Results 121 to 130 of about 1,069,031 (152)

Insights into the diversity of exoplanet atmospheres in the era of JWST. [PDF]

Astrophys Space Sci
Radica M.
europepmc   +1 more source

Spatial variation of energy transport mechanisms within solar flare ribbons. [PDF]

Nat Astron
Kerr GS, Krucker S, Allred JC, Rodríguez-Gómez JM, Inglis AR, Ryan DF, Hayes LA, Milligan RO, Kowalski AF, Plowman JE, Young PR, Kucera TA, Brosius JW.   +12 more
europepmc   +1 more source

The Infrared Spectrum of Uranus Revealed with JWST

Roman M, Fletcher L, Hammel H, King O, Irwin P, de Pater I, Moses J, Orton G, Rowe-Gurney N, Melin H, Hedman M, Toogood S, Harkett J, Penn J, Milam S.   +14 more
europepmc   +1 more source

Extreme Ultraviolet Astronomy

, 2003
This text describes the development of astronomy in the Extreme Ultraviolet (EUV) wavelength range, from the first rocket-based experiments in the late 1960s through to later satellite missions. Discussions of the results from important space projects are followed by an analysis of the contributions made by EUV astronomy to the study of specific groups
Martin A. Barstow, Jay B. Holberg
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Selection of materials for soft x-ray (SXR) and extreme ultraviolet (EUV) filters for space astronomy and other applications

SPIE Proceedings, 1994
This paper briefly reviews the more traditional materials that have been used for Soft X-Ray (SXR) and Extreme Ultraviolet (EUV) filters and then discusses several applications where new multilayer combinations of materials are being employed. The new applications include projection lithography and the detection of Energetic Neutral Atom (ENA ...
Donald Mitchell, Bill R Sandel, Forbes R Powell   +2 more
exaly   +2 more sources

The Design Of An Echelle Spectrometer For Diffuse Extreme Ultraviolet/Far Ultraviolet Astronomy

Proceedings of SPIE, 1986
The novel, relatively high-resolution nebular spectrometer design presented incorporates a mechanical precollimator with an objective echelle grating that proceeds to a cross-dispensing Wadsworth configuration; the minimum feasible number of reflections is employed in order to maximize EUV sensitivity. The configuration, which is noted to be capable of
exaly   +2 more sources

Extreme-ultraviolet refractive optics

Nature, 2018
Refraction is a well-known optical phenomenon that alters the direction of light waves propagating through matter. Microscopes, lenses and prisms based on refraction are indispensable tools for controlling the properties of light beams at visible ...
Bernd Schutte, Lorenz Drescher, Marc Vrakking   +2 more
exaly   +2 more sources

Extreme ultraviolet astronomy

Planetary and Space Science, 1992
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Aspheric grating for extreme ultraviolet astronomy

Applied Optics, 1978
A family of plane curves is developed which can diffract incident parallel rays to a point focus. These curves, termed diffractoidal curves, are rotated around an axis to produce surfaces of revolution correspondingly termed diffractoids, whose imaging properties for sources at infinity are studied by ray tracing in a few examples.
S O, Kastner, C, Wade
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Ultrasmooth beryllium substrates for solar astronomy in extreme ultraviolet wavelengths

Applied Optics, 2019
The paper describes a multistage method of forming ultrasmooth substrates based on bulk beryllium. Such substrates are suggested to be used for multilayer extreme ultraviolet mirrors of spacecraft missions on solar corona investigations in the spectral range 17.1-58.4 nm. The technique for chemical nickel plating of the sample surface is described. The
N. I. Chkhalo, M. S. Mikhailenko, A. E. Pestov, V. N. Polkovnikov, M. V. Zorina, S. Yu. Zuev, D. S. Kazakov, A. V. Milkov, I. L. Strulya, V. A. Filichkina, A. S. Kozlov   +10 more
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