منابع مشابه
Sodium Emission from Io: Implications
The surface of lo may be covered with a layer of ammonia ice containing trace amounts of sodium potassium, and calcium; and atmospheric nitrogen could be formed as a photochemical product of ammonia photolysis. Intense sporadic sodium emission from Io can be excited by collisions involving vib~ationally excited n.itrogen molecules. These metastable molecules may be formed by electron impact, wi...
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The problem of redistributing IO from bondpads on the periphery of an IC to an array of solder bumps occurs frequently in MCM layout. We show that the commonly held belief that providing enough escapes at the perimeter of the array is not suucient to guarantee routability of the design. We analyze the Even Wiring Distribution (EWD) routing heuristic and show that it produces designs whose criti...
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Context. The Na x X-ray lines between 10.9 and 11.2 Å have attracted little attention but are of interest since they enable an estimate of the coronal abundance of Na to be made. This is of great interest in the continuing debate on the nature of the FIP (first ionization potential) effect. Aims. Observations of the Na x lines with the Solar Maximum Mission Flat Crystal Spectrometer and a rocke...
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The Galileo spacecraft has detected diffuse optical emissions from Io in high-resolution images acquired while the satellite was eclipsed by Jupiter. Three distinct components make up Io's visible emissions. Bright blue glows of more than 300 kilorayleighs emanate from volcanic plumes, probably due to electron impact on molecular sulfur dioxide. Weaker red emissions, possibly due to atomic oxyg...
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Indistinguishability Obfuscation (iO) has enabled an incredible number of new and exciting applications. However, our understanding of how to actually build secure iO remains in its infancy. While many candidate constructions have been published, some have been broken, and it is unclear which of the remaining candidates are secure. This work deals with the following basic question: Can we hedge...
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ژورنال
عنوان ژورنال: The Astrophysical Journal
سال: 1974
ISSN: 0004-637X,1538-4357
DOI: 10.1086/181414