaxies have emission-line nuclei. However, even the systematic study by Seyfert (1943) was not enough to launch active galactic nuclei (AGN) as a major topic of astronomy.
Antonucci R. A. R.   +42 more
core   +2 more sources

Panspermia, Past and Present: Astrophysical and Biophysical Conditions for the Dissemination of Life in Space

open access: yes, 2010
Astronomically, there are viable mechanisms for distributing organic material throughout the Milky Way. Biologically, the destructive effects of ultraviolet light and cosmic rays means that the majority of organisms arrive broken and dead on a new world.
A.A. Sharov   +65 more
core   +1 more source

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