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This review paper is a survey of infrared astronomy up to early 1969. The techniques and photometric standards are mentioned briefly, and results cover solar, lunar, and planetary observations. Point sources and extended sources both within and beyond the Galaxy are included, ending with the problem of cosmic background radiation. It is concluded that great progress will be possible when large infrared telescopes are placed above the atmosphere in orbit for extended periods of time.This work was conducted under the McDonnell Douglas Corporation Independent Research and Development Program. 相似文献
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R. A. Frahm J. R. Sharber J. D. Winningham P. Wurz M. W. Liemohn E. Kallio M. Yamauchi R. Lundin S. Barabash A. J. Coates D. R. Linder J. U. Kozyra M. Holmström S. J. Jeffers H. Andersson S. Mckenna-Lawler 《Space Science Reviews》2006,126(1-4):389-402
By identifying peaks in the photoelectron spectrum produced by photoionization of CO2 in the Martian atmosphere, we have conducted a pilot study to determine the locations of these photoelectrons in the space
around Mars. The significant result of this study is that these photoelectrons populate a region around Mars bounded externally
by the magnetic pileup boundary, and internally by the lowest altitude of our measurements (∼250 km) on the dayside and by
a cylinder of approximately the planetary radius on the nightside. It is particularly noteworthy that the photoelectrons on
the nightside are observed from the terminator plane tailward to a distance of ∼3 R
M, the Mars Express apoapsis. The presence of the atmospherically generated photoelectrons on the nightside of Mars may be
explained by direct magnetic field line connection between the nightside observation locations and the Martian dayside ionosphere.
Thus the characteristic photoelectron peaks may be used as tracers of magnetic field lines for the study of the magnetic field
configuration and particle transport in the Martian environment. 相似文献
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